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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Bettler%2C+M&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Bettler%2C+M&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Bettler%2C+M&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> <li> <a href="/search/?searchtype=author&query=Bettler%2C+M&start=100" class="pagination-link " aria-label="Page 3" aria-current="page">3 </a> </li> <li> <a href="/search/?searchtype=author&query=Bettler%2C+M&start=150" class="pagination-link " aria-label="Page 4" aria-current="page">4 </a> </li> <li> <a 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aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First measurement of the $CP$-violating phase in $B^0_s\to J/蠄(\to e^+e^-)蠁$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (940 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2105.14738v3-abstract-short" style="display: inline;"> A flavour-tagged time-dependent angular analysis of $B^0_s\to J/蠄蠁$ decays is presented where the $J/蠄$ meson is reconstructed through its decay to an $e^+e^-$ pair. The analysis uses a sample of $pp$ collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$. The $CP$-violating phase and lifetime parameters… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2105.14738v3-abstract-full').style.display = 'inline'; document.getElementById('2105.14738v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2105.14738v3-abstract-full" style="display: none;"> A flavour-tagged time-dependent angular analysis of $B^0_s\to J/蠄蠁$ decays is presented where the $J/蠄$ meson is reconstructed through its decay to an $e^+e^-$ pair. The analysis uses a sample of $pp$ collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$. The $CP$-violating phase and lifetime parameters of the $B^0_s$ system are measured to be $蠁_s=0.00\pm0.28\pm0.07$ rad, $螖螕_s=0.115\pm0.045\pm0.011$ ps$^{-1}$ and $螕_s=0.608\pm0.018\pm0.012$ ps$^{-1}$ where the first uncertainty is statistical and the second systematic. This is the first time that $CP$-violating parameters are measured in the $B^0_s\to J/蠄蠁$ decay with an $e^+e^-$ pair in the final state. The results are consistent with previous measurements in other channels and with the Standard Model predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2105.14738v3-abstract-full').style.display = 'none'; document.getElementById('2105.14738v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 May, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-042.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-042, CERN-EP-2021-064 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C (2021) 81: 1026 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2104.04759">arXiv:2104.04759</a> <span> [<a href="https://arxiv.org/pdf/2104.04759">pdf</a>, <a href="https://arxiv.org/format/2104.04759">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1674-1137/ac0c70">10.1088/1674-1137/ac0c70 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the doubly heavy baryons $\it惟_{bc}^{\rm0}$ and $\it螢_{bc}^{\rm0}$ decaying to $\it{螞_{c}^{+}蟺^{-}}$ and $\it{螢_{c}^{+}蟺^{-}}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (882 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2104.04759v3-abstract-short" style="display: inline;"> The first search for the doubly heavy $\it惟_{bc}^{\rm0}$ baryon and a search for $\it螢_{bc}^{\rm0}$ baryon are performed using $pp$ collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of $13TeV$, corresponding to an integrated luminosity of 5.2$fb^{-1}$. The baryons are reconstructed via their decays to $\it{螞_{c}^{+}蟺^{-}}$ and $\it{螢_{c}^{+}蟺^{-}}$. No s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.04759v3-abstract-full').style.display = 'inline'; document.getElementById('2104.04759v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.04759v3-abstract-full" style="display: none;"> The first search for the doubly heavy $\it惟_{bc}^{\rm0}$ baryon and a search for $\it螢_{bc}^{\rm0}$ baryon are performed using $pp$ collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of $13TeV$, corresponding to an integrated luminosity of 5.2$fb^{-1}$. The baryons are reconstructed via their decays to $\it{螞_{c}^{+}蟺^{-}}$ and $\it{螢_{c}^{+}蟺^{-}}$. No significant excess is found for invariant masses between 6700 and 7300$MeV/c^2$, in a rapidity range from 2.0 to 4.5 and a transverse momentum range from 2 to 20$GeV/c$. Upper limits are set on the ratio of the $\it惟_{bc}^{\rm0}$ and $\it螢_{bc}^{\rm0}$ production cross-section times the branching fraction to $\it{螞_{c}^{+}蟺^{-}}$ ($\it{螢_{c}^{+}蟺^{-}}$) relative to that of the $\it{螞_b^{\rm0}}$ ($\it{螢_b^{\rm0}}$) baryon, for different lifetime hypotheses, at $95\%$ confidence level. The upper limits range from $0.5\times10^{-4}$ to $2.5\times10^{-4}$ for the $\it惟_{bc}^{\rm0}\rightarrow\it{螞_{c}^{+}蟺^{-}}$ ($\it螢_{bc}^{\rm0}\rightarrow\it{螞_{c}^{+}蟺^{-}}$) decay, and from $1.4\times10^{-3}$ to $6.9\times10^{-3}$ for the $\it惟_{bc}^{\rm0}\rightarrow\it{螢_{c}^{+}蟺^{-}}$ ($\it螢_{bc}^{\rm0}\rightarrow\it{螢_{c}^{+}蟺^{-}}$) decay, depending on the considered mass and lifetime of the $\it惟_{bc}^{\rm0}$ ($\it螢_{bc}^{\rm0}$) baryon. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.04759v3-abstract-full').style.display = 'none'; document.getElementById('2104.04759v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-002.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2021-002, CERN-EP-2021-046 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Chin. Phys. C 45 (2021) 093002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2012.11341">arXiv:2012.11341</a> <span> [<a href="https://arxiv.org/pdf/2012.11341">pdf</a>, <a href="https://arxiv.org/format/2012.11341">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP03(2021)099">10.1007/JHEP03(2021)099 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of the $B_s^0 \rightarrow D^{\ast \pm} D^{\mp}$ decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (949 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2012.11341v2-abstract-short" style="display: inline;"> A search for the $B^0_s \!\rightarrow D^{*\pm} D^\mp$ decay is performed using proton-proton collision data at centre-of-mass energies of $7$, $8$ and $13\,\text{TeV}$ collected by the LHCb experiment, corresponding to an integrated luminosity of $9\,\text{fb}^{-1}$. The decay is observed with a high significance and its branching fraction relative to the $B^0 \!\rightarrow D^{*\pm} D^\mp$ decay i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.11341v2-abstract-full').style.display = 'inline'; document.getElementById('2012.11341v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2012.11341v2-abstract-full" style="display: none;"> A search for the $B^0_s \!\rightarrow D^{*\pm} D^\mp$ decay is performed using proton-proton collision data at centre-of-mass energies of $7$, $8$ and $13\,\text{TeV}$ collected by the LHCb experiment, corresponding to an integrated luminosity of $9\,\text{fb}^{-1}$. The decay is observed with a high significance and its branching fraction relative to the $B^0 \!\rightarrow D^{*\pm} D^\mp$ decay is measured to be \begin{align*} \frac{\mathcal{B}(B_s^0 \rightarrow D^{\ast \pm} D^{\mp}) }{\mathcal{B}(B^0 \rightarrow D^{\ast \pm} D^{\mp}) } = 0.137 \pm 0.017 \pm 0.002 \pm 0.006 \,, \end{align*} where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the $B_s^0$ and $B^0$ hadronisation fractions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.11341v2-abstract-full').style.display = 'none'; document.getElementById('2012.11341v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-037.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-037, CERN-EP-2020-230 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of High Energy Physics, 03 (2021) 099 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2012.05319">arXiv:2012.05319</a> <span> [<a href="https://arxiv.org/pdf/2012.05319">pdf</a>, <a href="https://arxiv.org/format/2012.05319">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP03(2021)075">10.1007/JHEP03(2021)075 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of $CP$ violation in two-body $B_{(\mathrm{s})}^{\,0}$-meson decays to charged pions and kaons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (952 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2012.05319v2-abstract-short" style="display: inline;"> The time-dependent $CP$ asymmetries of $B^0\to 蟺^+蟺^-$ and $B^0_\mathrm{s}\!\to K^+K^-$ decays are measured using a data sample of $pp$ collisions corresponding to an integrated luminosity of 1.9 fb$^{-1}$, collected with the LHCb detector at a centre-of-mass energy of 13 TeV. The results are \begin{eqnarray*} C_{蟺蟺} & = & -0.311 \pm 0.045 \pm 0.015, \\ S_{蟺蟺} & = & -0.706 \pm 0.042 \pm 0.013, \\… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.05319v2-abstract-full').style.display = 'inline'; document.getElementById('2012.05319v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2012.05319v2-abstract-full" style="display: none;"> The time-dependent $CP$ asymmetries of $B^0\to 蟺^+蟺^-$ and $B^0_\mathrm{s}\!\to K^+K^-$ decays are measured using a data sample of $pp$ collisions corresponding to an integrated luminosity of 1.9 fb$^{-1}$, collected with the LHCb detector at a centre-of-mass energy of 13 TeV. The results are \begin{eqnarray*} C_{蟺蟺} & = & -0.311 \pm 0.045 \pm 0.015, \\ S_{蟺蟺} & = & -0.706 \pm 0.042 \pm 0.013, \\ C_{KK} & = & \phantom{-}0.164 \pm 0.034 \pm 0.014, \\ S_{KK} & = & \phantom{-}0.123 \pm 0.034 \pm 0.015, \\ \cal {A}^{\mathrm{螖螕}}_{\mathit{KK}} & = & -0.83\phantom{0} \pm 0.05\phantom{0} \pm 0.09, \end{eqnarray*} where the first uncertainties are statistical and the second systematic. The same data sample is used to measure the time-integrated $CP$ asymmetries of $B^0\to K^+蟺^-$ and $B^0_\mathrm{s}\to K^-蟺^+$ decays and the results are \begin{eqnarray*} A_{CP}^{B^0} & = & -0.0824 \pm 0.0033 \pm 0.0033, \\ A_{CP}^{B^0_\mathrm{s}} & = & \phantom{-}0.236\phantom{0} \pm 0.013\phantom{0} \pm 0.011. \end{eqnarray*} All results are consistent with earlier measurements. A combination of LHCb measurements provides the first observation of time-dependent $CP$ violation in $B^0_\mathrm{s}$ decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.05319v2-abstract-full').style.display = 'none'; document.getElementById('2012.05319v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-029.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-029, CERN-EP-2020-215 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 03 (2021) 075 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2012.05143">arXiv:2012.05143</a> <span> [<a href="https://arxiv.org/pdf/2012.05143">pdf</a>, <a href="https://arxiv.org/format/2012.05143">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.126.081804">10.1103/PhysRevLett.126.081804 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First observation of the decay $B_s^0 \to K^-渭^+谓_渭$ and a measurement of $|V_{ub}|/|V_{cb}|$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (947 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2012.05143v2-abstract-short" style="display: inline;"> The first observation of the suppressed semileptonic $B_s^0 \to K^-渭^+谓_渭$ decay is reported. Using a data sample recorded in {\it pp} collisions in 2012 with the LHCb detector, corresponding to an integrated luminosity of 2 $\mathrm{fb}^{-1}$, the branching fraction \mbox{$\mathcal{B}(B_s^0 \to K^-渭^+谓_渭)$} is measured to be $(1.06\pm0.05~(\mathrm{stat})\pm0.08~(\mathrm{syst}))\times 10^{-4}$, wh… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.05143v2-abstract-full').style.display = 'inline'; document.getElementById('2012.05143v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2012.05143v2-abstract-full" style="display: none;"> The first observation of the suppressed semileptonic $B_s^0 \to K^-渭^+谓_渭$ decay is reported. Using a data sample recorded in {\it pp} collisions in 2012 with the LHCb detector, corresponding to an integrated luminosity of 2 $\mathrm{fb}^{-1}$, the branching fraction \mbox{$\mathcal{B}(B_s^0 \to K^-渭^+谓_渭)$} is measured to be $(1.06\pm0.05~(\mathrm{stat})\pm0.08~(\mathrm{syst}))\times 10^{-4}$, where the first uncertainty is statistical and the second one represents the combined systematic uncertainties. The decay $B_s^0 \to D_s^-渭^+谓_渭$, where $D_s^-$ is reconstructed in the final state $K^+K^-蟺^-$, is used as a normalization channel to minimize the experimental systematic uncertainty. Theoretical calculations on the form factors of the $B_s^0 \to K^-$ and $B_s^0 \to D_s^-$ transitions are employed to determine the ratio of the CKM matrix elements ${|V_{ub}|}/{|V_{cb}|}$ at low and high $B_s^0 \to K^-$ momentum transfer. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.05143v2-abstract-full').style.display = 'none'; document.getElementById('2012.05143v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Phys.Rev.Lett. All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-038.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-038, CERN-EP-2020-224 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 126, 081804 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2012.02696">arXiv:2012.02696</a> <span> [<a href="https://arxiv.org/pdf/2012.02696">pdf</a>, <a href="https://arxiv.org/format/2012.02696">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-021-08994-0">10.1140/epjc/s10052-021-08994-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for long-lived particles decaying to $e^\pm 渭^\mp 谓$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (961 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2012.02696v2-abstract-short" style="display: inline;"> Long-lived particles decaying to $e^\pm 渭^\mp 谓$, with masses between 7 and $50$ GeV/c$^2$ and lifetimes between 2 and $50$ ps, are searched for by looking at displaced vertices containing electrons and muons of opposite charges. The search is performed using $5.4$ fb$^{-1}$ of $pp$ collisions collected with the LHCb detector at a centre-of-mass energy of $\sqrt{s} = 13$ TeV. Three mechanisms of p… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.02696v2-abstract-full').style.display = 'inline'; document.getElementById('2012.02696v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2012.02696v2-abstract-full" style="display: none;"> Long-lived particles decaying to $e^\pm 渭^\mp 谓$, with masses between 7 and $50$ GeV/c$^2$ and lifetimes between 2 and $50$ ps, are searched for by looking at displaced vertices containing electrons and muons of opposite charges. The search is performed using $5.4$ fb$^{-1}$ of $pp$ collisions collected with the LHCb detector at a centre-of-mass energy of $\sqrt{s} = 13$ TeV. Three mechanisms of production of long-lived particles are considered: the direct pair production from quark interactions, the pair production from the decay of a Standard-Model-like Higgs boson with a mass of $125$ GeV/c$^2$, and the charged current production from an on-shell $W$ boson with an additional lepton. No evidence of these long-lived states is obtained and upper limits on the production cross-section times branching fraction are set on the different production modes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.02696v2-abstract-full').style.display = 'none'; document.getElementById('2012.02696v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-027.