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class="pagination-link " aria-label="Page 5" aria-current="page">5 </a> </li> <li><span class="pagination-ellipsis">…</span></li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.15752">arXiv:2411.15752</a> <span> [<a href="https://arxiv.org/pdf/2411.15752">pdf</a>, <a href="https://arxiv.org/format/2411.15752">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> <p class="title is-5 mathjax"> Measurement of cross sections of $e^+e^-\to K^0_S K^0_S 蠄(3686)$ from $\sqrt{s}=$ 4.682 to 4.951 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (642 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="2411.15752v1-abstract-short" style="display: inline;"> The process $e^+e^-\to K^0_S K^0_S 蠄(3686)$ is studied by analyzing $e^+e^-$ collision data samples collected at eight center-of-mass energies ranging from 4.682 to 4.951 GeV with the BESIII detector operating at the BEPCII collider, corresponding to an integrated luminosity of $4.1~{\rm fb}^{-1}$. Observation of the $e^+e^-\to K^0_S K^0_S 蠄(3686)$ process is found for the first time with a statis… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.15752v1-abstract-full').style.display = 'inline'; document.getElementById('2411.15752v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.15752v1-abstract-full" style="display: none;"> The process $e^+e^-\to K^0_S K^0_S 蠄(3686)$ is studied by analyzing $e^+e^-$ collision data samples collected at eight center-of-mass energies ranging from 4.682 to 4.951 GeV with the BESIII detector operating at the BEPCII collider, corresponding to an integrated luminosity of $4.1~{\rm fb}^{-1}$. Observation of the $e^+e^-\to K^0_S K^0_S 蠄(3686)$ process is found for the first time with a statistical significance of $6.3蟽$, and the cross sections at each center-of-mass energy are measured. The ratio of cross sections of $e^+e^-\to K_S^0 K_S^0 蠄(3686)$ relative to $e^+e^-\to K^+ K^- 蠄(3686)$ is determined to be $\frac{蟽(e^+e^-\to K_S^0 K_S^0 蠄(3686))}{蟽(e^+e^-\to K^+ K^- 蠄(3686))}=0.45 \pm 0.25$, which is consistent with the prediction based on isospin symmetry. The uncertainty includes both statistical and systematic contributions. Additionally, the $K_S^0蠄(3686)$ invariant mass distribution is found to be consistent with three-body phase space. The significance of a contribution beyond three-body phase space is only $0.8蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.15752v1-abstract-full').style.display = 'none'; document.getElementById('2411.15752v1-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.15441">arXiv:2411.15441</a> <span> [<a href="https://arxiv.org/pdf/2411.15441">pdf</a>, <a href="https://arxiv.org/format/2411.15441">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> <p class="title is-5 mathjax"> Study of $\it螞_{\it{b}}^\rm{0}$ and $\it螢_{\it{b}}^\rm{0}$ decays to $\it螞 h^+h^{'-}$ and evidence for $CP$ violation in $\it螞_{\it{b}}^\rm{0}\to\it螞 K^+K^-$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1129 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="2411.15441v1-abstract-short" style="display: inline;"> A study of $\it螞_{\it{b}}^\rm{0}$ and $\it螢_{\it{b}}^\rm{0}$ decays to $\it螞 h^{+} h^{\prime -}$ $(h^{(\prime)}=蟺, K)$ is performed using $pp$ collision data collected by the LHCb experiment during LHC Runs 1$-$2, corresponding to an integrated luminosity of $9~\rm{fb}^{-1}$. The branching fractions for these decays are measured using the $\it螞_{\it{b}}^\rm{0}\to\it螞_{\it{c}}^+(\to\it螞蟺^+)蟺^-$ dec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.15441v1-abstract-full').style.display = 'inline'; document.getElementById('2411.15441v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.15441v1-abstract-full" style="display: none;"> A study of $\it螞_{\it{b}}^\rm{0}$ and $\it螢_{\it{b}}^\rm{0}$ decays to $\it螞 h^{+} h^{\prime -}$ $(h^{(\prime)}=蟺, K)$ is performed using $pp$ collision data collected by the LHCb experiment during LHC Runs 1$-$2, corresponding to an integrated luminosity of $9~\rm{fb}^{-1}$. The branching fractions for these decays are measured using the $\it螞_{\it{b}}^\rm{0}\to\it螞_{\it{c}}^+(\to\it螞蟺^+)蟺^-$ decay as control channel. The decays $\it螞_{\it{b}}^\rm{0}\to\it螞蟺^+蟺^-$ and $\it螢_{\it{b}}^\rm{0}\to\it螞K^-蟺^+$ are observed for the first time. For decay modes with sufficient signal yields, $CP$ asymmetries are measured in the full and localized regions of the final-state phase space. Evidence is found for $CP$ violation in the $\it螞_{\it{b}}^\rm{0}\to\it螞K^+K^-$ decay, interpreted as originating primarily from an asymmetric $\it螞_{\it{b}}^\rm{0} \to \it{N}^{*+} \it{K}^-$ decay amplitude. The measured $CP$ asymmetries for the other decays are compatible with zero. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.15441v1-abstract-full').style.display = 'none'; document.getElementById('2411.15441v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </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-2024-043.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-2024-043, CERN-EP-2024-281 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.12178">arXiv:2411.12178</a> <span> [<a href="https://arxiv.org/pdf/2411.12178">pdf</a>, <a href="https://arxiv.org/format/2411.12178">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> <p class="title is-5 mathjax"> First evidence for direct CP violation in beauty to charmonium 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1127 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="2411.12178v2-abstract-short" style="display: inline;"> The $C\!P$ asymmetry and branching fraction of the CKM-suppressed decay $B^+\!\to J\mskip -3mu/\mskip -2mu蠄\,蟺^+$ are precisely measured relative to the favoured decay $B^+\!\to J\mskip -3mu/\mskip -2mu蠄\,K^+$, using a sample of proton-proton collision data corresponding to an integrated luminosity of $5.4~\mathrm{fb}^{-1}$ recorded at center-of-mass energy of $13~\mathrm{TeV}$ during 2016--2018.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.12178v2-abstract-full').style.display = 'inline'; document.getElementById('2411.12178v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.12178v2-abstract-full" style="display: none;"> The $C\!P$ asymmetry and branching fraction of the CKM-suppressed decay $B^+\!\to J\mskip -3mu/\mskip -2mu蠄\,蟺^+$ are precisely measured relative to the favoured decay $B^+\!\to J\mskip -3mu/\mskip -2mu蠄\,K^+$, using a sample of proton-proton collision data corresponding to an integrated luminosity of $5.4~\mathrm{fb}^{-1}$ recorded at center-of-mass energy of $13~\mathrm{TeV}$ during 2016--2018. The results of the $C\!P$ asymmetry difference and branching fraction ratio are \begin{align*} 螖\mathcal{A}^{C\!P} &\equiv \mathcal{A}^{C\!P}(B^+ \to J\mskip -3mu/\mskip -2mu蠄\,蟺^+) - \mathcal{A}^{C\!P}(B^+ \to J\mskip -3mu/\mskip -2mu蠄\,K^+) = (1.29 \pm 0.49 \pm 0.08) \times 10^{-2}, \end{align*} \begin{equation*} \mathcal{R}_{蟺/K} \equiv \frac{\mathcal{B}(B^+ \!\to J\mskip -3mu/\mskip -2mu蠄\,蟺^+)}{\mathcal{B}(B^+ \!\to J\mskip -3mu/\mskip -2mu蠄\,K^+)} = (3.852 \pm 0.022 \pm 0.018) \times 10^{-2}. \end{equation*} where the first uncertainties are statistical and the second systematic. A combination with previous LHCb results based on data collected at $7$ and $8~\mathrm{TeV}$ in 2011 and 2012 yields $螖\mathcal{A}^{C\!P} = (1.42 \pm 0.43 \pm 0.08) \times 10^{-2}$ and $\mathcal{R}_{蟺/K} = (3.846 \pm 0.018 \pm 0.018) \times 10^{-2}$. The combined $螖\mathcal{A}^{C\!P}$ value deviates from zero by 3.2 standard deviations, providing the first evidence for direct $C\!P$ violation in the amplitudes of beauty decays to charmonium final states. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.12178v2-abstract-full').style.display = 'none'; document.getElementById('2411.12178v2-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </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">18 pages, 2 figures, no conference or journal information All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://lbfence.cern.ch/alcm/public/analysis/full-details/1623/ (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-2024-031 CERN-EP-2024-286 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.11648">arXiv:2411.11648</a> <span> [<a href="https://arxiv.org/pdf/2411.11648">pdf</a>, <a href="https://arxiv.org/ps/2411.11648">ps</a>, <a href="https://arxiv.org/format/2411.11648">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> <p class="title is-5 mathjax"> Evidence for Two Excited $惟^{-}$ Hyperons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (650 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="2411.11648v1-abstract-short" style="display: inline;"> Using $e^+e^-$ collision data corresponding to an integrated luminosity of 19 fb$^{-1}$ collected by the BESIII detector at center-of-mass energies ranging from 4.13 to 4.70 GeV, we report the first evidence for a new excited $惟^{-}$ hyperon, the $惟^*(2109)^{-}$, through the process $e^+ e^- \to 惟^*(2109)^{-} \bar惟^{+} +c.c.$ with a significance of 3.7 $蟽$. The mass and width of $惟^*(2109)^{-}$ ar… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.11648v1-abstract-full').style.display = 'inline'; document.getElementById('2411.11648v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.11648v1-abstract-full" style="display: none;"> Using $e^+e^-$ collision data corresponding to an integrated luminosity of 19 fb$^{-1}$ collected by the BESIII detector at center-of-mass energies ranging from 4.13 to 4.70 GeV, we report the first evidence for a new excited $惟^{-}$ hyperon, the $惟^*(2109)^{-}$, through the process $e^+ e^- \to 惟^*(2109)^{-} \bar惟^{+} +c.c.$ with a significance of 3.7 $蟽$. The mass and width of $惟^*(2109)^{-}$ are measured to be $2108.8 \pm 5.5_{\rm stat} \pm 1.5_{\rm syst} {\rm MeV}/c^{2}$ and $21.6 \pm 17.7_{\rm stat} \pm 9.4_{\rm syst} {\rm MeV}$, respectively. We also present evidence for production of the $惟^*(2012)^{-}$ in the process $e^+ e^- \to 惟^*(2012)^{-} \bar惟^{+} +c.c.$ with a significance of 3.7 $蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.11648v1-abstract-full').style.display = 'none'; document.getElementById('2411.11648v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </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">8 pages, 2 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.10219">arXiv:2411.10219</a> <span> [<a href="https://arxiv.org/pdf/2411.10219">pdf</a>, <a href="https://arxiv.org/format/2411.10219">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> <p class="title is-5 mathjax"> Constraints on the photon polarisation in $b \to s 纬$ transitions using $B_s^0 \rightarrow 蠁e^+e^-$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1120 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="2411.10219v2-abstract-short" style="display: inline;"> An angular analysis of the $B_s^0 \rightarrow 蠁e^+e^-$ decay is performed using the proton-proton collision dataset collected between 2011 and 2018 by the LHCb experiment, corresponding to an integrated luminosity of $9\,{\rm fb}^{-1}$ at centre-of-mass energies of 7, 8 and $13\,{\rm TeV}$. The analysis is performed in the very low dielectron invariant mass-squared region between $0.0009$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.10219v2-abstract-full').style.display = 'inline'; document.getElementById('2411.10219v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.10219v2-abstract-full" style="display: none;"> An angular analysis of the $B_s^0 \rightarrow 蠁e^+e^-$ decay is performed using the proton-proton collision dataset collected between 2011 and 2018 by the LHCb experiment, corresponding to an integrated luminosity of $9\,{\rm fb}^{-1}$ at centre-of-mass energies of 7, 8 and $13\,{\rm TeV}$. The analysis is performed in the very low dielectron invariant mass-squared region between $0.0009$ and $0.2615\,{\rm GeV}^2\!/c^4$. The longitudinal polarisation fraction of the $蠁$ meson is measured to be less than $11.5\%$ at $90\%$ confidence level. The $A_{\mathrm{T}}^{\mathcal{R}e C\!P}$ observable, which is related to the lepton forward-backward asymmetry, is measured to be $0.116 \pm 0.155 \pm 0.006$, where the first uncertainty is statistical and the second systematic. The transverse asymmetries, $A_{\mathrm{T}}^{(2)}$ and $A_{\mathrm{T}}^{\mathcal{I}m C\!P}$ , which are sensitive to the virtual photon polarisation, are found to be $-0.045 \pm 0.235 \pm 0.014$ and $0.002 \pm 0.247 \pm 0.016$, respectively. The results are consistent with Standard Model predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.10219v2-abstract-full').style.display = 'none'; document.getElementById('2411.10219v2-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </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">21 pages, 4 figures. All figures and tables, along with any supplementary material and additional information, are available at https://lbfence.cern.ch/alcm/public/analysis/full-details/3433/ (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-2024-030, CERN-EP-2024-276 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.09343">arXiv:2411.09343</a> <span> [<a href="https://arxiv.org/pdf/2411.09343">pdf</a>, <a href="https://arxiv.org/format/2411.09343">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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of $蠁(1020)$ meson production in fixed-target $\textit{p}$Ne collisions at $\sqrt{s_{NN}}$ = 68.5 GeV </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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1127 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="2411.09343v1-abstract-short" style="display: inline;"> The first measurement of $蠁(1020)$ meson production in fixed-target $p$Ne collisions at $\sqrt{s_{NN}}=68.5$ GeV is presented. The $蠁(1020)$ mesons are reconstructed in their $K^{+}K^{-}$ decay in a data sample consisting of proton collisions on neon nuclei at rest, corresponding to an integrated luminosity of $21.7 \pm 1.4$ nb$^{-1}$, collected by the LHCb detector at CERN. The $蠁(1020)$ producti… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.09343v1-abstract-full').style.display = 'inline'; document.getElementById('2411.09343v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.09343v1-abstract-full" style="display: none;"> The first measurement of $蠁(1020)$ meson production in fixed-target $p$Ne collisions at $\sqrt{s_{NN}}=68.5$ GeV is presented. The $蠁(1020)$ mesons are reconstructed in their $K^{+}K^{-}$ decay in a data sample consisting of proton collisions on neon nuclei at rest, corresponding to an integrated luminosity of $21.7 \pm 1.4$ nb$^{-1}$, collected by the LHCb detector at CERN. The $蠁(1020)$ production cross-section in the centre-of-mass rapidity range of $-1.8<y^*<0$ and transverse momentum range of $800<p_{T}<6500$ MeV/c is found to be $蟽=182.7\pm2.7~\text{(stat.)