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-027, CERN-EP-2020-212 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C 81, 261 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.13738">arXiv:2011.13738</a> <span> [<a href="https://arxiv.org/pdf/2011.13738">pdf</a>, <a href="https://arxiv.org/format/2011.13738">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2021.136172">10.1016/j.physletb.2021.136172 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of the $\varLambda^0_b \to \varLambda^+_c K^+ K^- 蟺^-$ decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (961 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.13738v2-abstract-short" style="display: inline;"> The $\varLambda^0_b \to \varLambda^+_c K^+ K^- 蟺^-$ decay is observed for the first time using a data sample of proton-proton collisions at centre-of-mass energies of $\sqrt{s}=7$ and 8 $\rm{TeV}$ collected by the $\mbox{LHCb}$ detector, corresponding to an integrated luminosity of $3{\rm{fb}^{-1}}$. The ratio of branching fractions between the $\varLambda^0_b \to \varLambda^+_c K^+ K^- 蟺^-$ and t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.13738v2-abstract-full').style.display = 'inline'; document.getElementById('2011.13738v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.13738v2-abstract-full" style="display: none;"> The $\varLambda^0_b \to \varLambda^+_c K^+ K^- 蟺^-$ decay is observed for the first time using a data sample of proton-proton collisions at centre-of-mass energies of $\sqrt{s}=7$ and 8 $\rm{TeV}$ collected by the $\mbox{LHCb}$ detector, corresponding to an integrated luminosity of $3{\rm{fb}^{-1}}$. The ratio of branching fractions between the $\varLambda^0_b \to \varLambda^+_c K^+ K^- 蟺^-$ and the $\varLambda^{0}_{b}\to\varLambda^{+}_{c}D^{-}_{s}$ decays is measured to be \begin{equation*} \frac{\mathcal{B} ( \varLambda^0_b \to \varLambda^+_c K^+ K^- 蟺^-) } {\mathcal{B} ( \varLambda^0_b \to \varLambda^+_c D^-_s)} = (9.26 \pm 0.29 \pm 0.46 \pm 0.26)\times10^{-2}, \end{equation*} where the first uncertainty is statistical, the second systematic and the third is due to the knowledge of the $D^-_s \to K^+ K^- 蟺^-$ branching fraction. No structure on the invariant mass distribution of the $\varLambda^+_c K^+$ system is found, consistent with no open-charm pentaquark signature. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.13738v2-abstract-full').style.display = 'none'; document.getElementById('2011.13738v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-028.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-028, CERN-EP-2020-209 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B 815 (2021) 136172 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.12041">arXiv:2011.12041</a> <span> [<a href="https://arxiv.org/pdf/2011.12041">pdf</a>, <a href="https://arxiv.org/format/2011.12041">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP03(2021)137">10.1007/JHEP03(2021)137 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the CKM angle $纬$ and $B^0_s$-$\bar{B}^0_s$ mixing frequency with $B^0_s \rightarrow D_s^\mp h^\pm 蟺^\pm 蟺^\mp$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (949 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.12041v2-abstract-short" style="display: inline;"> The CKM angle $纬$ is measured for the first time from mixing-induced $CP$ violation between $B^0_s \rightarrow D_s^\mp K^\pm 蟺^\pm 蟺^\mp$ and $\bar{B}^0_s \rightarrow D_s^\pm K^\mp 蟺^\mp 蟺^\pm$ decays reconstructed in proton-proton collision data corresponding to an integrated luminosity of 9 ${\rm fb}^{-1}$ recorded with the LHCb detector. A time-dependent amplitude analysis is performed to extra… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.12041v2-abstract-full').style.display = 'inline'; document.getElementById('2011.12041v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.12041v2-abstract-full" style="display: none;"> The CKM angle $纬$ is measured for the first time from mixing-induced $CP$ violation between $B^0_s \rightarrow D_s^\mp K^\pm 蟺^\pm 蟺^\mp$ and $\bar{B}^0_s \rightarrow D_s^\pm K^\mp 蟺^\mp 蟺^\pm$ decays reconstructed in proton-proton collision data corresponding to an integrated luminosity of 9 ${\rm fb}^{-1}$ recorded with the LHCb detector. A time-dependent amplitude analysis is performed to extract the $CP$-violating weak phase $纬-2尾_s$ and, subsequently, $纬$ by taking the $B^0_s$-$\bar{B}^0_s$ mixing phase $尾_{s}$ as an external input. The measurement yields $纬= (44 \pm 12)^\circ$ modulo $180^\circ$, where statistical and systematic uncertainties are combined. An alternative model-independent measurement, integrating over the five-dimensional phase space of the decay, yields $纬= (44^{\,+\,20}_{\,-\,13})^\circ$ modulo $180^\circ$. Moreover, the $B^0_s$-$\bar{B}^0_s$ oscillation frequency is measured from the flavour-specific control channel $B^0_s \rightarrow D_s^- 蟺^+ 蟺^+ 蟺^-$ to be $螖m_s = (17.757 \pm 0.007 \,({\rm stat.}) \pm 0.008 \,({\rm syst.})) \text{ps}^{-1}$, consistent with and more precise than the current world-average value. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.12041v2-abstract-full').style.display = 'none'; document.getElementById('2011.12041v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-030.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-030, CERN-EP-2020-214 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 03 (2021) 137 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.09112">arXiv:2011.09112</a> <span> [<a href="https://arxiv.org/pdf/2011.09112">pdf</a>, <a href="https://arxiv.org/format/2011.09112">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.126.122002">10.1103/PhysRevLett.126.122002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a new excited $D_s^+$ meson in $B^0\to D^-D^+K^+蟺^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (947 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.09112v2-abstract-short" style="display: inline;"> Using $pp$ collision data corresponding to an integrated luminosity of $5.4\,{\rm fb}^{-1}$ collected with the LHCb detector at a center-of-mass energy of $13\,{\rm TeV}$, the $B^0\to D^-D^+K^+蟺^-$ decay is studied. A new excited $D_s^+$ meson is observed decaying into the $D^+K^+蟺^-$ final state with large statistical significance. The pole mass and width, and the spin-parity of the new state are… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.09112v2-abstract-full').style.display = 'inline'; document.getElementById('2011.09112v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.09112v2-abstract-full" style="display: none;"> Using $pp$ collision data corresponding to an integrated luminosity of $5.4\,{\rm fb}^{-1}$ collected with the LHCb detector at a center-of-mass energy of $13\,{\rm TeV}$, the $B^0\to D^-D^+K^+蟺^-$ decay is studied. A new excited $D_s^+$ meson is observed decaying into the $D^+K^+蟺^-$ final state with large statistical significance. The pole mass and width, and the spin-parity of the new state are measured with an amplitude analysis to be $m_R=2591\pm6\pm7\,{\rm MeV}$, $螕_R=89\pm16\pm12\,{\rm MeV}$ and $J^P=0^-$, where the first uncertainty is statistical and the second systematic. Fit fractions for all components in the amplitude analysis are also reported. The new resonance, denoted as $D_{s0}(2590)^+$, is a strong candidate to be the $D_s(2^1{S}_0)^+$ state, the radial excitation of the pseudoscalar ground-state $D_s^+$ meson. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.09112v2-abstract-full').style.display = 'none'; document.getElementById('2011.09112v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-034.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2020-203, LHCb-PAPER-2020-034 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 126, 122002 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.06847">arXiv:2011.06847</a> <span> [<a href="https://arxiv.org/pdf/2011.06847">pdf</a>, <a href="https://arxiv.org/format/2011.06847">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1674-1137/abdf40">10.1088/1674-1137/abdf40 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the rare decay $B^0 \rightarrow J/蠄蠁$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (948 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.06847v2-abstract-short" style="display: inline;"> A search for the rare decay $B^0 \rightarrow J/蠄蠁$ is performed using $pp$ collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 ${\rm fb}^{-1}$. No significant signal of the decay is observed and an upper limit of $1.1 \times 10^{-7}$ at 90% confidence level is set on the branching fraction. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.06847v2-abstract-full" style="display: none;"> A search for the rare decay $B^0 \rightarrow J/蠄蠁$ is performed using $pp$ collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 ${\rm fb}^{-1}$. No significant signal of the decay is observed and an upper limit of $1.1 \times 10^{-7}$ at 90% confidence level is set on the branching fraction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.06847v2-abstract-full').style.display = 'none'; document.getElementById('2011.06847v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-033.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-033, CERN-EP-2020-204 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Chin. Phys. C45 (2021) 043001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.05263">arXiv:2011.05263</a> <span> [<a href="https://arxiv.org/pdf/2011.05263">pdf</a>, <a href="https://arxiv.org/format/2011.05263">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-021-08973-5">10.1140/epjc/s10052-021-08973-5 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for heavy neutral leptons in $W^+\to渭^{+}渭^{\pm}\text{jet}$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (966 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.05263v2-abstract-short" style="display: inline;"> A search is performed for heavy neutrinos in the decay of a $W$ boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately $3.0 \text{ fb}^{-1}$ of proton-proton collision data at centre-of-mass energies of 7 and $8 \text{ TeV}$ collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.05263v2-abstract-full').style.display = 'inline'; document.getElementById('2011.05263v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.05263v2-abstract-full" style="display: none;"> A search is performed for heavy neutrinos in the decay of a $W$ boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately $3.0 \text{ fb}^{-1}$ of proton-proton collision data at centre-of-mass energies of 7 and $8 \text{ TeV}$ collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at $95\%$ confidence level in the heavy-neutrino mass range from 5 to $50 \text{ GeV}/c^2$. These are of the order of $10^{-3}$ for lepton-number-conserving decays and of the order of $10^{-4}$ for lepton-number-violating heavy-neutrino decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.05263v2-abstract-full').style.display = 'none'; document.getElementById('2011.05263v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-022.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-022, CERN-EP-2020-194 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C 81 (2021) 248 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.01867">arXiv:2011.01867</a> <span> [<a href="https://arxiv.org/pdf/2011.01867">pdf</a>, <a href="https://arxiv.org/format/2011.01867">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP02(2021)024">10.1007/JHEP02(2021)024 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of $B^0_s \rightarrow J/蠄蟺^+蟺^-K^+K^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (944 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.01867v3-abstract-short" style="display: inline;"> The decays $B^0_s \rightarrow J/蠄蟺^+蟺^- K^+ K^-$ are studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13TeV. The decays $B^0_s \rightarrow J/蠄K^{\ast0} \bar{K}^{\ast0}$ and $B^0_s \rightarrow 蠂_{c1}(3872)K^+K^-$, where the $K^+K^-$ pair does not originate from a $蠁$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.01867v3-abstract-full').style.display = 'inline'; document.getElementById('2011.01867v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.01867v3-abstract-full" style="display: none;"> The decays $B^0_s \rightarrow J/蠄蟺^+蟺^- K^+ K^-$ are studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13TeV. The decays $B^0_s \rightarrow J/蠄K^{\ast0} \bar{K}^{\ast0}$ and $B^0_s \rightarrow 蠂_{c1}(3872)K^+K^-$, where the $K^+K^-$ pair does not originate from a $蠁$ meson, are observed for the first time. Precise measurements of the ratios of branching fractions between intermediate $蠂_{c1}(3872)蠁$, $J/蠄K^{\ast0}\bar{K}^{\ast0}$, $蠄(2S)蠁$ and $蠂_{c1}(3872)K^+K^-$ states are reported. A structure, denoted as $X(4740)$, is observed in the $J/蠄蠁$ mass spectrum and, assuming a Breit-Wigner parameterisation, its mass and width are determined to be \begin{eqnarray*} m_{X(4740)} & = & 4741 \pm 6 \pm 6\,{\mathrm{MeV}}/c^2 \,, \\ 螕_{X(4740)} & = & 53 \pm 15 \pm 11\,{\mathrm{MeV}} \,, \end{eqnarray*} where the first uncertainty is statistical and the second is systematic. In addition, the most precise single measurement of the mass of the $B^0_s$ meson is performed and gives a value of $$ m_{B^0_s} = 5366.98 \pm 0.07 \pm 0.13\,{\mathrm{MeV}}/c^2\,. $$ <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.01867v3-abstract-full').style.display = 'none'; document.getElementById('2011.01867v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">32 pages, 10 figures; All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-035.html (LHCb public pages)"</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-35, CERN-EP-2020-192 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 02 (2021) 024 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.00217">arXiv:2011.00217</a> <span> [<a href="https://arxiv.org/pdf/2011.00217">pdf</a>, <a href="https://arxiv.org/format/2011.00217">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP06(2021)044">10.1007/JHEP06(2021)044 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searches for 25 rare and forbidden decays of $D^+$ and $D_s^+$ mesons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a> , et al. (983 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.00217v1-abstract-short" style="display: inline;"> A search is performed for rare and forbidden charm decays of the form $D_{(s)}^+ \to h^\pm \ell^+ \ell^{(\prime)\mp}$, where $h^\pm$ is a pion or kaon and $\ell^{(')\pm}$ is an electron or muon. The measurements are performed using proton-proton collision data, corresponding to an integrated luminosity of $1.6\text{fb}^{-1}$, collected by the LHCb experiment in 2016. No evidence is observed for th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.00217v1-abstract-full').style.display = 'inline'; document.getElementById('2011.00217v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.00217v1-abstract-full" style="display: none;"> A search is performed for rare and forbidden charm decays of the form $D_{(s)}^+ \to h^\pm \ell^+ \ell^{(\prime)\mp}$, where $h^\pm$ is a pion or kaon and $\ell^{(')\pm}$ is an electron or muon. The measurements are performed using proton-proton collision data, corresponding to an integrated luminosity of $1.6\text{fb}^{-1}$, collected by the LHCb experiment in 2016. No evidence is observed for the 25 decay modes that are investigated and $90\%$ confidence level limits on the branching fractions are set between $1.4\times10^{-8}$ and $6.4\times10^{-6}$. In most cases, these results represent an improvement on existing limits by one to two orders of magnitude. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.00217v1-abstract-full').style.display = 'none'; document.getElementById('2011.00217v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-007.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-007, CERN-EP-2020-140 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.15931">arXiv:2010.15931</a> <span> [<a href="https://arxiv.org/pdf/2010.15931">pdf</a>, <a href="https://arxiv.org/format/2010.15931">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-021-09305-3">10.1140/epjc/s10052-021-09305-3 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of new excited $B_s^0$ states </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (958 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2010.15931v2-abstract-short" style="display: inline;"> A structure is observed in the $B^+K^-$ mass spectrum in a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb${}^-1$. The structure is interpreted as the result of overlapping excited $B_s^0$ states. With high significance, a two-peak hypothesis provides a better description… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.15931v2-abstract-full').style.display = 'inline'; document.getElementById('2010.15931v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.15931v2-abstract-full" style="display: none;"> A structure is observed in the $B^+K^-$ mass spectrum in a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb${}^-1$. The structure is interpreted as the result of overlapping excited $B_s^0$ states. With high significance, a two-peak hypothesis provides a better description of the data than a single resonance. Under this hypothesis the masses and widths of the two states, assuming they decay directly to $B^+K^-$, are determined to be $m_1 = 6063.5 \pm 1.2 \text{ (stat)} \pm 0.8\text{ (syst) MeV},$ $螕_1 = 26 \pm 4 \text{ (stat)} \pm 4\text{ (syst) MeV},$ $m_2 = 6114 \pm 3 \text{ (stat)} \pm 5\text{ (syst) MeV},$ $螕_2 = 66 \pm 18 \text{ (stat)} \pm 21\text{ (syst) MeV}.$ Alternative values assuming a decay through $B^{*+}K^-$, with a missing photon from the $B^{*+} \rightarrow B^+纬$ decay, which are shifted by approximately 45 MeV are also determined. The possibility of a single state decaying in both channels is also considered. The ratio of the total production cross-section times branching fraction of the new states relative to the previously observed $B_{s2}^{*0}$ state is determined to be $0.87 \pm 0.15 \text{ (stat)} \pm 0.19 \text{ (syst)}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.15931v2-abstract-full').style.display = 'none'; document.getElementById('2010.15931v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-026.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-026, CERN-EP-2020-185 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C81 (2021) 601 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.14485">arXiv:2010.14485</a> <span> [<a href="https://arxiv.org/pdf/2010.14485">pdf</a>, <a href="https://arxiv.org/format/2010.14485">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.103.012004">10.1103/PhysRevD.103.012004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a new $螢_b^0$ state </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (943 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2010.14485v2-abstract-short" style="display: inline;"> Using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 8.5 fb$^{-1}$, the observation of a new excited $螢_b^0$ resonance decaying to the $螢_b^-蟺^+$ final state is presented. The state, referred to as $螢_b(6227)^0$, has a measured mass and natural width of $m(螢_b(6227)^0) = 6227.1^{\,+1.4}_{\,-1.5}\pm0.5$ MeV,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.14485v2-abstract-full').style.display = 'inline'; document.getElementById('2010.14485v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.14485v2-abstract-full" style="display: none;"> Using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 8.5 fb$^{-1}$, the observation of a new excited $螢_b^0$ resonance decaying to the $螢_b^-蟺^+$ final state is presented. The state, referred to as $螢_b(6227)^0$, has a measured mass and natural width of $m(螢_b(6227)^0) = 6227.1^{\,+1.4}_{\,-1.5}\pm0.5$ MeV, $螕(螢_b(6227)^0) = 18.6^{\,+5.0}_{\,-4.1}\pm1.4$ MeV, where the uncertainties are statistical and systematic. The production rate of the $螢_b(6227)^0$ state relative to that of the $螢_b^-$ baryon in the kinematic region $2<畏<5$ and $p_{\rm T}<30$ GeV is measured to be $\frac{f_{螢_b(6227)^0}}{f_{螢_b^-}}{\mathcal{B}}(螢_b(6227)^0\to螢_b^-蟺^+) = 0.045\pm0.008\pm0.004$, where ${\mathcal{B}}(螢_b(6227)^0\to螢_b^-蟺^+)$ is the branching fraction of the decay, and $f_{螢_b(6227)^0}$ and $f_{螢_b^-}$ represent fragmentation fractions. Improved measurements of the mass and natural width of the previously observed $螢_b(6227)^-$ state, along with the mass of the $螢_b^-$ baryon, are also reported. Both measurements are significantly more precise than, and consistent with, previously reported values. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.14485v2-abstract-full').style.display = 'none'; document.getElementById('2010.14485v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 5 figures. All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-032.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-032, CERN-EP-2020-190 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 103, 012004 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.11802">arXiv:2010.11802</a> <span> [<a href="https://arxiv.org/pdf/2010.11802">pdf</a>, <a href="https://arxiv.org/format/2010.11802">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.112010">10.1103/PhysRevD.102.112010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the relative branching fractions of $B^+ \to h^+h^{\prime +}h^{\prime -}$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (943 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2010.11802v2-abstract-short" style="display: inline;"> The relative branching fractions of $B^+ \to h^+h^{\prime +}h^{\prime -}$ decays, where $h^{(\prime)}$ is a pion or kaon, are measured. The analysis is performed with a data sample, collected with the LHCb detector, corresponding to an integrated luminosity of $3.0 {\rm fb}^{-1}$ of $pp$ collisions. The results obtained improve significantly on previous measurements of these quantities, and are im… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.11802v2-abstract-full').style.display = 'inline'; document.getElementById('2010.11802v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.11802v2-abstract-full" style="display: none;"> The relative branching fractions of $B^+ \to h^+h^{\prime +}h^{\prime -}$ decays, where $h^{(\prime)}$ is a pion or kaon, are measured. The analysis is performed with a data sample, collected with the LHCb detector, corresponding to an integrated luminosity of $3.0 {\rm fb}^{-1}$ of $pp$ collisions. The results obtained improve significantly on previous measurements of these quantities, and are important for the interpretation of Dalitz plot analyses of three-body charmless hadronic decays of $B^+$ mesons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.11802v2-abstract-full').style.display = 'none'; document.getElementById('2010.11802v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-031.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2020-189, LHCb-PAPER-2020-031 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 112010 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.09437">arXiv:2010.09437</a> <span> [<a href="https://arxiv.org/pdf/2010.09437">pdf</a>, <a href="https://arxiv.org/format/2010.09437">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP02(2021)023">10.1007/JHEP02(2021)023 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of differential $b\bar{b}$- and $c\bar{c}$-dijet cross-sections in the forward region of $pp$ collisions at $\sqrt{s}=13 ~ \mathrm{TeV}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (961 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2010.09437v2-abstract-short" style="display: inline;"> The inclusive $b \bar{b}$- and $c \bar{c}$-dijet production cross-sections in the forward region of $pp$ collisions are measured using a data sample collected with the LHCb detector at a centre-of-mass energy of 13 TeV in 2016. The data sample corresponds to an integrated luminosity of 1.6 fb$^{-1}$. Differential cross-sections are measured as a function of the transverse momentum and of the pseud… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.09437v2-abstract-full').style.display = 'inline'; document.getElementById('2010.09437v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.09437v2-abstract-full" style="display: none;"> The inclusive $b \bar{b}$- and $c \bar{c}$-dijet production cross-sections in the forward region of $pp$ collisions are measured using a data sample collected with the LHCb detector at a centre-of-mass energy of 13 TeV in 2016. The data sample corresponds to an integrated luminosity of 1.6 fb$^{-1}$. Differential cross-sections are measured as a function of the transverse momentum and of the pseudorapidity of the leading jet, of the rapidity difference between the jets, and of the dijet invariant mass. A fiducial region for the measurement is defined by requiring that the two jets originating from the two $b$ or $c$ quarks are emitted with transverse momentum greater than 20 GeV$/c$, pseudorapidity in the range $2.2 < 畏< 4.2$, and with a difference in the azimuthal angle between the two jets greater than 1.5. The integrated $b \bar{b}$-dijet cross-section is measured to be $53.0 \pm 9.7$ nb, and the total $c \bar{c}$-dijet cross-section is measured to be $73 \pm 16$ nb. The ratio between $c \bar{c}$- and $b \bar{b}$-dijet cross-sections is also measured and found to be $1.37 \pm 0.27$. The results are in agreement with theoretical predictions at next-to-leading order. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.09437v2-abstract-full').style.display = 'none'; document.getElementById('2010.09437v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-018.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-018, CERN-EP-2020-174 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 02 (2021) 023 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.08483">arXiv:2010.08483</a> <span> [<a href="https://arxiv.org/pdf/2010.08483">pdf</a>, <a href="https://arxiv.org/format/2010.08483">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP02(2021)169">10.1007/JHEP02(2021)169 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the CKM angle $纬$ in $B^\pm\to D K^\pm$ and $B^\pm \to D 蟺^\pm$ decays with $D \to K_\mathrm S^0 h^+ h^-$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (961 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2010.08483v2-abstract-short" style="display: inline;"> A measurement of $CP$-violating observables is performed using the decays $B^\pm\to D K^\pm$ and $B^\pm\to D 蟺^\pm$, where the $D$ meson is reconstructed in one of the self-conjugate three-body final states $K_{\mathrm S}蟺^+蟺^-$ and $K_{\mathrm S}K^+K^-$ (commonly denoted $K_{\mathrm S} h^+h^-$). The decays are analysed in bins of the $D$-decay phase space, leading to a measurement that is indepen… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.08483v2-abstract-full').style.display = 'inline'; document.getElementById('2010.08483v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.08483v2-abstract-full" style="display: none;"> A measurement of $CP$-violating observables is performed using the decays $B^\pm\to D K^\pm$ and $B^\pm\to D 蟺^\pm$, where the $D$ meson is reconstructed in one of the self-conjugate three-body final states $K_{\mathrm S}蟺^+蟺^-$ and $K_{\mathrm S}K^+K^-$ (commonly denoted $K_{\mathrm S} h^+h^-$). The decays are analysed in bins of the $D$-decay phase space, leading to a measurement that is independent of the modelling of the $D$-decay amplitude. The observables are interpreted in terms of the CKM angle $纬$. Using a data sample corresponding to an integrated luminosity of $9\,\text{fb}^{-1}$ collected in proton-proton collisions at centre-of-mass energies of $7$, $8$, and $13\,\text{TeV}$ with the LHCb experiment, $纬$ is measured to be $\left(68.7^{+5.2}_{-5.1}\right)^\circ$. The hadronic parameters $r_B^{DK}$, $r_B^{D蟺}$, $未_B^{DK}$, and $未_B^{D蟺}$, which are the ratios and strong-phase differences of the suppressed and favoured $B^\pm$ decays, are also reported. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.08483v2-abstract-full').style.display = 'none'; document.getElementById('2010.08483v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-019.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-019, CERN-EP-2020-175 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. High Energ. Phys. 2021, 169 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.06011">arXiv:2010.06011</a> <span> [<a href="https://arxiv.org/pdf/2010.06011">pdf</a>, <a href="https://arxiv.org/format/2010.06011">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP12(2020)081">10.1007/JHEP12(2020)081 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Strong constraints on the $b \to s纬$ photon polarisation from $B^0 \to K^{*0} e^+ e^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (962 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2010.06011v2-abstract-short" style="display: inline;"> An angular analysis of the $B^0 \to K^{*0} e^+ e^-$ decay is performed using a data sample corresponding to an integrated luminosity of $9~{\rm fb}^{-1}$ of $pp$ collisions collected with the LHCb experiment. The analysis is conducted in the very low dielectron mass squared ($q^2$) interval between $0.0008$ and $0.257~{\rm GeV}^2$, where the rate is dominated by the $B^0\to K^{\ast 0}纬$ transition… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.06011v2-abstract-full').style.display = 'inline'; document.getElementById('2010.06011v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.06011v2-abstract-full" style="display: none;"> An angular analysis of the $B^0 \to K^{*0} e^+ e^-$ decay is performed using a data sample corresponding to an integrated luminosity of $9~{\rm fb}^{-1}$ of $pp$ collisions collected with the LHCb experiment. The analysis is conducted in the very low dielectron mass squared ($q^2$) interval between $0.0008$ and $0.257~{\rm GeV}^2$, where the rate is dominated by the $B^0\to K^{\ast 0}纬$ transition with a virtual photon. The fraction of longitudinal polarisation of the $K^{\ast 0}$ meson, $F_{\rm L}$, is measured to be $F_{\rm L} = (4.4 \pm 2.6 \pm 1.4)\%$, where the first uncertainty is statistical and the second systematic. The $A_{\rm T}^{\rm Re}$ observable, which is related to the lepton forward-backward asymmetry, is measured to be $A_{\rm T}^{\rm Re}=-0.06 \pm 0.08 \pm 0.02$. The $A_{\rm T}^{(2)}$ and $A_{\rm T}^{\rm Im}$ transverse asymmetries, which are sensitive to the virtual photon polarisation, are found to be $A_{\rm T}^{(2)} = 0.11 \pm 0.10 \ \pm 0.02$ and $A_{\rm T}^{\rm Im} = 0.02 \pm 0.10 \pm 0.01$. The results are consistent with Standard Model predictions and provide the world's best constraint on the $b\to s纬$ photon polarisation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.06011v2-abstract-full').style.display = 'none'; document.getElementById('2010.06011v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-020.