}\pm14.1~\text{(syst)}~渭$b/nucleon. A double-differential measurement of the cross-section is also provided in four regions of rapidity and six regions of transverse momentum of the $蠁(1020)$ meson and compared with the predictions from Pythia and EPOS4, which are found to underestimate the experimental values. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.09343v1-abstract-full').style.display = 'none'; document.getElementById('2411.09343v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/3673/ (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-2024-036, CERN-EP-2024-274 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.07730">arXiv:2411.07730</a> <span> [<a href="https://arxiv.org/pdf/2411.07730">pdf</a>, <a href="https://arxiv.org/ps/2411.07730">ps</a>, <a href="https://arxiv.org/format/2411.07730">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> <p class="title is-5 mathjax"> Study of the light scalar $a_{0}(980)$ through the decay $D^{0} \to a_{0}(980)^-e^{+} 谓_{e}$ with $a_{0}(980)^- \to 畏蟺^-$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (649 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="2411.07730v1-abstract-short" style="display: inline;"> Using 7.93 ${\rm fb^{-1}}$ of $e^+e^-$ collision data collected at a center-of-mass energy of 3.773 ${\rm GeV}$ with the BESIII detector, we present an analysis of the decay $D^{0} \to 畏蟺^- e^+ 谓_{e}$. The branching fraction of the decay $D^{0} \to a_{0}(980)^{-} e^+ 谓_{e}$ with $a_{0}(980)^{-} \to 畏蟺^{-}$ is measured to be $(0.86\pm0.17_{\text{stat}}\pm0.05_{\text{syst}})\times 10^{-4}$. The deca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.07730v1-abstract-full').style.display = 'inline'; document.getElementById('2411.07730v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.07730v1-abstract-full" style="display: none;"> Using 7.93 ${\rm fb^{-1}}$ of $e^+e^-$ collision data collected at a center-of-mass energy of 3.773 ${\rm GeV}$ with the BESIII detector, we present an analysis of the decay $D^{0} \to 畏蟺^- e^+ 谓_{e}$. The branching fraction of the decay $D^{0} \to a_{0}(980)^{-} e^+ 谓_{e}$ with $a_{0}(980)^{-} \to 畏蟺^{-}$ is measured to be $(0.86\pm0.17_{\text{stat}}\pm0.05_{\text{syst}})\times 10^{-4}$. The decay dynamics of this process is studied with a single-pole parameterization of the hadronic form factor and the Flatt茅 formula describing the $a_0(980)$ line shape in the differential decay rate. The product of the form factor $f^{ a_0}_{+}(0)$ and the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cd}|$ is determined for the first time with the result $f^{ a_0}_+(0)|V_{cd}|=0.126\pm0.013_{\rm stat}\pm0.003_{\rm syst}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.07730v1-abstract-full').style.display = 'none'; document.getElementById('2411.07730v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.05669">arXiv:2411.05669</a> <span> [<a href="https://arxiv.org/pdf/2411.05669">pdf</a>, <a href="https://arxiv.org/format/2411.05669">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the $蠄(2S)$ to $J/蠄$ cross-section ratio as a function of centrality in PbPb collisions at $\sqrt{s_{\text{NN}}}$ = 5.02 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1128 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="2411.05669v1-abstract-short" style="display: inline;"> The dissociation of quarkonium states with different binding energies produced in heavy-ion collisions is a powerful probe for investigating the formation and properties of the quark-gluon plasma. The ratio of production cross-sections of $蠄(2S)$ and $J/蠄$ mesons times the ratio of their branching fractions into the dimuon final state is measured as a function of centrality using data collected by… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.05669v1-abstract-full').style.display = 'inline'; document.getElementById('2411.05669v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.05669v1-abstract-full" style="display: none;"> The dissociation of quarkonium states with different binding energies produced in heavy-ion collisions is a powerful probe for investigating the formation and properties of the quark-gluon plasma. The ratio of production cross-sections of $蠄(2S)$ and $J/蠄$ mesons times the ratio of their branching fractions into the dimuon final state is measured as a function of centrality using data collected by the LHCb detector in PbPb collisions at $\sqrt{s_{\text{NN}}}$ = 5.02 TeV. The measured ratio shows no dependence on the collision centrality, and is compared to the latest theory predictions and to the recent measurements in literature. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.05669v1-abstract-full').style.display = 'none'; document.getElementById('2411.05669v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </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-2024-041.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-2024-272, LHCb-PAPER-2024-041 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.03399">arXiv:2411.03399</a> <span> [<a href="https://arxiv.org/pdf/2411.03399">pdf</a>, <a href="https://arxiv.org/format/2411.03399">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> <p class="title is-5 mathjax"> Study of $D_{s1}(2460)^{+}\to D_{s}^{+}蟺^{+}蟺^{-}$ in $B\to {\bar{D}}^{(*)}D_{s}^{+}蟺^{+}蟺^{-}$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1124 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="2411.03399v1-abstract-short" style="display: inline;"> An amplitude analysis of the $D_{s1}(2460)^+\to D_{s}^{+}蟺^{+}蟺^{-}$ transition is performed simultaneously in $B^{0}\to D^{-}D_{s}^{+}蟺^{+}蟺^{-}$, $B^{+}\to{\bar{D}}^{0} D_{s}^{+}蟺^{+}蟺^{-}$, and $B^{0}\to D^{*-}D_{s}^{+}蟺^{+}蟺^{-}$ decays. The study is based on a data sample of proton-proton collisions recorded with the LHCb detector at centre-of-mass energies of $\sqrt{s}=7,8,$ and $13\,$TeV, c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.03399v1-abstract-full').style.display = 'inline'; document.getElementById('2411.03399v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.03399v1-abstract-full" style="display: none;"> An amplitude analysis of the $D_{s1}(2460)^+\to D_{s}^{+}蟺^{+}蟺^{-}$ transition is performed simultaneously in $B^{0}\to D^{-}D_{s}^{+}蟺^{+}蟺^{-}$, $B^{+}\to{\bar{D}}^{0} D_{s}^{+}蟺^{+}蟺^{-}$, and $B^{0}\to D^{*-}D_{s}^{+}蟺^{+}蟺^{-}$ decays. The study is based on a data sample of proton-proton collisions recorded with the LHCb detector at centre-of-mass energies of $\sqrt{s}=7,8,$ and $13\,$TeV, corresponding to a total integrated luminosity of $9\,\rm{fb}^{-1}$. A clear double-peak structure is observed in the $m(蟺^{+}蟺^{-})$ spectrum of the $D_{s1}(2460)^{+}\to D_{s}^{+}蟺^{+}蟺^{-}$ decay. The data can be described either with a model including $f_0(500)$, $f_0(980)$ and $f_2(1270)$ resonances, in which the contributions of $f_0(980)$ and $f_2(1270)$ are unexpectedly large, or with a model including $f_0(500)$, a doubly charged open-charm tetraquark state $T_{c\bar{s}}^{++}$ and its isospin partner $T_{c\bar{s}}^{0}$. If the former is considered implausible, the $T_{c\bar{s}}$ states are observed with high significance, and the data are consistent with isospin symmetry. When imposing isospin constraints between the two $T_{c\bar{s}}$ states, their mass and