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-020, CERN-EP-2020-176 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 12 (2020) 081 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2009.06619">arXiv:2009.06619</a> <span> [<a href="https://arxiv.org/pdf/2009.06619">pdf</a>, <a href="https://arxiv.org/format/2009.06619">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.126.092001">10.1103/PhysRevLett.126.092001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of multiplicity-dependent prompt $蠂_{c1}(3872)$ and $蠄(2S)$ production in $pp$ collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (953 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2009.06619v2-abstract-short" style="display: inline;"> The production of $蠂_{c1}(3872)$ and $蠄(2S)$ hadrons is studied as a function of charged particle multiplicity in $pp$ collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2 fb$^{-1}$. For both states, the fraction that is produced promptly at the collision vertex is found to decrease as charged particle multiplicity increases. The ratio of $蠂_{c1}(3872)$ to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.06619v2-abstract-full').style.display = 'inline'; document.getElementById('2009.06619v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2009.06619v2-abstract-full" style="display: none;"> The production of $蠂_{c1}(3872)$ and $蠄(2S)$ hadrons is studied as a function of charged particle multiplicity in $pp$ collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2 fb$^{-1}$. For both states, the fraction that is produced promptly at the collision vertex is found to decrease as charged particle multiplicity increases. The ratio of $蠂_{c1}(3872)$ to $蠄(2S)$ cross-sections for promptly produced particles is also found to decrease with multiplicity, while no significant dependence on multiplicity is observed for the equivalent ratio of particles produced away from the collision vertex in $b$-hadron decays. This behavior is consistent with a calculation that models the $蠂_{c1}(3872)$ structure as a compact tetraquark. Comparisons with model calculations and implications for the binding energy of the $蠂_{c1}(3872)$ state are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.06619v2-abstract-full').style.display = 'none'; document.getElementById('2009.06619v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-023.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-023, CERN-EP-2020-161 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 126, 092001 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2009.02481">arXiv:2009.02481</a> <span> [<a href="https://arxiv.org/pdf/2009.02481">pdf</a>, <a href="https://arxiv.org/format/2009.02481">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP11(2020)095">10.1007/JHEP11(2020)095 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the doubly heavy $\mathit螢_{bc}^{0}$ baryon via decays to $D^0pK^-$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a> , et al. (973 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2009.02481v2-abstract-short" style="display: inline;"> A search for the doubly heavy $\mathit螢_{bc}^{0}$ baryon using its decay to the $D^0pK^-$ final state is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment between 2016 and 2018, corresponding to an integrated luminosity of 5.4 $\mathrm{fb}^{-1}$. No significant signal is found in the invariant mass range from 6.7 to 7.2… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.02481v2-abstract-full').style.display = 'inline'; document.getElementById('2009.02481v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2009.02481v2-abstract-full" style="display: none;"> A search for the doubly heavy $\mathit螢_{bc}^{0}$ baryon using its decay to the $D^0pK^-$ final state is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment between 2016 and 2018, corresponding to an integrated luminosity of 5.4 $\mathrm{fb}^{-1}$. No significant signal is found in the invariant mass range from 6.7 to 7.2 $\mathrm{GeV}/c^2$. Upper limits are set at $95\%$ credibility level on the ratio of the $\mathit螢_{bc}^{0}$ production cross-section times its branching fraction to $D^0pK^-$ relative to that of the $\mathit螞_{b}^{0} \to D^0pK^-$ decay. The limits are set as a function of the $\mathit螢_{bc}^{0}$ mass and lifetime hypotheses, in the rapidity range from 2.0 to 4.5 and in the transverse momentum region from 5 to 25 $\mathrm{GeV}/c$. Upper limits range from $1.7\times10^{-2}$ to $3.0\times10^{-1}$ for the considered $\mathit螢_{bc}^{0}$ mass and lifetime hypotheses. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.02481v2-abstract-full').style.display = 'none'; document.getElementById('2009.02481v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-014.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-014, CERN-EP-2020-137 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP11(2020)095 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2009.00026">arXiv:2009.00026</a> <span> [<a href="https://arxiv.org/pdf/2009.00026">pdf</a>, <a href="https://arxiv.org/format/2009.00026">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.112003">10.1103/PhysRevD.102.112003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Amplitude analysis of the $B^+\to D^+D^-K^+$ decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (948 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2009.00026v3-abstract-short" style="display: inline;"> Results are reported from an amplitude analysis of the $B^+\to D^+D^-K^+$ decay. The analysis is carried out using LHCb proton-proton collision data taken at $\sqrt{s}=7,8,$ and $13$ TeV, corresponding to a total integrated luminosity of 9 fb$^{-1}$. In order to obtain a good description of the data, it is found to be necessary to include new spin-0 and spin-1 resonances in the $D^-K^+$ channel wi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.00026v3-abstract-full').style.display = 'inline'; document.getElementById('2009.00026v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2009.00026v3-abstract-full" style="display: none;"> Results are reported from an amplitude analysis of the $B^+\to D^+D^-K^+$ decay. The analysis is carried out using LHCb proton-proton collision data taken at $\sqrt{s}=7,8,$ and $13$ TeV, corresponding to a total integrated luminosity of 9 fb$^{-1}$. In order to obtain a good description of the data, it is found to be necessary to include new spin-0 and spin-1 resonances in the $D^-K^+$ channel with masses around 2.9 GeV$/c^2$, and a new spin-0 charmonium resonance in proximity to the spin-2 $蠂_{c2}(3930)$ state. The masses and widths of these resonances are determined, as are the relative contributions of all components in the amplitude model, which additionally include the vector charmonia $蠄(3770)$, $蠄(4040)$, $蠄(4160)$ and $蠄(4415)$ states and a nonresonant component. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.00026v3-abstract-full').style.display = 'none'; document.getElementById('2009.00026v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-025.html (LHCb public pages). v2 adds arXiv identifier for simultaneously-submitted LHCb-PAPER-2020-024. v3 matches published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-025, CERN-EP-2020-159 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 112003 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2009.00025">arXiv:2009.00025</a> <span> [<a href="https://arxiv.org/pdf/2009.00025">pdf</a>, <a href="https://arxiv.org/format/2009.00025">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.125.242001">10.1103/PhysRevLett.125.242001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Model-independent study of structure in $B^+\to D^+D^-K^+$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (948 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2009.00025v3-abstract-short" style="display: inline;"> The only anticipated resonant contributions to $B^+\to D^+D^-K^+$ decays are charmonium states in the $D^+D^-$ channel. A model-independent analysis, using LHCb proton-proton collision data taken at centre-of-mass energies of $\sqrt{s}=7,8,$ and $13$ TeV, corresponding to a total integrated luminosity of 9 fb$^{-1}$, is carried out to test this hypothesis. The description of the data assuming that… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.00025v3-abstract-full').style.display = 'inline'; document.getElementById('2009.00025v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2009.00025v3-abstract-full" style="display: none;"> The only anticipated resonant contributions to $B^+\to D^+D^-K^+$ decays are charmonium states in the $D^+D^-$ channel. A model-independent analysis, using LHCb proton-proton collision data taken at centre-of-mass energies of $\sqrt{s}=7,8,$ and $13$ TeV, corresponding to a total integrated luminosity of 9 fb$^{-1}$, is carried out to test this hypothesis. The description of the data assuming that resonances only manifest in decays to the $D^+D^-$ pair is shown to be incomplete. This constitutes evidence for a new contribution to the decay, potentially one or more new charm-strange resonances in the $D^-K^+$ channel with masses around 2.9 GeV$/c^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.00025v3-abstract-full').style.display = 'none'; document.getElementById('2009.00025v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-024.html (LHCb public pages). v2 adds arXiv identifier for simultaneously-submitted LHCb-PAPER-2020-025. v3 matches published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-024, CERN-EP-2020-158 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 125, 242001 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.12096">arXiv:2007.12096</a> <span> [<a href="https://arxiv.org/pdf/2007.12096">pdf</a>, <a href="https://arxiv.org/format/2007.12096">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.071101">10.1103/PhysRevD.102.071101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First branching fraction measurement of the suppressed decay $螢_c^0\to 蟺^-螞_c^+$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (948 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2007.12096v2-abstract-short" style="display: inline;"> The $螢_c^0$ baryon is unstable and usually decays into charmless final states by the $c \to s u\overline{d}$ transition. It can, however, also disintegrate into a $蟺^-$ meson and a $螞_c^+$ baryon via $s$ quark decay or via $cs\to d c$ weak scattering. The interplay between the latter two processes governs the size of the branching fraction ${\cal{B}}$$(螢_c^0\to 蟺^-螞_c^+)$, first measured here to b… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.12096v2-abstract-full').style.display = 'inline'; document.getElementById('2007.12096v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.12096v2-abstract-full" style="display: none;"> The $螢_c^0$ baryon is unstable and usually decays into charmless final states by the $c \to s u\overline{d}$ transition. It can, however, also disintegrate into a $蟺^-$ meson and a $螞_c^+$ baryon via $s$ quark decay or via $cs\to d c$ weak scattering. The interplay between the latter two processes governs the size of the branching fraction ${\cal{B}}$$(螢_c^0\to 蟺^-螞_c^+)$, first measured here to be $(0.55\pm 0.02 \pm 0.18)$%, where the first uncertainty is statistical and second systematic. This result is compatible with the larger of the theoretical predictions that connect models of hyperon decays using partially conserved axial currents and SU(3) symmetry with those involving the heavy-quark expansion and heavy-quark symmetry. In addition, the branching fraction of the normalization channel, ${\cal{B}}(螢_c^+\to p K^- 蟺^+) = (1.135 \pm 0.002 \pm 0.387)$% is measured. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.12096v2-abstract-full').style.display = 'none'; document.getElementById('2007.12096v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Sixteen pages and three figures. All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-016.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2020-129, LHCb-PAPER-2020-016 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 071101 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.11292">arXiv:2007.11292</a> <span> [<a href="https://arxiv.org/pdf/2007.11292">pdf</a>, <a href="https://arxiv.org/format/2007.11292">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.112012">10.1103/PhysRevD.102.112012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First observation of the decay $螞_b^0 \to 畏_c(1S) p K^-$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a> , et al. (971 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2007.11292v2-abstract-short" style="display: inline;"> The decay $螞_b^0 \to 畏_c(1S) p K^-$ is observed for the first time using a data sample of proton-proton collisions, corresponding to an integrated luminosity of 5.5 $fb^{-1}$, collected with the LHCb experiment at a center-of-mass energy of 13 TeV. The branching fraction of the decay is measured, using the $螞_b^0 \to J/蠄p K^-$ decay as a normalization mode, to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.11292v2-abstract-full').style.display = 'inline'; document.getElementById('2007.11292v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.11292v2-abstract-full" style="display: none;"> The decay $螞_b^0 \to 畏_c(1S) p K^-$ is observed for the first time using a data sample of proton-proton collisions, corresponding to an integrated luminosity of 5.5 $fb^{-1}$, collected with the LHCb experiment at a center-of-mass energy of 13 TeV. The branching fraction of the decay is measured, using the $螞_b^0 \to J/蠄p K^-$ decay as a normalization mode, to be $\mathcal{B}(螞_b^0 \to 畏_c(1S) p K^-)=(1.06\pm0.16\pm0.06^{+0.22}_{-0.19})\times10^{-4}$, where the quoted uncertainties are statistical, systematic and due to external inputs, respectively. A study of the $畏_c(1S) p$ mass spectrum is performed to search for the $P_c(4312)^+$ pentaquark state. No evidence is observed and an upper limit of \begin{equation*} \frac{\mathcal{B}(螞_b^0 \to P_c(4312)^+ K^-)\times \mathcal{B}(P_c(4312)^+ \to 畏_c(1S) p)}{\mathcal{B}(螞_b^0 \to 畏_c(1S) p K^-)} < 0.24 \end{equation*} is obtained at the 95% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.11292v2-abstract-full').style.display = 'none'; document.getElementById('2007.11292v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-012.