width are determined to be $2327\pm13\pm13\,$MeV and $96\pm16\,^{+170}_{-23}\,$MeV, respectively, where the first uncertainty is statistical and the second is systematic. The mass is slightly below the $DK$ threshold, and a spin-parity of $0^+$ is favoured with high significance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.03399v1-abstract-full').style.display = 'none'; document.getElementById('2411.03399v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/3280/ (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-2024-033, CERN-EP-2024-264 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.21841">arXiv:2410.21841</a> <span> [<a href="https://arxiv.org/pdf/2410.21841">pdf</a>, <a href="https://arxiv.org/ps/2410.21841">ps</a>, <a href="https://arxiv.org/format/2410.21841">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> <p class="title is-5 mathjax"> Search for $螞$-$\bar螞 $ oscillation in $J/蠄\rightarrow螞\bar螞$ decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (638 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="2410.21841v2-abstract-short" style="display: inline;"> Using $(10087\pm44)\times 10^{6}$ $J/蠄$ decays collected by the BESIII detector at the BEPCII collider, we search for baryon number violation via $螞-\bar螞$ oscillation in the decay $J/蠄\to 螞\bar螞$. No evidence for $螞-\bar螞$ oscillation is observed. The upper limit on the time-integrated probability of $螞-\bar螞$ oscillation is estimated to be $1.4\times 10^{-6}$, corresponding to an oscillation par… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.21841v2-abstract-full').style.display = 'inline'; document.getElementById('2410.21841v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.21841v2-abstract-full" style="display: none;"> Using $(10087\pm44)\times 10^{6}$ $J/蠄$ decays collected by the BESIII detector at the BEPCII collider, we search for baryon number violation via $螞-\bar螞$ oscillation in the decay $J/蠄\to 螞\bar螞$. No evidence for $螞-\bar螞$ oscillation is observed. The upper limit on the time-integrated probability of $螞-\bar螞$ oscillation is estimated to be $1.4\times 10^{-6}$, corresponding to an oscillation parameter less than $2.1\times 10^{-18}~\mathrm{GeV}$ at $90\%$ confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.21841v2-abstract-full').style.display = 'none'; document.getElementById('2410.21841v2-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> 29 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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">8 pages, 2 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.21115">arXiv:2410.21115</a> <span> [<a href="https://arxiv.org/pdf/2410.21115">pdf</a>, <a href="https://arxiv.org/format/2410.21115">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> <p class="title is-5 mathjax"> Measurement of the CKM angle $纬$ in $B^{\pm} \to D K^*(892)^{\pm}$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1111 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="2410.21115v1-abstract-short" style="display: inline;"> Measurements of $CP$ observables and the CKM angle $纬$ are performed in $B^{\pm} \to D K^*(892)^{\pm}$ decays, where $D$ represents a superposition of $D^0$ and $\overline{D}{}^0$ states, using the LHCb dataset collected during Run 1 (2011-2012) and Run 2 (2015-2018). A comprehensive study of this channel is presented with the $D$ meson reconstructed in two-body final states $K^{\pm}蟺^{\mp}$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.21115v1-abstract-full').style.display = 'inline'; document.getElementById('2410.21115v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.21115v1-abstract-full" style="display: none;"> Measurements of $CP$ observables and the CKM angle $纬$ are performed in $B^{\pm} \to D K^*(892)^{\pm}$ decays, where $D$ represents a superposition of $D^0$ and $\overline{D}{}^0$ states, using the LHCb dataset collected during Run 1 (2011-2012) and Run 2 (2015-2018). A comprehensive study of this channel is presented with the $D$ meson reconstructed in two-body final states $K^{\pm}蟺^{\mp}$, $K^+K^-$ and $蟺^+蟺^-$; four-body final states $K^{\pm}蟺^{\mp}蟺^{\pm}蟺^{\mp}$ and $蟺^+蟺^-蟺^+蟺^-$; and three-body final states $K^0_{S} 蟺^+蟺^-$ and $K^0_{S} K^+ K^-$. This analysis includes the first observation of the suppressed $B^{\pm} \to [蟺^+K^-]_D K^{*\pm}$ and $B^{\pm} \to [蟺^+K^-蟺^+蟺^-]_D K^{*\pm}$ decays. The combined result gives $纬=(63\pm 13)^\circ$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.21115v1-abstract-full').style.display = 'none'; document.getElementById('2410.21115v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/3180/ (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-2024-023, CERN-EP-2024-260 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.20063">arXiv:2410.20063</a> <span> [<a href="https://arxiv.org/pdf/2410.20063">pdf</a>, <a href="https://arxiv.org/format/2410.20063">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> <p class="title is-5 mathjax"> Measurement of the branching fraction of $D^+ \to 蟿^+谓_蟿$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (650 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="2410.20063v2-abstract-short" style="display: inline;"> By analyzing $e^{+}e^{-}$ collision data with an integrated luminosity of 7.9~fb$^{-1}$ collected with the BESIII detector at the center-of-mass energy of 3.773~GeV, the branching fraction of $D^+\to蟿^+谓_蟿$ is determined as $\mathcal{B}=(9.9\pm 1.1_\mathrm{stat}\pm 0.5_\mathrm{syst})\times10^{-4}$. Taking the most precise result… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.20063v2-abstract-full').style.display = 'inline'; document.getElementById('2410.20063v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.20063v2-abstract-full" style="display: none;"> By analyzing $e^{+}e^{-}$ collision data with an integrated luminosity of 7.9~fb$^{-1}$ collected with the BESIII detector at the center-of-mass energy of 3.773~GeV, the branching fraction of $D^+\to蟿^+谓_蟿$ is determined as $\mathcal{B}=(9.9\pm 1.1_\mathrm{stat}\pm 0.5_\mathrm{syst})\times10^{-4}$. Taking the most precise result $\mathcal{B}(D^+\to渭^+谓_渭)=(3.981\pm 0.079_\mathrm{stat}\pm0.040_\mathrm{syst})\times10^{-4}$, we determine $R_{蟿/渭} = 螕(D^+\to蟿^+谓_蟿)/螕(D^+\to渭^+谓_渭)= 2.49\pm0.31$, achieving a factor of two improvement in precision compared to the previous BESIII result. This measurement is in agreement with the standard model prediction of lepton flavor universality within one standard deviation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.20063v2-abstract-full').style.display = 'none'; document.getElementById('2410.20063v2-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.18464">arXiv:2410.18464</a> <span> [<a href="https://arxiv.org/pdf/2410.18464">pdf</a>, <a href="https://arxiv.org/ps/2410.18464">ps</a>, <a href="https://arxiv.org/format/2410.18464">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> <p class="title is-5 mathjax"> Search for $畏_c(2S)\to p\bar{p}$ and branching fraction measurements of $蠂_{cJ} \to p\bar{p}$ via $蠄(2S)$ radiative decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (640 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="2410.18464v1-abstract-short" style="display: inline;"> Using $(27.12\pm0.14) \times 10^{8}$ $蠄(2S)$ events collected by the BESIII detector operating at BEPCII, we search for the decay $畏_c(2S)\to p\bar{p}$ via the process $蠄(2S)\to 纬畏_c(2S)$, and only find a signal with a significance of $1.7\,蟽$. The upper limit of the product branching fraction at the 90% confidence level is determined to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.18464v1-abstract-full').style.display = 'inline'; document.getElementById('2410.18464v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.18464v1-abstract-full" style="display: none;"> Using $(27.12\pm0.14) \times 10^{8}$ $蠄(2S)$ events collected by the BESIII detector operating at BEPCII, we search for the decay $畏_c(2S)\to p\bar{p}$ via the process $蠄(2S)\to 纬畏_c(2S)$, and only find a signal with a significance of $1.7\,蟽$. The upper limit of the product branching fraction at the 90% confidence level is determined to be $\mathcal{B}(蠄(2S)\to 纬畏_c(2S))\times \mathcal{B}(畏_c(2S)\to p\bar{p})<2.4\times 10^{-7}$. The branching fractions of $蠂_{cJ}\to p\bar{p}~(J=0,1,2)$ are also measured to be $\mathcal{B}(蠂_{c0}\to p\bar{p})=(2.51\pm0.02\pm0.08)\times 10^{-4}$, $\mathcal{B}(蠂_{c1}\to p\bar{p})=(8.16\pm0.09\pm0.25)\times 10^{-4}$, and $\mathcal{B}(蠂_{c2}\to p\bar{p})=(8.33\pm0.09\pm0.22)\times 10^{-4}$, where the first uncertainty is statistical and the second systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.18464v1-abstract-full').style.display = 'none'; document.getElementById('2410.18464v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.18018">arXiv:2410.18018</a> <span> [<a href="https://arxiv.org/pdf/2410.18018">pdf</a>, <a href="https://arxiv.org/format/2410.18018">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> <p class="title is-5 mathjax"> Measurements of $蠄{(2S)}$ and $蠂_{c1}(3872)$ production within fully reconstructed jets </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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1111 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="2410.18018v1-abstract-short" style="display: inline;"> This paper presents the first measurement of $蠄{(2S)}$ and $蠂_{c1}(3872)$ meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its decay to the $J/蠄$($\rightarrow渭^+渭^-$)$蟺^+蟺^-$ final state in the forward region using proton-proton collision data collected by the LHCb experiment at the center-of-mass-energy of $13 \text{TeV}$ in 2016, corresponding to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.18018v1-abstract-full').style.display = 'inline'; document.getElementById('2410.18018v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.18018v1-abstract-full" style="display: none;"> This paper presents the first measurement of $蠄{(2S)}$ and $蠂_{c1}(3872)$ meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its decay to the $J/蠄$($\rightarrow渭^+渭^-$)$蟺^+蟺^-$ final state in the forward region using proton-proton collision data collected by the LHCb experiment at the center-of-mass-energy of $13 \text{TeV}$ in 2016, corresponding to an integrated luminosity of $1.64 \text{fb}^{-1}$. The fragmentation function, presented as the ratio of the quarkonium-tag transverse momentum to the full jet transverse momentum ($p_{\mathrm{T}}(\text{tag})/p_{\mathrm{T}}(\text{jet})$), is measured differentially in $p_{\mathrm{T}}(\text{jet})$ and $p_{\mathrm{T}}(\text{tag})$ bins. The distributions are separated into promptly produced quarkonia from proton-proton collisions and quarkonia produced from displaced $b$-hadron decays. While the displaced quarkonia fragmentation functions are in general well described by parton-shower predictions, the prompt quarkonium distributions differ significantly from fixed-order non-relativistic QCD (NRQCD) predictions followed by a QCD parton shower. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.18018v1-abstract-full').style.display = 'none'; document.getElementById('2410.18018v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/1618/ (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-2024-021, CERN-EP-2024-241 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.16912">arXiv:2410.16912</a> <span> [<a href="https://arxiv.org/pdf/2410.16912">pdf</a>, <a href="https://arxiv.org/ps/2410.16912">ps</a>, <a href="https://arxiv.org/format/2410.16912">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> <p class="title is-5 mathjax"> Measurement of the branching fractions of the decays $螞_{c}^{+}\rightarrow螞K_{S}^{0}K^{+}$, $螞_{c}^{+}\rightarrow螞K_{S}^{0}蟺^{+}$ and $螞_{c}^{+}\rightarrow螞K^{*+}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (639 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="2410.16912v1-abstract-short" style="display: inline;"> Studies are performed of the Cabibbo-favored decay $螞_{c}^{+}\to螞K_{S}^{0}K^+$ and the singly Cabibbo-suppressed decay $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$, based on a sample of $e^{+}e^{-}$ collision data, corresponding to an integrated luminosity of 4.5 fb$^{-1}$, accumulated at center-of-mass energies between $4599.53$ MeV and $4698.82$ MeV with the BESIII detector. The decay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.16912v1-abstract-full').style.display = 'inline'; document.getElementById('2410.16912v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.16912v1-abstract-full" style="display: none;"> Studies are performed of the Cabibbo-favored decay $螞_{c}^{+}\to螞K_{S}^{0}K^+$ and the singly Cabibbo-suppressed decay $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$, based on a sample of $e^{+}e^{-}$ collision data, corresponding to an integrated luminosity of 4.5 fb$^{-1}$, accumulated at center-of-mass energies between $4599.53$ MeV and $4698.82$ MeV with the BESIII detector. The decay $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$ is observed for the first time. The branching fractions of $螞_{c}^{+}\to螞K_{S}^{0}K^+$ and $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$ are measured to be $(3.04\pm0.30\pm0.16)\times 10^{-3}$ and $(1.73\pm0.27\pm0.10)\times 10^{-3}$, respectively, where the first uncertainties are statistical and the second are systematic. These results correspond to the most precise measurement of these quantities for both decays. Evidence of a $K^{*+}$ contribution in the $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$ decay is found with a statistical significance of $4.7蟽$. The branching fraction of $螞_{c}^{+}\to螞K^{*+}$ is calculated under three possible interference scenarios. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.16912v1-abstract-full').style.display = 'none'; document.getElementById('2410.16912v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.13748">arXiv:2410.13748</a> <span> [<a href="https://arxiv.org/pdf/2410.13748">pdf</a>, <a href="https://arxiv.org/format/2410.13748">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> <p class="title is-5 mathjax"> Test of lepton flavour universality with $B_s^0 \rightarrow 蠁\ell^+\ell^-$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1124 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="2410.13748v1-abstract-short" style="display: inline;"> Lepton flavour universality in rare $b\rightarrow s$ transitions is tested for the first time using $B_s^0$ meson decays. The measurements are performed using $pp$ collision data collected by the LHCb experiment between 2011 and 2018, corresponding to a total integrated luminosity of 9$\,{\rm fb}^{-1}$. Branching fraction ratios between the $B_s^0 \rightarrow 蠁e^+e^-$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13748v1-abstract-full').style.display = 'inline'; document.getElementById('2410.13748v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.13748v1-abstract-full" style="display: none;"> Lepton flavour universality in rare $b\rightarrow s$ transitions is tested for the first time using $B_s^0$ meson decays. The measurements are performed using $pp$ collision data collected by the LHCb experiment between 2011 and 2018, corresponding to a total integrated luminosity of 9$\,{\rm fb}^{-1}$. Branching fraction ratios between the $B_s^0 \rightarrow 蠁e^+e^-$ and $B_s^0 \rightarrow 蠁渭^+渭^-$ decays are measured in three regions of dilepton mass squared, $q^2$, with $0.1 < q^2 < 1.1$, $1.1 < q^2 < 6.0$, and $15 < q^2 < 19\,{\rm GeV}^2/c^4$. The results agree with the Standard Model expectation of lepton flavour universality. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13748v1-abstract-full').style.display = 'none'; document.getElementById('2410.13748v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/3513/ (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-2024-032, CERN-EP-2024-255 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.13515">arXiv:2410.13515</a> <span> [<a href="https://arxiv.org/pdf/2410.13515">pdf</a>, <a href="https://arxiv.org/format/2410.13515">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 - Lattice">hep-lat</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Observation of a rare beta decay of the charmed baryon with a Graph Neural Network </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (637 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="2410.13515v1-abstract-short" style="display: inline;"> The study of beta decay of the charmed baryon provides unique insights into the fundamental mechanism of the strong and electro-weak interactions. The $螞_c^+$, being the lightest charmed baryon, undergoes disintegration solely through the charm quark weak decay. Its beta decay provides an ideal laboratory for investigating non-perturbative effects in quantum chromodynamics and for constraining the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13515v1-abstract-full').style.display = 'inline'; document.getElementById('2410.13515v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.13515v1-abstract-full" style="display: none;"> The study of beta decay of the charmed baryon provides unique insights into the fundamental mechanism of the strong and electro-weak interactions. The $螞_c^+$, being the lightest charmed baryon, undergoes disintegration solely through the charm quark weak decay. Its beta decay provides an ideal laboratory for investigating non-perturbative effects in quantum chromodynamics and for constraining the fundamental parameters of the Cabibbo-Kobayashi-Maskawa matrix in weak interaction theory. This article presents the first observation of the Cabibbo-suppressed $螞_c^+$ beta decay into a neutron $螞_c^+ \rightarrow n e^+ 谓_{e}$, based on $4.5~\mathrm{fb}^{-1}$ of electron-positron annihilation data collected with the BESIII detector in the energy region above the $螞^+_c\bar螞^-_c$ threshold. A novel machine learning technique, leveraging Graph Neural Networks, has been utilized to effectively separate signals from dominant backgrounds, particularly $螞_c^+ \rightarrow 螞e^+ 谓_{e}$. This approach has yielded a statistical significance of more than $10蟽$. The absolute branching fraction of $螞_c^+ \rightarrow n e^+ 谓_{e}$ is measured to be $(3.57\pm0.34_{\mathrm{stat}}\pm0.14_{\mathrm{syst}})\times 10^{-3}$. For the first time, the CKM matrix element $\left|V_{cd}\right|$ is extracted via a charmed baryon decay to be $0.208\pm0.011_{\rm exp.}\pm0.007_{\rm LQCD}\pm0.001_{蟿_{螞_c^+}}$. This study provides a new probe to further understand fundamental interactions in the charmed baryon sector, and demonstrates the power of modern machine learning techniques in enhancing experimental capability in high energy physics research. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13515v1-abstract-full').style.display = 'none'; document.getElementById('2410.13515v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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">28 pages, 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.13478">arXiv:2410.13478</a> <span> [<a href="https://arxiv.org/pdf/2410.13478">pdf</a>, <a href="https://arxiv.org/format/2410.13478">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> <p class="title is-5 mathjax"> Observation of $蠂_{c0}\to危^{+}\bar危^{-}畏$ and evidence for $蠂_{c1,2}\to危^{+}\bar危^{-}畏$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (634 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="2410.13478v1-abstract-short" style="display: inline;"> Using $(27.12\pm 0.14)\times10^{8}$ $蠄(3686)$ events collected with the BESIII detector, the decay $蠂_{c0}\to危^{+}\bar危^{-}畏$ is observed for the first time with a statistical significance of $7.0蟽$, and evidence for $蠂_{c1}\to危^{+}\bar危^{-}畏$ and $蠂_{c2}\to危^{+}\bar危^{-}畏$ is found with statistical significances of $4.3蟽$ and $4.6蟽$, respectively. The branching fractions are determined to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13478v1-abstract-full').style.display = 'inline'; document.getElementById('2410.13478v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.13478v1-abstract-full" style="display: none;"> Using $(27.12\pm 0.14)\times10^{8}$ $蠄(3686)$ events collected with the BESIII detector, the decay $蠂_{c0}\to危^{+}\bar危^{-}畏$ is observed for the first time with a statistical significance of $7.0蟽$, and evidence for $蠂_{c1}\to危^{+}\bar危^{-}畏$ and $蠂_{c2}\to危^{+}\bar危^{-}畏$ is found with statistical significances of $4.3蟽$ and $4.6蟽$, respectively. The branching fractions are determined to be $\mathcal{B}(蠂_{c0}\to危^{+}\bar危^{-}畏)=({1.26 \pm 0.20 \pm 0.13}) \times 10^{-4}, ~\mathcal{B}(蠂_{c1}\to危^{+}\bar危^{-}畏)=({5.10 \pm 1.21 \pm 0.67}) \times 10^{-5}$, and $\mathcal{B}(蠂_{c2}\to危^{+}\bar危^{-}畏)=({5.46 \pm 1.18 \pm 0.50}) \times 10^{-5}$, where the first uncertainties are statistical, and the second ones are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13478v1-abstract-full').style.display = 'none'; document.getElementById('2410.13478v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.13368">arXiv:2410.13368</a> <span> [<a href="https://arxiv.org/pdf/2410.13368">pdf</a>, <a href="https://arxiv.org/format/2410.13368">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> <p class="title is-5 mathjax"> Observation of the Singly Cabibbo-Suppressed Decay $螞_c^{+}\to p蟺^0$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (638 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="2410.13368v1-abstract-short" style="display: inline;"> Utilizing 4.5${~\rm{fb}}^{-1}$ of $e^+e^-$ annihilation data collected with the BESIII detector at the BEPCII collider at center-of-mass energies between 4.600 and 4.699 GeV, the first observation of the singly Cabibbo-suppressed decay $螞_c^{+}\to p蟺^0$ is presented, with a statistical significance of $5.4蟽$. The ratio of the branching fractions of $螞_c^{+}\to p蟺^0$ and $螞_c^{+}\to p畏$ is measured… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13368v1-abstract-full').style.display = 'inline'; document.getElementById('2410.13368v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.13368v1-abstract-full" style="display: none;"> Utilizing 4.5${~\rm{fb}}^{-1}$ of $e^+e^-$ annihilation data collected with the BESIII detector at the BEPCII collider at center-of-mass energies between 4.600 and 4.699 GeV, the first observation of the singly Cabibbo-suppressed decay $螞_c^{+}\to p蟺^0$ is presented, with a statistical significance of $5.4蟽$. The ratio of the branching fractions of $螞_c^{+}\to p蟺^0$ and $螞_c^{+}\to p畏$ is measured as $\mathcal{B}(螞_c^{+}\to p蟺^0)/\mathcal{B}(螞_c^{+}\to p畏)=(0.120\pm0.026_{\rm stat.