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-012, CERN-EP-2020-124 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 112012 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.06945">arXiv:2007.06945</a> <span> [<a href="https://arxiv.org/pdf/2007.06945">pdf</a>, <a href="https://arxiv.org/format/2007.06945">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.125.212001">10.1103/PhysRevLett.125.212001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of enhanced double parton scattering in proton-lead collisions at $\sqrt{s_\mathrm{NN}}=8.16$ TeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a> , et al. (978 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2007.06945v2-abstract-short" style="display: inline;"> A study of prompt charm-hadron pair production in proton-lead collisions at $\sqrt{s_\mathrm{NN}}= 8.16$ TeV is performed using data corresponding to an integrated luminosity of about 30 nb${}^{-1}$, collected with the LHCb experiment. Production cross-sections for different pairs of charm hadrons are measured and kinematic correlations between the two charm hadrons are investigated. This is the f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.06945v2-abstract-full').style.display = 'inline'; document.getElementById('2007.06945v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.06945v2-abstract-full" style="display: none;"> A study of prompt charm-hadron pair production in proton-lead collisions at $\sqrt{s_\mathrm{NN}}= 8.16$ TeV is performed using data corresponding to an integrated luminosity of about 30 nb${}^{-1}$, collected with the LHCb experiment. Production cross-sections for different pairs of charm hadrons are measured and kinematic correlations between the two charm hadrons are investigated. This is the first measurement of associated production of two charm hadrons in proton-lead collisions. The results confirm the predicted enhancement of double parton scattering production in proton-lead collisions compared to the single parton scattering production. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.06945v2-abstract-full').style.display = 'none'; document.getElementById('2007.06945v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-010.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-010, CERN-EP-2020-119 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 125 (2020) 212001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.04280">arXiv:2007.04280</a> <span> [<a href="https://arxiv.org/pdf/2007.04280">pdf</a>, <a href="https://arxiv.org/format/2007.04280">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.051102">10.1103/PhysRevD.102.051102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First observation of the decay $B^0 \rightarrow D^0 \overline{D}{}^0 K^+ 蟺^-$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a> , et al. (949 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2007.04280v2-abstract-short" style="display: inline;"> The first observation of the decay $B^0 \rightarrow D^0 \overline{D}{}^0 K^+ 蟺^-$ is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7 $\mathrm{fb}^{-1}$ collected by the LHCb experiment in 2011, 2012 and 2016. The measurement is performed in the full kinematically allowed range of the decay outside of the $D^{*-}$ region. The ratio of the branching fract… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.04280v2-abstract-full').style.display = 'inline'; document.getElementById('2007.04280v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.04280v2-abstract-full" style="display: none;"> The first observation of the decay $B^0 \rightarrow D^0 \overline{D}{}^0 K^+ 蟺^-$ is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7 $\mathrm{fb}^{-1}$ collected by the LHCb experiment in 2011, 2012 and 2016. The measurement is performed in the full kinematically allowed range of the decay outside of the $D^{*-}$ region. The ratio of the branching fraction relative to that of the control channel $B^0 \rightarrow D^{*-} D^0 K^+$ is measured to be $\mathcal{R} = (14.2 \pm 1.1 \pm 1.0)\%$, where the first uncertainty is statistical and the second is systematic. The absolute branching fraction of $B^0 \rightarrow D^0 \overline{D}{}^0 K^+ 蟺^-$ decays is thus determined to be $\mathcal{B}(B^0 \rightarrow D^0 \overline{D}{}^0 K^+ 蟺^-) = (3.50 \pm 0.27 \pm 0.26 \pm 0.30) \times 10^{-4}$, where the third uncertainty is due to the branching fraction of the control channel. This decay mode is expected to provide insights to spectroscopy and the charm-loop contributions in rare semileptonic decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.04280v2-abstract-full').style.display = 'none'; document.getElementById('2007.04280v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-015.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-015, CERN-EP-2020-112 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 051102 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.03923">arXiv:2007.03923</a> <span> [<a href="https://arxiv.org/pdf/2007.03923">pdf</a>, <a href="https://arxiv.org/format/2007.03923">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP10(2020)156">10.1007/JHEP10(2020)156 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searches for low-mass dimuon resonances </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a> , et al. (949 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2007.03923v2-abstract-short" style="display: inline;"> Searches are performed for a low-mass dimuon resonance, $X$, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using a data sample corresponding to an integrated luminosity of 5.1 fb$^{-1}$ and collected with the LHCb detector. The $X$ bosons can either decay promptly or displaced from the proton-proton collision, where in both cases the requirements placed on the event an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.03923v2-abstract-full').style.display = 'inline'; document.getElementById('2007.03923v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.03923v2-abstract-full" style="display: none;"> Searches are performed for a low-mass dimuon resonance, $X$, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using a data sample corresponding to an integrated luminosity of 5.1 fb$^{-1}$ and collected with the LHCb detector. The $X$ bosons can either decay promptly or displaced from the proton-proton collision, where in both cases the requirements placed on the event and the assumptions made about the production mechanisms are kept as minimal as possible. The searches for promptly decaying $X$ bosons explore the mass range from near the dimuon threshold up to 60 GeV, with nonnegligible $X$ widths considered above 20 GeV. The searches for displaced $X \to 渭^+渭^-$ decays consider masses up to 3 GeV. None of the searches finds evidence for a signal and 90% confidence-level exclusion limits are placed on the $X \to 渭^+渭^-$ cross sections, each with minimal model dependence. In addition, these results are used to place world-leading constraints on GeV-scale bosons in the two-Higgs-doublet and hidden-valley scenarios. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.03923v2-abstract-full').style.display = 'none'; document.getElementById('2007.03923v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-013.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-013, CERN-EP-2020-114 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 10 (2020) 156 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2006.16957">arXiv:2006.16957</a> <span> [<a href="https://arxiv.org/pdf/2006.16957">pdf</a>, <a href="https://arxiv.org/format/2006.16957">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.scib.2020.08.032">10.1016/j.scib.2020.08.032 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of structure in the $J/蠄$-pair mass spectrum </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a> , et al. (948 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2006.16957v2-abstract-short" style="display: inline;"> Using proton-proton collision data at centre-of-mass energies of $\sqrt{s} = 7$, $8$ and $13\mathrm{\,TeV}$ recorded by the LHCb experiment at the Large Hadron Collider, corresponding to an integrated luminosity of $9\mathrm{\,fb}^{-1}$, the invariant mass spectrum of $J/蠄$ pairs is studied. A narrow structure around $6.9\mathrm{\,GeV/}c^2$ matching the lineshape of a resonance and a broad structu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.16957v2-abstract-full').style.display = 'inline'; document.getElementById('2006.16957v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.16957v2-abstract-full" style="display: none;"> Using proton-proton collision data at centre-of-mass energies of $\sqrt{s} = 7$, $8$ and $13\mathrm{\,TeV}$ recorded by the LHCb experiment at the Large Hadron Collider, corresponding to an integrated luminosity of $9\mathrm{\,fb}^{-1}$, the invariant mass spectrum of $J/蠄$ pairs is studied. A narrow structure around $6.9\mathrm{\,GeV/}c^2$ matching the lineshape of a resonance and a broad structure just above twice the $J/蠄$ mass are observed. The deviation of the data from nonresonant $J/蠄$-pair production is above five standard deviations in the mass region between $6.2$ and $7.4\mathrm{\,GeV/}c^2$, covering predicted masses of states composed of four charm quarks. The mass and natural width of the narrow $X(6900)$ structure are measured assuming a Breit--Wigner lineshape. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.16957v2-abstract-full').style.display = 'none'; document.getElementById('2006.16957v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-011.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2020-115, LHCb-PAPER-2020-011 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Science Bulletin 65 (2020) 1983 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2006.03145">arXiv:2006.03145</a> <span> [<a href="https://arxiv.org/pdf/2006.03145">pdf</a>, <a href="https://arxiv.org/format/2006.03145">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-020-8365-0">10.1140/epjc/s10052-020-8365-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for $CP$ violation in $螢_c^+\rightarrow pK^-蟺^+$ decays using model-independent techniques </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (932 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2006.03145v3-abstract-short" style="display: inline;"> A first search for $CP$ violation in the Cabibbo-suppressed $螢_c^+\rightarrow pK^-蟺^+$ decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are based on a sample of proton-proton collision data, corresponding to an integrated luminosity of $3.0~{\rm fb^{-1}}$, and collected by the LHCb experiment at centre-of-mass energies of $7$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.03145v3-abstract-full').style.display = 'inline'; document.getElementById('2006.03145v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.03145v3-abstract-full" style="display: none;"> A first search for $CP$ violation in the Cabibbo-suppressed $螢_c^+\rightarrow pK^-蟺^+$ decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are based on a sample of proton-proton collision data, corresponding to an integrated luminosity of $3.0~{\rm fb^{-1}}$, and collected by the LHCb experiment at centre-of-mass energies of $7$ and $8~\rm TeV$. The data are consistent with the hypothesis of no $CP$ violation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.03145v3-abstract-full').style.display = 'none'; document.getElementById('2006.03145v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-026.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2020-069, LHCb-PAPER-2019-026 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> https://epjc.epj.org/articles/epjc/abs/2020/10/10052_2020_Article_8365/10052_2020_Article_8365.html </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.13422">arXiv:2005.13422</a> <span> [<a href="https://arxiv.org/pdf/2005.13422">pdf</a>, <a href="https://arxiv.org/format/2005.13422">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP08(2020)123">10.1007/JHEP08(2020)123 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of the $蠄_2(3823)$ and $蠂_{c1}(3872)$ states in $B^+ \rightarrow \left( J蠄蟺^+蟺^-\right)K^+$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a> , et al. (940 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.13422v4-abstract-short" style="display: inline;"> The decays $B^+\rightarrow J/蠄蟺^+ 蟺^- K^+$ are studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$ collected with the LHCb detector in proton-proton collisions between 2011 and 2018. Precise measurements of the ratios of branching fractions with the intermediate $蠄_2(3823)$, $蠂_{c1}(3872)$ and $蠄(2S)$ states are reported. The decay of $B^+\rightarrow 蠄_2(3823)K^+$ with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.13422v4-abstract-full').style.display = 'inline'; document.getElementById('2005.13422v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.13422v4-abstract-full" style="display: none;"> The decays $B^+\rightarrow J/蠄蟺^+ 蟺^- K^+$ are studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$ collected with the LHCb detector in proton-proton collisions between 2011 and 2018. Precise measurements of the ratios of branching fractions with the intermediate $蠄_2(3823)$, $蠂_{c1}(3872)$ and $蠄(2S)$ states are reported. The decay of $B^+\rightarrow 蠄_2(3823)K^+$ with $蠄_2(3823)\rightarrow J蠄蟺^+蟺^-$ is observed for the first time with a significance of 5.1 standard deviations. The mass differences between the $蠄_2(3823)$, $蠂_{c1}(3872)$ and $蠄(2S)$ states are measured to be $$ \begin{array}{rcl} m_{蠂_{c1(3872)}} - m_{蠄_2(3823)} &= & 47.50 \pm 0.53 \pm 0.13\,\mathrm{MeV/}c^2\,, \\ m_{蠄_2(3823)} - m_{蠄(2S)} &= & 137.98 \pm 0.53 \pm 0.14\,\mathrm{MeV/}c^2\,, \\ m_{蠂_{c1}(3872)} - m_{蠄(2S)} &= & 185.49 \pm 0.06 \pm 0.03\,\mathrm{MeV/}c^2\,, \end{array} $$ resulting in the most precise determination of the $蠂_{c1}(3782)$ mass. The width of the $蠄_2(3823)$ state is found to be below 5.2MeV at 90\% confidence level. The Breit-Wigner width of the $蠂_{c1}(3872)$ state is measured to be $$ 螕^{\mathrm{BW}}_{蠂_{c1}(3872)} = 0.96^{+0.19}_{-0.18}\pm0.21 \mathrm{MeV},$$ which is inconsistent with zero by 5.5 standard deviations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.13422v4-abstract-full').style.display = 'none'; document.getElementById('2005.13422v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">26 pages, 3 figures. All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-009.html (LHCb public pages). arXiv admin note: text overlap with arXiv:2011.01867</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2020-071, LHCb-PAPER-2020-009 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 08 (2020) 123 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.13419">arXiv:2005.13419</a> <span> [<a href="https://arxiv.org/pdf/2005.13419">pdf</a>, <a href="https://arxiv.org/format/2005.13419">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.092005">10.1103/PhysRevD.102.092005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of the lineshape of the $蠂_{c1}(3872)$ state </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Aliouche%2C+Z">Z. Aliouche</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a> , et al. (949 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.13419v3-abstract-short" style="display: inline;"> A study of the lineshape of the $蠂_{c1}(3872)$ state is made using a data sample corresponding to an integrated luminosity of $3\,$fb$^{-1}$ collected in $pp$ collisions at centre-of-mass energies of 7 and 8\,TeV with the LHCb detector. Candidate $蠂_{c1}(3872)$ and $蠄(2S)$ mesons from b-hadron decays are selected in the $ J/蠄蟺^+ 蟺^-$ decay mode. Describing the {\mbox{lineshape}} with a Breit--Wign… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.13419v3-abstract-full').style.display = 'inline'; document.getElementById('2005.13419v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.13419v3-abstract-full" style="display: none;"> A study of the lineshape of the $蠂_{c1}(3872)$ state is made using a data sample corresponding to an integrated luminosity of $3\,$fb$^{-1}$ collected in $pp$ collisions at centre-of-mass energies of 7 and 8\,TeV with the LHCb detector. Candidate $蠂_{c1}(3872)$ and $蠄(2S)$ mesons from b-hadron decays are selected in the $ J/蠄蟺^+ 蟺^-$ decay mode. Describing the {\mbox{lineshape}} with a Breit--Wigner function, the mass splitting between the $蠂_{c1}(3872)$ and $蠄(2S)$ states, $螖m$, and the width of the $蠂_{c1}(3872)$ state, $螕_{\mathrm{BW}}$, are determined to be \begin{eqnarray*} 螖m & = & 185.598 \pm 0.067 \pm 0.068\, \mathrm{MeV} \,, \\ 螕_{\mathrm{BW}} & = & \phantom{00}1.39\phantom{0} \pm 0.24\phantom{0} \pm 0.10\phantom{0} \mathrm{MeV} \,, \end{eqnarray*} where the first uncertainty is statistical and the second systematic. Using a Flatt茅-inspired model, the mode and full width at half maximum of the lineshape are determined to be \begin{eqnarray*} \mathrm{mode} & = 3871.69^{\,+\,0.00\,+\,0.05}_{\,-\,0.04\,-\,0.13} &\mathrm{MeV} \\ \mathrm{FWHM} & = 0.22^{\,+\,0.07\,+\,0.11}_{\,-\,0.06\,-\,0.13}& \mathrm{MeV} . \end{eqnarray*} An investigation of the analytic structure of the Flatt茅 amplitude reveals a pole structure, which is compatible with a quasi-bound $D^0\bar{D}^{*0}$ state but a quasi-virtual state is still allowed at the level of $2$ standard deviations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.13419v3-abstract-full').style.display = 'none'; document.getElementById('2005.13419v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-008.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2020-086, LHCb-PAPER-2020-008 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 092005 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.10264">arXiv:2005.10264</a> <span> [<a href="https://arxiv.org/pdf/2005.10264">pdf</a>, <a href="https://arxiv.org/format/2005.10264">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP12(2020)139">10.1007/JHEP12(2020)139 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of branching fraction ratios for $B^+\to D^{*+}D^-K^+$, $B^+\to D^{*-}D^+K^+$, and $B^0\to D^{*-}D^0K^+$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (896 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.10264v2-abstract-short" style="display: inline;"> A measurement of four branching-fraction ratios for three-body decays of $B$ mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 $pp$ collision data are used, recorded by the LHCb experiment at centre-of-mass energies $7$, $8$, and $13$ TeV and corresponding to an integrated luminosity of $9$ fb$^{-1}$. The measured branching-fraction ratios are \[ \begin{eqnar… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.10264v2-abstract-full').style.display = 'inline'; document.getElementById('2005.10264v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.10264v2-abstract-full" style="display: none;"> A measurement of four branching-fraction ratios for three-body decays of $B$ mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 $pp$ collision data are used, recorded by the LHCb experiment at centre-of-mass energies $7$, $8$, and $13$ TeV and corresponding to an integrated luminosity of $9$ fb$^{-1}$. The measured branching-fraction ratios are \[ \begin{eqnarray} \frac{\mathcal{B} (B^+\to D^{*+}D^-K^+)}{\mathcal{B} (B^+\to \kern 0.2em\overline{\kern -0.2em D}{}^0 D^0 K^+)} &=& 0.517 \pm 0.015 \pm 0.013 \pm 0.011 , \\ \frac{\mathcal{B} (B^+\to D^{*-}D^+K^+)}{\mathcal{B} (B^+\to \kern 0.2em\overline{\kern -0.2em D}{}^0 D^0 K^+)} &=& 0.577 \pm 0.016 \pm 0.013 \pm 0.013 , \\ \frac{\mathcal{B} (B^0\to D^{*-}D^0K^+)}{\mathcal{B} (B^0\to D^- D^0 K^+)} &=& 1.754 \pm 0.028 \pm 0.016 \pm 0.035 , \\ \frac{\mathcal{B} (B^+\to D^{*+}D^-K^+)}{\mathcal{B} (B^+\to D^{*-}D^+K^+)} &=& 0.907 \pm 0.033 \pm 0.014 ,\end{eqnarray} \] where the first of the uncertainties is statistical, the second systematic, and the third is due to the uncertainties on the $D$-meson branching fractions. These are the most accurate measurements of these ratios to date. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.10264v2-abstract-full').style.display = 'none'; document.getElementById('2005.10264v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-006.html (LHCb public pages). v2 matches published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-006, CERN-EP-2020-056 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 12 (2020) 139 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.10563">arXiv:2004.10563</a> <span> [<a href="https://arxiv.org/pdf/2004.10563">pdf</a>, <a href="https://arxiv.org/format/2004.10563">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP06(2020)110">10.1007/JHEP06(2020)110 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $螞^0_b\rightarrow J/蠄螞$ angular distribution and the $螞^0_b$ polarisation in $pp$ collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreianov%2C+A">A. Andreianov</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (894 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2004.10563v2-abstract-short" style="display: inline;"> This paper presents an analysis of the $螞^0_b\rightarrow J/蠄螞$ angular distribution and the transverse production polarisation of $螞^0_b$ baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb$^{-1}$, collected with the LHCb experiment. The polarisation is determined in a fiduc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.10563v2-abstract-full').style.display = 'inline'; document.getElementById('2004.10563v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.10563v2-abstract-full" style="display: none;"> This paper presents an analysis of the $螞^0_b\rightarrow J/蠄螞$ angular distribution and the transverse production polarisation of $螞^0_b$ baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb$^{-1}$, collected with the LHCb experiment. The polarisation is determined in a fiducial region of $螞^0_b$ transverse momentum and pseudorapidity of $1 < p_{T} < 20$ GeV$/c$ and $2 < 畏< 5$, respectively. The data are consistent with $螞^0_b$ baryons being produced unpolarised in this region. The parity-violating asymmetry parameter of the $螞\rightarrow p蟺^-$ decay is also determined from the data and its value is found to be consistent with a recent measurement by the BES\,III collaboration. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.10563v2-abstract-full').style.display = 'none'; document.getElementById('2004.10563v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-005.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-005, CERN-EP-2020-051 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. High Energ. Phys. 2020, 110 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.08163">arXiv:2004.08163</a> <span> [<a href="https://arxiv.org/pdf/2004.08163">pdf</a>, <a href="https://arxiv.org/format/2004.08163">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP07(2020)123">10.1007/JHEP07(2020)123 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Precision measurement of the $B_{c}^{+}$ meson mass </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (887 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2004.08163v2-abstract-short" style="display: inline;"> A precision measurement of the $B_{c}^{+}$ meson mass is performed using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of $7, 8$ and $13$ TeV, corresponding to a total integrated luminosity of $9.0 \,{\rm fb}^{-1}$. The $B_{c}^{+}$ mesons are reconstructed via the decays $B_{c}^{+} \rightarrow J\mskip -3mu/\mskip -2mu蠄\mskip 2mu 蟺^+$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.08163v2-abstract-full').style.display = 'inline'; document.getElementById('2004.08163v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.08163v2-abstract-full" style="display: none;"> A precision measurement of the $B_{c}^{+}$ meson mass is performed using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of $7, 8$ and $13$ TeV, corresponding to a total integrated luminosity of $9.0 \,{\rm fb}^{-1}$. The $B_{c}^{+}$ mesons are reconstructed via the decays $B_{c}^{+} \rightarrow J\mskip -3mu/\mskip -2mu蠄\mskip 2mu 蟺^+$, $B_{c}^{+} \rightarrow J\mskip -3mu/\mskip -2mu蠄\mskip 2mu 蟺^+ 蟺^- 蟺^+$, $B_{c}^{+} \rightarrow J\mskip -3mu/\mskip -2mu蠄\mskip 2mu p \bar{p} 蟺^+$, $B_{c}^{+} \rightarrow J\mskip -3mu/\mskip -2mu蠄\mskip 2mu D_{s}^{+}$, $B_{c}^{+} \rightarrow J\mskip -3mu/\mskip -2mu蠄\mskip 2mu D^{0} K^{+}$ and $B_{c}^{+} \rightarrow B_{s}^{0} 蟺^{+}$. Combining the results of the individual decay channels, the $B_{c}^{+}$ mass is measured to be $6274.47 \pm 0.27 \,({\rm stat}) \pm 0.17 \,({\rm syst}) \mathrm{\,Me\kern -0.1em V}/c^{2}$. This is the most precise measurement of the $B_{c}^{+}$ mass to date. The difference between the $B_{c}^{+}$ and $B_{s}^{0}$ meson masses is measured to be $907.75 \pm 0.37 \,({\rm stat}) \pm 0.27 \,({\rm syst}) \mathrm{\,Me\kern -0.1em V}/c^{2}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.08163v2-abstract-full').style.display = 'none'; document.getElementById('2004.08163v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-003.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-003, CERN-EP-2020-048 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 07(2020) 123 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2003.13649">arXiv:2003.13649</a> <span> [<a href="https://arxiv.org/pdf/2003.13649">pdf</a>, <a href="https://arxiv.org/format/2003.13649">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.124.222001">10.1103/PhysRevLett.124.222001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of new $螢_c^0$ baryons decaying to $螞_c^+ K^-$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ex?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (889 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2003.13649v2-abstract-short" style="display: inline;"> The $螞_c^+K^-$ mass spectrum is studied with a data sample of $pp$ collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb$^{-1}$ collected by the LHCb experiment. Three $螢_c^0$ states are observed with a large significance and their masses and natural widths are measured to be \begin{eqnarray*} m(螢_c(2923)^0)&=& 2923.04 \pm 0.25 \pm 0.20 \pm 0.14 ~\math… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.13649v2-abstract-full').style.display = 'inline'; document.getElementById('2003.13649v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2003.13649v2-abstract-full" style="display: none;"> The $螞_c^+K^-$ mass spectrum is studied with a data sample of $pp$ collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb$^{-1}$ collected by the LHCb experiment. Three $螢_c^0$ states are observed with a large significance and their masses and natural widths are measured to be \begin{eqnarray*} m(螢_c(2923)^0)&=& 2923.04 \pm 0.25 \pm 0.20 \pm 0.14 ~\mathrm{MeV}, 螕(螢_c(2923)^0) &=& 7.1 \pm 0.8 \pm 1.8 ~\mathrm{MeV}, \end{eqnarray*} \begin{eqnarray*} m(螢_c(2939)^0) &=& 2938.55 \pm 0.21 \pm 0.17 \pm 0.14 ~\mathrm{ MeV}, 螕(螢_c(2939)^0) &=& 10.2 \pm 0.8 \pm 1.1 ~\mathrm{ MeV}, \end{eqnarray*} \begin{eqnarray*} m(螢_c(2965)^0) &=& 2964.88 \pm 0.26 \pm 0.14 \pm 0.14~\mathrm{ MeV}, 螕(螢_c(2965)^0) &=& 14.1 \pm 0.9 \pm 1.3~\mathrm{ MeV}, \end{eqnarray*} where the uncertainties are statistical, systematic, and due to the limited knowledge of the $螞_c^+$ mass. The $螢_c(2923)^0$ and $螢_c(2939)^0$ baryons are new states. The $螢_c(2965)^0$ state is in the vicinity of the known $螢_c(2970)^0$ baryon; however, their masses and natural widths differ significantly. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.13649v2-abstract-full').style.display = 'none'; document.getElementById('2003.13649v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-004.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-004, CERN-EP-2020-038 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124, 222001 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2003.08453">arXiv:2003.08453</a> <span> [<a href="https://arxiv.org/pdf/2003.08453">pdf</a>, <a href="https://arxiv.org/format/2003.08453">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP12(2020)144">10.1007/JHEP12(2020)144 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the shape of the $B_s^0\rightarrow D_s^{*-}渭^{+}谓_渭$ differential decay rate </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (887 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2003.08453v3-abstract-short" style="display: inline;"> The shape of the $B_s^0\rightarrow D_s^{*-}渭^+谓_渭$ differential decay rate is obtained as a function of the hadron recoil using proton-proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb$^{-1}$ collected by the LHCb detector. The $B_s^0\rightarrow D_s^{*-}渭^+谓_渭$ decay is reconstructed through the decays $D_s^{*-}\rightarrow D_s^{-}纬$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.08453v3-abstract-full').style.display = 'inline'; document.getElementById('2003.08453v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2003.08453v3-abstract-full" style="display: none;"> The shape of the $B_s^0\rightarrow D_s^{*-}渭^+谓_渭$ differential decay rate is obtained as a function of the hadron recoil using proton-proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb$^{-1}$ collected by the LHCb detector. The $B_s^0\rightarrow D_s^{*-}渭^+谓_渭$ decay is reconstructed through the decays $D_s^{*-}\rightarrow D_s^{-}纬$ and $D_s^{-}\rightarrow K^-K^+蟺^-$. The differential decay rate is fitted with the Caprini-Lellouch-Neubert (CLN) and Boyd-Grinstein-Lebed (BGL) parametrisations of the form factors, and the relevant quantities for both are extracted. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.08453v3-abstract-full').style.display = 'none'; document.getElementById('2003.08453v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-046.