}\pm0.007_{\rm syst.})$. This result resolves the longstanding discrepancy between earlier experimental searches, providing both a decisive conclusion and valuable input for QCD-inspired theoretical models. A sophisticated deep learning approach using a Transformer-based architecture is employed to distinguish the signal from the prevalent hadronic backgrounds, complemented by thorough validation and systematic uncertainty quantification. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13368v1-abstract-full').style.display = 'none'; document.getElementById('2410.13368v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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">9 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.12620">arXiv:2410.12620</a> <span> [<a href="https://arxiv.org/pdf/2410.12620">pdf</a>, <a href="https://arxiv.org/format/2410.12620">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> <p class="title is-5 mathjax"> Search for $e^{+}e^{-} \to 蠁蠂_{c0}$ and $蠁畏_{c2}(1D)$ at center-of-mass energies from 4.47 to 4.95 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (644 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="2410.12620v1-abstract-short" style="display: inline;"> Utilizing a data set of $6.7$ fb$^{-1}$ from electron-positron collisions recorded by the BESIII detector at the BEPCII storage ring, a search is conducted for the processes $e^{+}e^{-} \to 蠁蠂_{c0}$ and $蠁畏_{c2}(1D)$ across center-of-mass energies from 4.47 to 4.95 GeV. In the absence of any significant signals, upper limits are set. These include limits on the Born cross sections for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.12620v1-abstract-full').style.display = 'inline'; document.getElementById('2410.12620v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.12620v1-abstract-full" style="display: none;"> Utilizing a data set of $6.7$ fb$^{-1}$ from electron-positron collisions recorded by the BESIII detector at the BEPCII storage ring, a search is conducted for the processes $e^{+}e^{-} \to 蠁蠂_{c0}$ and $蠁畏_{c2}(1D)$ across center-of-mass energies from 4.47 to 4.95 GeV. In the absence of any significant signals, upper limits are set. These include limits on the Born cross sections for $e^{+}e^{-} \to 蠁蠂_{c0}$, as well as the product of the Born cross section for $e^{+}e^{-} \to 蠁畏_{c2}(1D)$ and a sum of five branching fractions. Furthermore, the product of the electronic width of $Y(4660)$ and the branching fraction of the $Y(4660) \to 蠁蠂_{c0}$, denoted as $螕^{Y(4660)}_{e^{+}e^{-}} \mathcal{B}_{Y(4660) \to 蠁蠂_{c0}}$, is determined to be $< 0.40$ eV at the 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.12620v1-abstract-full').style.display = 'none'; document.getElementById('2410.12620v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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">14 pages, 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.11607">arXiv:2410.11607</a> <span> [<a href="https://arxiv.org/pdf/2410.11607">pdf</a>, <a href="https://arxiv.org/format/2410.11607">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> <p class="title is-5 mathjax"> Observation of $蠂_{cJ}\to p \bar p K^0_S K^- 蟺^+ + c.c.$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (648 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="2410.11607v1-abstract-short" style="display: inline;"> By analyzing $(27.12\pm0.14)\times10^8$ $蠄(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of $蠂_{cJ} \to p \bar{p} K^0_S K^- 蟺^+ +c.c.(J=0, 1, 2)$ are observed for the first time with statistical significances greater than $10蟽$. The branching fractions of these decays are determined to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.11607v1-abstract-full').style.display = 'inline'; document.getElementById('2410.11607v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.11607v1-abstract-full" style="display: none;"> By analyzing $(27.12\pm0.14)\times10^8$ $蠄(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of $蠂_{cJ} \to p \bar{p} K^0_S K^- 蟺^+ +c.c.(J=0, 1, 2)$ are observed for the first time with statistical significances greater than $10蟽$. The branching fractions of these decays are determined to be $\mathcal{B}(蠂_{c0}\to p \bar p K^{0}_{S} K^- 蟺^+ + c.c.)=(2.61\pm0.27\pm0.32)\times10^{-5},$ $\mathcal{B}(蠂_{c1}\to p \bar p K^{0}_{S} K^- 蟺^+ + c.c.)=(4.16\pm0.24\pm0.46)\times10^{-5},$ and $\mathcal{B}(蠂_{c2}\to p \bar p K^{0}_{S} K^- 蟺^+ + c.c.)=(5.63\pm0.28\pm0.46)\times10^{-5}$, respectively. The processes $蠂_{c1,2} \to \bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.$ are also observed, with statistical significances of 5.7$蟽$ and 7.0$蟽$, respectively. Evidence for $蠂_{c0} \to\bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.$ is found with statistical significances of 3.3$蟽$ each. The corresponding branching fractions are determined to be $\mathcal{B}(蠂_{c0}\to \bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.) =(1.61^{+0.68}_{-0.64}\pm0.23)\times10^{-5}$, $\mathcal{B}(蠂_{c1}\to \bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.)=(4.06^{+0.80}_{-0.76}\pm0.52)\times10^{-5}$, and $\mathcal{B}(蠂_{c2}\to \bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.)=(4.09^{+0.87}_{-0.84}\pm0.42)\times10^{-5}$. Here, the first uncertainties are statistical and the second ones are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.11607v1-abstract-full').style.display = 'none'; document.getElementById('2410.11607v1-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> 15 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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">12 pages, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.08603">arXiv:2410.08603</a> <span> [<a href="https://arxiv.org/pdf/2410.08603">pdf</a>, <a href="https://arxiv.org/format/2410.08603">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> <p class="title is-5 mathjax"> Observation of $D^+\to畏^\prime渭^+谓_渭$ and First Study of $D^+\to 畏^\prime \ell^+谓_\ell$ Decay Dynamics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (643 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="2410.08603v1-abstract-short" style="display: inline;"> Using $20.3\,\rm fb^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy 3.773\,GeV with the BESIII detector, we report the first observation of the semileptonic decay $D^+\to 畏^\prime 渭^+谓_渭$ with significance of $8.6蟽$ including systematic uncertainties, and an improved measurement of $D^+\to 畏^\prime e^+谓_e$. The branching fractions of $D^+\to 畏^\prime 渭^+谓_渭$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.08603v1-abstract-full').style.display = 'inline'; document.getElementById('2410.08603v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.08603v1-abstract-full" style="display: none;"> Using $20.3\,\rm fb^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy 3.773\,GeV with the BESIII detector, we report the first observation