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2019-046, CERN-EP-2020-026 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 12 (2020) 144 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2003.04831">arXiv:2003.04831</a> <span> [<a href="https://arxiv.org/pdf/2003.04831">pdf</a>, <a href="https://arxiv.org/format/2003.04831">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.125.011802">10.1103/PhysRevLett.125.011802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $C\!P$-averaged observables in the $B^{0}\rightarrow K^{*0}渭^{+}渭^{-}$ decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (884 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2003.04831v2-abstract-short" style="display: inline;"> An angular analysis of the $B^{0}\rightarrow K^{*0}(\to K^{+}蟺^{-})渭^{+}渭^{-}$ decay is presented using a data set corresponding to an integrated luminosity of 4.7 fb$^{-1}$ of $pp$ collision data collected with the LHCb experiment. The full set of $C\!P$-averaged observables are determined in bins of the invariant mass squared of the dimuon system. Contamination from decays with the $K^{+}蟺^{-}$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.04831v2-abstract-full').style.display = 'inline'; document.getElementById('2003.04831v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2003.04831v2-abstract-full" style="display: none;"> An angular analysis of the $B^{0}\rightarrow K^{*0}(\to K^{+}蟺^{-})渭^{+}渭^{-}$ decay is presented using a data set corresponding to an integrated luminosity of 4.7 fb$^{-1}$ of $pp$ collision data collected with the LHCb experiment. The full set of $C\!P$-averaged observables are determined in bins of the invariant mass squared of the dimuon system. Contamination from decays with the $K^{+}蟺^{-}$ system in an S-wave configuration is taken into account. The tension seen between the previous LHCb results and the Standard Model predictions persists with the new data. The precise value of the significance of this tension depends on the choice of theory nuisance parameters. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.04831v2-abstract-full').style.display = 'none'; document.getElementById('2003.04831v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-002.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-002, CERN-EP-2020-027 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 125, 011802 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2003.04352">arXiv:2003.04352</a> <span> [<a href="https://arxiv.org/pdf/2003.04352">pdf</a>, <a href="https://arxiv.org/format/2003.04352">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP06(2020)129">10.1007/JHEP06(2020)129 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the lepton flavour violating decay $B^+ \rightarrow K^+ 渭^- 蟿^+$ using $B_{s2}^{*0}$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (885 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2003.04352v1-abstract-short" style="display: inline;"> A search is presented for the lepton flavour violating decay $B^+ \rightarrow K^+ 渭^- 蟿^+$ using a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb${}^{-1}$. The $蟿$ leptons are selected inclusively, primarily via decays with a single charged particle. The four-momentum of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.04352v1-abstract-full').style.display = 'inline'; document.getElementById('2003.04352v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2003.04352v1-abstract-full" style="display: none;"> A search is presented for the lepton flavour violating decay $B^+ \rightarrow K^+ 渭^- 蟿^+$ using a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb${}^{-1}$. The $蟿$ leptons are selected inclusively, primarily via decays with a single charged particle. The four-momentum of the $蟿$ lepton is determined by using $B^+$ mesons from $B_{s2}^{*0} \rightarrow B^+ K^-$ decays. No significant excess is observed, and an upper limit is set on the branching fraction $B(B^+ \rightarrow K^+ 渭^- 蟿^+) < 3.9 \times 10^{-5}$ at 90% confidence level. The obtained limit is comparable to the world-best limit. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.04352v1-abstract-full').style.display = 'none'; document.getElementById('2003.04352v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-043.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2019-043, CERN-EP-2020-020 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2003.03999">arXiv:2003.03999</a> <span> [<a href="https://arxiv.org/pdf/2003.03999">pdf</a>, <a href="https://arxiv.org/format/2003.03999">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.124.211802">10.1103/PhysRevLett.124.211802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the rare decays $B^0_s\to e^+e^-$ and $B^0\to e^+e^-$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (884 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2003.03999v2-abstract-short" style="display: inline;"> A search for the decays $B^0_s\to e^+e^-$ and $B^0\to e^+e^-$ is performed using data collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of $7$, $8$ and $13\,\text{TeV}$, corresponding to integrated luminosities of $1$, $2$ and $2\,\text{fb}^{-1}$, respectively. No signal is observed. Assuming no contribution from $B^0\to e^+e^-$ decays, an upper limit of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.03999v2-abstract-full').style.display = 'inline'; document.getElementById('2003.03999v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2003.03999v2-abstract-full" style="display: none;"> A search for the decays $B^0_s\to e^+e^-$ and $B^0\to e^+e^-$ is performed using data collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of $7$, $8$ and $13\,\text{TeV}$, corresponding to integrated luminosities of $1$, $2$ and $2\,\text{fb}^{-1}$, respectively. No signal is observed. Assuming no contribution from $B^0\to e^+e^-$ decays, an upper limit of $\mathcal{B}(B^0_s\to e^+e^-)<9.4\,(11.2)\times10^{-9}$ is obtained at $90\,(95)\,\%$ confidence level. If no $B^0_s\to e^+e^-$ contribution is assumed, a limit of $\mathcal{B}(B^0\to e^+e^-)<2.5\,(3.0)\times10^{-9}$ is determined at $90\,(95)\,\%$ confidence level. These upper limits are more than one order of magnitude lower than the previous values. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.03999v2-abstract-full').style.display = 'none'; document.getElementById('2003.03999v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-001.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2020-001, CERN-EP-2020-023 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124 (2020) 211802 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2002.08858">arXiv:2002.08858</a> <span> [<a href="https://arxiv.org/pdf/2002.08858">pdf</a>, <a href="https://arxiv.org/format/2002.08858">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP06(2020)058">10.1007/JHEP06(2020)058 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $CP$ observables in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D 蟺^{\pm}$ with $D \to K_{\rm{S}}^0 K^\pm 蟺^\mp$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (885 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2002.08858v2-abstract-short" style="display: inline;"> Measurements of $CP$ observables in $B^\pm \to D K^\pm$ and $B^\pm \to D 蟺^\pm$ decays are presented, where $D$ represents a superposition of $D^0$ and $\bar{D}^0$ states. The $D$ meson is reconstructed in the three-body final state $K_{\rm{S}}^0K^\pm 蟺^\mp$. The analysis uses samples of $B$ mesons produced in proton-proton collisions, corresponding to an integrated luminosity of 1.0, 2.0, and 6.0… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.08858v2-abstract-full').style.display = 'inline'; document.getElementById('2002.08858v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2002.08858v2-abstract-full" style="display: none;"> Measurements of $CP$ observables in $B^\pm \to D K^\pm$ and $B^\pm \to D 蟺^\pm$ decays are presented, where $D$ represents a superposition of $D^0$ and $\bar{D}^0$ states. The $D$ meson is reconstructed in the three-body final state $K_{\rm{S}}^0K^\pm 蟺^\mp$. The analysis uses samples of $B$ mesons produced in proton-proton collisions, corresponding to an integrated luminosity of 1.0, 2.0, and 6.0 fb$^{-1}$ collected with the LHCb detector at centre-of-mass energies of $\sqrt{s} = $ 7, 8, and 13 TeV, respectively. These measurements are the most precise to date, and provide important input for the determination of the CKM angle $纬$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.08858v2-abstract-full').style.display = 'none'; document.getElementById('2002.08858v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-044.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2019-044, CERN-EP-2020-015 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. High Energ. Phys. 06, 40 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2002.08229">arXiv:2002.08229</a> <span> [<a href="https://arxiv.org/pdf/2002.08229">pdf</a>, <a href="https://arxiv.org/format/2002.08229">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.012011">10.1103/PhysRevD.102.012011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the branching fraction of the decay $B_s^0\to K_S^0 K_S^0$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (887 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2002.08229v3-abstract-short" style="display: inline;"> A measurement of the branching fraction of the decay $B_s^0 \to K_S^0 K_S^0$ is performed using proton-proton collision data corresponding to an integrated luminosity of 5 $fb^{-1}$ collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be BR($B_s^0 \to K_S^0 K_S^0$) = [8.3 $\pm$ 1.6 (stat) $\pm$ 0.9 (syst) $\pm$ 0.8 (norm) $\pm$ 0.3 ($f_s/f_d$)]… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.08229v3-abstract-full').style.display = 'inline'; document.getElementById('2002.08229v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2002.08229v3-abstract-full" style="display: none;"> A measurement of the branching fraction of the decay $B_s^0 \to K_S^0 K_S^0$ is performed using proton-proton collision data corresponding to an integrated luminosity of 5 $fb^{-1}$ collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be BR($B_s^0 \to K_S^0 K_S^0$) = [8.3 $\pm$ 1.6 (stat) $\pm$ 0.9 (syst) $\pm$ 0.8 (norm) $\pm$ 0.3 ($f_s/f_d$)] $\times 10^{-6}$ , where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the branching fraction of the normalization mode $B^0 \to 蠁K_S^0$ and the ratio of hadronization fractions $f_s/f_d$. This is the most precise measurement of this branching fraction to date. Furthermore, a measurement of the branching fraction of the decay $B^0 \to K_S^0 K_S^0$ is performed relative to that of the $B_s^0 \to K_S^0 K_S^0$ channel, and is found to be $\frac{BR(B^0 \to K_S^0 K_S^0)}{BR(B_s^0 \to K_S^0 K_S^0)}$ = [7.5 $\pm$ 3.1 (stat) $\pm$ 0.5 (syst) $\pm$ 0.3 ($f_s/f_d$)] $\times 10^{-2}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.08229v3-abstract-full').style.display = 'none'; document.getElementById('2002.08229v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-030.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2019-030, CERN-EP-2020-008 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 012011 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2002.05112">arXiv:2002.05112</a> <span> [<a href="https://arxiv.org/pdf/2002.05112">pdf</a>, <a href="https://arxiv.org/format/2002.05112">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP06(2020)136">10.1007/JHEP06(2020)136 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a new baryon state in the $螞_b^0蟺^+蟺^-$ mass spectrum </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (886 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2002.05112v3-abstract-short" style="display: inline;"> A new baryon state is observed in the $螞_b^0蟺^+蟺^-$ mass spectrum with high significance using a data sample of $pp$ collisions, collected with the LHCb detector at centre-of-mass energies $\sqrt{s}=7, 8$ and 13TeV, corresponding to an integrated luminosity of 9fb$^{-1}$. The mass and natural width of the new state are measured to be \begin{eqnarray*} m & = & 6072.3 \pm 2.9 \pm 0.6 \pm 0.2 MeV\,,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.05112v3-abstract-full').style.display = 'inline'; document.getElementById('2002.05112v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2002.05112v3-abstract-full" style="display: none;"> A new baryon state is observed in the $螞_b^0蟺^+蟺^-$ mass spectrum with high significance using a data sample of $pp$ collisions, collected with the LHCb detector at centre-of-mass energies $\sqrt{s}=7, 8$ and 13TeV, corresponding to an integrated luminosity of 9fb$^{-1}$. The mass and natural width of the new state are measured to be \begin{eqnarray*} m & = & 6072.3 \pm 2.9 \pm 0.6 \pm 0.2 MeV\,, 螕& = & 72 \pm 11 \pm 2 MeV\,, \end{eqnarray*} where the first uncertainty is statistical and the second systematic. The third uncertainty for the mass is due to imprecise knowledge of the $螞_b^0$ baryon mass. The new state is consistent with the first radial excitation of the $螞_b^0$ baryon, the $螞_b(2S)^0$ resonance. Updated measurements of the masses and the upper limits on the natural widths of the previously observed $螞_b(5912)^0$ and $螞_b(5920)^0$ states are also reported. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.05112v3-abstract-full').style.display = 'none'; document.getElementById('2002.05112v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages, 6 figures, All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-045.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2020-013, LHCb-PAPER-2019-045 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 06 (2020) 136 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.10354">arXiv:2001.10354</a> <span> [<a href="https://arxiv.org/pdf/2001.10354">pdf</a>, <a href="https://arxiv.org/format/2001.10354">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.125.231801">10.1103/PhysRevLett.125.231801 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Constraints on the $K^0_{\mathrm{S}}\rightarrow渭^{+}渭^{-}$ branching fraction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (883 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2001.10354v2-abstract-short" style="display: inline;"> A search for the decay $K^0_{\mathrm{S}}\rightarrow渭^{+}渭^{-}$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6\,\text{fb}^{-1}$ and collected with the LHCb experiment during 2016, 2017 and 2018 at a center-of-mass energy of $13\,\mathrm{TeV}$. The observed signal yield is consistent with zero, yielding an upper limit of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.10354v2-abstract-full').style.display = 'inline'; document.getElementById('2001.10354v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.10354v2-abstract-full" style="display: none;"> A search for the decay $K^0_{\mathrm{S}}\rightarrow渭^{+}渭^{-}$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6\,\text{fb}^{-1}$ and collected with the LHCb experiment during 2016, 2017 and 2018 at a center-of-mass energy of $13\,\mathrm{TeV}$. The observed signal yield is consistent with zero, yielding an upper limit of ${\cal B}(K^0_{\mathrm{S}}\rightarrow渭^{+}渭^{-}) < 2.2 \times 10^{-10}$ at 90% CL. The limit reduces to ${\cal B}(K^0_{\mathrm{S}}\rightarrow渭^{+}渭^{-}) < 2.1 \times 10^{-10}$ at 90% CL once combined with the result from data taken in 2011 and 2012. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.10354v2-abstract-full').style.display = 'none'; document.getElementById('2001.10354v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-038.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2019-038 CERN-EP-2019-285 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 125, 231801 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.03225">arXiv:2001.03225</a> <span> [<a href="https://arxiv.org/pdf/2001.03225">pdf</a>, <a href="https://arxiv.org/format/2001.03225">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.101.072004">10.1103/PhysRevD.101.072004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $|V_{cb}|$ with $B_s^0 \to D_s^{(*)-} 渭^+ 谓_渭$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (886 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2001.03225v2-abstract-short" style="display: inline;"> The element $|V_{cb}|$ of the Cabibbo-Kobayashi-Maskawa matrix is measured using semileptonic $B_s^0$ decays produced in proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$. Rates of $B_s^0 \to D_s^{-} 渭^+ 谓_渭$ and $B_s^0 \to D_s^{*-} 渭^+ 谓_渭$ decays are analyzed using hadronic form-factor… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.03225v2-abstract-full').style.display = 'inline'; document.getElementById('2001.03225v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.03225v2-abstract-full" style="display: none;"> The element $|V_{cb}|$ of the Cabibbo-Kobayashi-Maskawa matrix is measured using semileptonic $B_s^0$ decays produced in proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$. Rates of $B_s^0 \to D_s^{-} 渭^+ 谓_渭$ and $B_s^0 \to D_s^{*-} 渭^+ 谓_渭$ decays are analyzed using hadronic form-factor parametrizations derived either by Caprini, Lellouch and Neubert (CLN) or by Boyd, Grinstein and Lebed (BGL). The measured values of $|V_{cb}|$ are ${(41.4 \pm 0.6 \pm 0.9 \pm 1.2)\times 10^{-3}}$ and ${(42.3 \pm 0.8 \pm 0.9 \pm 1.2)\times 10^{-3}}$ in the CLN and BGL parametrization, respectively. The first uncertainty is statistical, the second systematic, and the third is due to the external inputs used in the measurement. These results are in agreement with those obtained from decays of $B^+$ and $B^0$ mesons. They are the first determinations of $|V_{cb}|$ at a hadron-collider experiment and the first using $B_s^0$ meson decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.03225v2-abstract-full').style.display = 'none'; document.getElementById('2001.03225v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-041.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2019-041, CERN-EP-2019-282 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 101, 072004 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.00851">arXiv:2001.00851</a> <span> [<a href="https://arxiv.org/pdf/2001.00851">pdf</a>, <a href="https://arxiv.org/format/2001.00851">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.124.082002">10.1103/PhysRevLett.124.082002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First observation of excited $惟_b^-$ states </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (883 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2001.00851v2-abstract-short" style="display: inline;"> We report four narrow peaks in the $螢_b^0K^-$ mass spectrum obtained using $pp$ collisions at center-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9 fb$^{-1}$ recorded by the LHCb experiment. Referring to these states by their mass, the mass values are \begin{align*} m(惟_b(6316)^-) &= 6315.64\pm0.31\pm0.07\pm0.50 {\rm MeV}, \\ m(惟_b(6330)^-) &= 6330.30\pm0.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.00851v2-abstract-full').style.display = 'inline'; document.getElementById('2001.00851v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.00851v2-abstract-full" style="display: none;"> We report four narrow peaks in the $螢_b^0K^-$ mass spectrum obtained using $pp$ collisions at center-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9 fb$^{-1}$ recorded by the LHCb experiment. Referring to these states by their mass, the mass values are \begin{align*} m(惟_b(6316)^-) &= 6315.64\pm0.31\pm0.07\pm0.50 {\rm MeV}, \\ m(惟_b(6330)^-) &= 6330.30\pm0.28\pm0.07\pm0.50 {\rm MeV}, \\ m(惟_b(6340)^-) &= 6339.71\pm0.26\pm0.05\pm0.50 {\rm MeV}, \\ m(惟_b(6350)^-) &= 6349.88\pm0.35\pm0.05\pm0.50 {\rm MeV}, \end{align*}where the uncertainties are statistical, systematic and the last is due to the knowledge of the $螢_b^0$ mass. The natural widths of the three lower mass states are consistent with zero, and the 90% confidence-level upper limits are determined to be ${螕(惟_b(6316)^-)<2.8}$ MeV, ${螕(惟_b(6330)^-)<3.1}$ MeV and ${螕(惟_b(6340)^-)<1.5}$ MeV. The natural width of the $惟_b(6350)^-$ peak is $1.4^{+1.0}_{-0.8}\pm0.1$ MeV, which is 2.5$蟽$ from zero and corresponds to an upper limit of 2.8 MeV. The peaks have local significances ranging from 3.6$蟽$ to 7.2$蟽$. After accounting for the look-elsewhere effect, the significances of the $惟_b(6316)^-$ and $惟_b(6330)^-$ peaks are reduced to 2.1$蟽$ and 2.6$蟽$ respectively, while the two higher mass peaks exceed 5$蟽$. The observed peaks are consistent with expectations for excited $惟_b^-$ resonances. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.00851v2-abstract-full').style.display = 'none'; document.getElementById('2001.00851v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 2 figures, All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-042.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2019-042, CERN-EP-2019-278 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124, 082002 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.10741">arXiv:1912.10741</a> <span> [<a href="https://arxiv.org/pdf/1912.10741">pdf</a>, <a href="https://arxiv.org/format/1912.10741">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.051101">10.1103/PhysRevD.102.051101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for $C\!P$ violation and observation of $P$ violation in $螞_b^0 \to p 蟺^- 蟺^+ 蟺^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (883 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.10741v2-abstract-short" style="display: inline;"> A search for $C\!P$ violation in the $螞_b^0 \to p 蟺^- 蟺^+ 蟺^-$ decay is performed using LHCb data corresponding to an integrated luminosity of 6.6$\,fb^{-1}$ collected in $pp$ collisions at centre-of-mass energies of 7, 8 and 13$\,Te\kern -0.1em V$. The analysis uses both triple product asymmetries and the unbinned energy test method. The highest significances of $C\!P$ asymmetry are 2.9 standard… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.10741v2-abstract-full').style.display = 'inline'; document.getElementById('1912.10741v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.10741v2-abstract-full" style="display: none;"> A search for $C\!P$ violation in the $螞_b^0 \to p 蟺^- 蟺^+ 蟺^-$ decay is performed using LHCb data corresponding to an integrated luminosity of 6.6$\,fb^{-1}$ collected in $pp$ collisions at centre-of-mass energies of 7, 8 and 13$\,Te\kern -0.1em V$. The analysis uses both triple product asymmetries and the unbinned energy test method. The highest significances of $C\!P$ asymmetry are 2.9 standard deviations from triple product asymmetries and 3.0 standard deviations for the energy test method. Once the global $p$-value is considered, all results are consistent with no $C\!P$ violation. Parity violation is observed at a significance of $5.5$ standard deviations for the triple product asymmetry method and $5.3$ standard deviations for the energy test method. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.10741v2-abstract-full').style.display = 'none'; document.getElementById('1912.10741v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-028.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCB-PAPER-2019-028, CERN-EP-2019-256 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 051101 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.08139">arXiv:1912.08139</a> <span> [<a href="https://arxiv.org/pdf/1912.08139">pdf</a>, <a href="https://arxiv.org/format/1912.08139">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP05(2020)040">10.1007/JHEP05(2020)040 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Test of lepton universality with $螞^{0}_{b} \to p K^- \ell^+ \ell^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (886 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.08139v2-abstract-short" style="display: inline;"> The ratio of branching fractions of the decays $螞^{0}_{b}\to pK^{-}e^{+}e^{-}$ and $螞^{0}_{b}\to pK^{-}渭^{+}渭^{-}$, $R^{-1}_{pK}$, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 $fb^{-1}$ recorded with the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV. In the dilepton mass-squared range $0.1 < q^{2} < 6.0$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.08139v2-abstract-full').style.display = 'inline'; document.getElementById('1912.08139v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.08139v2-abstract-full" style="display: none;"> The ratio of branching fractions of the decays $螞^{0}_{b}\to pK^{-}e^{+}e^{-}$ and $螞^{0}_{b}\to pK^{-}渭^{+}渭^{-}$, $R^{-1}_{pK}$, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 $fb^{-1}$ recorded with the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV. In the dilepton mass-squared range $0.1 < q^{2} < 6.0$ $GeV^{2}/c^{4}$ and the $pK^{-}$ mass range $m(pK^{-}) < 2600$ $MeV/c^{2}$, the ratio of branching fractions is measured to be $R^{-1}_{pK} = 1.17 ^{+0.18}_{-0.16} \pm 0.07$, where the first uncertainty is statistical and the second systematic. This is the first test of lepton universality with b baryons and the first observation of the decay $螞^{0}_{b}\to pK^{-}e^{+}e^{-}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.08139v2-abstract-full').style.display = 'none'; document.getElementById('1912.08139v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-040.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2019-040, CERN-EP-2019-272 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. High Energ. Phys. 2020, 40 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.03723">arXiv:1912.03723</a> <span> [<a href="https://arxiv.org/pdf/1912.03723">pdf</a>, <a href="https://arxiv.org/format/1912.03723">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP03(2020)147">10.1007/JHEP03(2020)147 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $CP$ violation in $B^0\to D^{*\pm} D^{\mp}$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (883 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.03723v2-abstract-short" style="display: inline;"> The decay-time-dependent $CP$ asymmetry in $B^0 \to D^{*\pm}D^{\mp}$ decays is measured using a data set corresponding to an integrated luminosity of $9$fb$^{-1}$ recorded by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The $CP$ parameters are measured as $ S_{D^*D} = -0.861 \pm 0.077\,\text{(stat)} \pm 0.019 \,\text{(syst)}\,, $… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.03723v2-abstract-full').style.display = 'inline'; document.getElementById('1912.03723v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.03723v2-abstract-full" style="display: none;"> The decay-time-dependent $CP$ asymmetry in $B^0 \to D^{*\pm}D^{\mp}$ decays is measured using a data set corresponding to an integrated luminosity of $9$fb$^{-1}$ recorded by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The $CP$ parameters are measured as $ S_{D^*D} = -0.861 \pm 0.077\,\text{(stat)} \pm 0.019 \,\text{(syst)}\,, $ $ 螖S_{D^*D} = 0.019 \pm 0.075 \,\text{(stat)} \pm 0.012 \,\text{(syst)} \,, $ $ C_{D^*D} = -0.059 \pm 0.092 \,\text{(stat)} \pm 0.020 \,\text{(syst)} \,, $ $ 螖C_{D^*D} = -0.031 \pm 0.092 \,\text{(stat)} \pm 0.016 \,\text{(syst)} \,, $ $ {\cal A}_{D^*D} = 0.008 \pm 0.014 \,\text{(stat)} \pm 0.006 \,\text{(syst)}\,. $ The analysis provides the most precise single measurement of $CP$ violation in this decay channel to date. All parameters are consistent with their current world average values. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.03723v2-abstract-full').style.display = 'none'; document.getElementById('1912.03723v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-036.html</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2019-036, CERN-EP-2019-264 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of High Energy Physics, 03 (2020) 147 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.02110">arXiv:1912.02110</a> <span> [<a href="https://arxiv.org/pdf/1912.02110">pdf</a>, <a href="https://arxiv.org/format/1912.02110">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.124.111802">10.1103/PhysRevLett.124.111802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Isospin amplitudes in $螞_b^0\to J/蠄螞(危^0)$ and $螢_b^0\to J/蠄螢^0(螞)$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abell谩n Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ex?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Afsharnia%2C+H">H. Afsharnia</a>, <a href="/search/hep-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/hep-ex?searchtype=author&query=Aiola%2C+S">S. Aiola</a>, <a href="/search/hep-ex?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ex?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ex?searchtype=author&query=Albicocco%2C+P">P. Albicocco</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ex?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ex?searchtype=author&query=Albero%2C+A+A">A. Alfonso Albero</a>, <a href="/search/hep-ex?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ex?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ex?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ex?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ex?searchtype=author&query=Andreassi%2C+G">G. Andreassi</a>, <a href="/search/hep-ex?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a> , et al. (884 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.02110v5-abstract-short" style="display: inline;"> Ratios of isospin amplitudes in hadron decays are a useful probe of the interplay between weak and strong interactions, and allow searches for physics beyond the Standard Model. We present the first results on isospin amplitudes in $b$-baryon decays, using data corresponding to an integrated luminosity of 8.5 fb$^{-1}$, collected with the LHCb detector in $pp$ collisions at center of mass energies… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.02110v5-abstract-full').style.display = 'inline'; document.getElementById('1912.02110v5-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.02110v5-abstract-full" style="display: none;"> Ratios of isospin amplitudes in hadron decays are a useful probe of the interplay between weak and strong interactions, and allow searches for physics beyond the Standard Model. We present the first results on isospin amplitudes in $b$-baryon decays, using data corresponding to an integrated luminosity of 8.5 fb$^{-1}$, collected with the LHCb detector in $pp$ collisions at center of mass energies of 7, 8 and 13 TeV. The isospin amplitude ratio $|A_1(螞_b^0\to J/蠄危^0)/A_0(螞_b^0\to J/蠄螞)|$, where the subscript on $A$ indicates the final-state isospin, is measured to be less than 1/21.8 at 95\% confidence level. The Cabibbo suppressed $螢_b^0\to J/蠄螞$ decay is observed for the first time, allowing for the measurement $|A_0(螢_b^0\to J/蠄螞)/A_{1/2}(螢_b^0\to J/蠄螢^0)| =0.37 \pm 0.06\pm 0.02$, where the uncertainties are statistical and systematic, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.02110v5-abstract-full').style.display = 'none'; document.getElementById('1912.02110v5-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">All figures and tables, along with machine-readable versions and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-039.html (LHCb public pages)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2019-268, LHCb-PAPER-2019-039 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. 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