of the semileptonic decay $D^+\to 畏^\prime 渭^+谓_渭$ with significance of $8.6蟽$ including systematic uncertainties, and an improved measurement of $D^+\to 畏^\prime e^+谓_e$. The branching fractions of $D^+\to 畏^\prime 渭^+谓_渭$ and $D^+\to 畏^\prime e^+谓_e$ are determined to be $(1.92\pm0.28_{\rm stat}\pm 0.08_{\rm syst})\times 10^{-4}$ and $(1.79\pm0.19_{\rm stat}\pm 0.07_{\rm syst})\times 10^{-4}$, respectively. From an analysis of the $D^+\to 畏^\prime \ell^+谓_\ell$ decay dynamics, the product of the hadronic form factor $f_+^{畏^{\prime}}(0)$ and the CKM matrix element $|V_{cd}|$ is measured for the first time, giving $f^{畏^\prime}_+(0)|V_{cd}| = (5.92\pm0.56_{\rm stat}\pm0.13_{\rm syst})\times 10^{-2}$. No evidence for violation of $渭-e$ lepton-flavor universality is found in both the full range and several bins of $\ell^+谓_\ell$ four-momentum transfer. The $畏-畏^\prime$ mixing angle in the quark flavor basis is determined to be $蠁_{\rm P} =(39.8\pm0.8_{\rm stat}\pm0.3_{\rm syst})^\circ$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.08603v1-abstract-full').style.display = 'none'; document.getElementById('2410.08603v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.07626">arXiv:2410.07626</a> <span> [<a href="https://arxiv.org/pdf/2410.07626">pdf</a>, <a href="https://arxiv.org/format/2410.07626">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> <p class="title is-5 mathjax"> Precision Measurement of the Branching Fraction of $D^{+}\to 渭^{+}谓_渭$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (643 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="2410.07626v1-abstract-short" style="display: inline;"> Using $20.3~\mathrm{fb}^{-1}$ of $e^+e^-$ collision data collected at a center-of-mass energy of $E_{\rm cm}=3.773$ GeV with the BESIII detector operating at the BEPCII collider, we determine the branching fraction of the leptonic decay $D^+\to渭^+谓_渭$ to be $(3.981\pm0.079_{\rm stat}\pm0.040_{\rm syst})\times10^{-4}$. Interpreting our measurement with knowledge of the Fermi coupling constant… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.07626v1-abstract-full').style.display = 'inline'; document.getElementById('2410.07626v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.07626v1-abstract-full" style="display: none;"> Using $20.3~\mathrm{fb}^{-1}$ of $e^+e^-$ collision data collected at a center-of-mass energy of $E_{\rm cm}=3.773$ GeV with the BESIII detector operating at the BEPCII collider, we determine the branching fraction of the leptonic decay $D^+\to渭^+谓_渭$ to be $(3.981\pm0.079_{\rm stat}\pm0.040_{\rm syst})\times10^{-4}$. Interpreting our measurement with knowledge of the Fermi coupling constant $G_F$, the masses of the $D^+$ and $渭^+$ as well as the lifetime of the $D^+$, we determine $f_{D^+}|V_{cd}|=(47.53\pm0.48_{\rm stat}\pm0.24_{\rm syst}\pm0.12_{\rm input})~\mathrm{MeV}$. This result is a factor of 2.3 more precise than the previous best measurement. Using the value of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cd}|$ given by the global standard model fit, we obtain the $D^+$ decay constant $f_{D^+}=(211.5\pm2.3_{\rm stat}\pm1.1_{\rm syst}\pm0.8_{\rm input})$ MeV. Alternatively, using the value of $f_{D^+}$ from a precise lattice quantum chromodynamics calculation, we extract $|V_{cd}|=0.2242\pm0.0023_{\rm stat}\pm0.0011_{\rm syst}\pm0.0009_{\rm input}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.07626v1-abstract-full').style.display = 'none'; document.getElementById('2410.07626v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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">9 pages, 2 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.06500">arXiv:2410.06500</a> <span> [<a href="https://arxiv.org/pdf/2410.06500">pdf</a>, <a href="https://arxiv.org/format/2410.06500">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> <p class="title is-5 mathjax"> Search for the radiative decays $D^+\to纬蟻^+$ and $D^+\to纬K^{*+}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (648 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="2410.06500v1-abstract-short" style="display: inline;"> We search for the radiative decays $D^{+} \to 纬蟻^+$ and $D^{+} \to 纬K^{*+}$ using 20.3~fb$^{-1}$ of $e^+e^-$ annihilation data collected at the center-of-mass energy $\sqrt{s}=3.773$ GeV by the BESIII detector operating at the BEPCII collider. No significant signals are observed, and the upper limits on the branching fractions of $D^{+} \to 纬蟻^+$ and $D^{+} \to 纬K^{*+}$ at 90\% confidence level ar… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.06500v1-abstract-full').style.display = 'inline'; document.getElementById('2410.06500v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.06500v1-abstract-full" style="display: none;"> We search for the radiative decays $D^{+} \to 纬蟻^+$ and $D^{+} \to 纬K^{*+}$ using 20.3~fb$^{-1}$ of $e^+e^-$ annihilation data collected at the center-of-mass energy $\sqrt{s}=3.773$ GeV by the BESIII detector operating at the BEPCII collider. No significant signals are observed, and the upper limits on the branching fractions of $D^{+} \to 纬蟻^+$ and $D^{+} \to 纬K^{*+}$ at 90\% confidence level are set to be $1.3\times10^{-5}$ and $1.8\times10^{-5}$, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.06500v1-abstract-full').style.display = 'none'; document.getElementById('2410.06500v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.05736">arXiv:2410.05736</a> <span> [<a href="https://arxiv.org/pdf/2410.05736">pdf</a>, <a href="https://arxiv.org/ps/2410.05736">ps</a>, <a href="https://arxiv.org/format/2410.05736">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> <p class="title is-5 mathjax"> Observation of an axial-vector state in the study of $蠄(3686) \to 蠁畏畏'$ decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (625 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="2410.05736v1-abstract-short" style="display: inline;"> Using (2712.4 $\pm$ 14.3)$\times 10^{6}$ $蠄(3686)$ events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay $蠄(3686) \to 蠁畏畏' $ is performed with the covariant tensor approach. An axial-vector state with a mass near 2.3 $\rm GeV/c^2$ is observed for the first time. Its mass and width are measured to be 2316… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.05736v1-abstract-full').style.display = 'inline'; document.getElementById('2410.05736v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.05736v1-abstract-full" style="display: none;"> Using (2712.4 $\pm$ 14.3)$\times 10^{6}$ $蠄(3686)$ events collected with the BESIII detector at BEPCII, a partial wave analysis of the decay $蠄(3686) \to 蠁畏畏' $ is performed with the covariant tensor approach. An axial-vector state with a mass near 2.3 $\rm GeV/c^2$ is observed for the first time. Its mass and width are measured to be 2316 $\pm 9_{\mathrm{stat}} \pm 30_{\mathrm{syst}}\,\rm MeV/c^2$ and 89 $\pm 15_{\mathrm{stat}} \pm 26_{\mathrm{syst}}\,\rm MeV$, respectively. The product branching fractions of $\mathcal{B}(蠄(3686) \to X(2300) 畏') \mathcal{B}(X(2300)\to 蠁畏)$ and $\mathcal{B}(蠄(3686) \to X(2300) 畏)\mathcal{B}(X(2300)\to 蠁畏')$ are determined to be (4.8 $\pm 1.3_{\mathrm{stat}} \pm 0.7_{\mathrm{syst}})\times 10^{-6}$ and (2.2 $\pm 0.7_{\mathrm{stat}} \pm 0.7_{\mathrm{syst}})\times 10^{-6}$, respectively. The branching fraction $\mathcal{B}(蠄(3686) \to 蠁畏畏')$ is measured for the first time to be (3.14$\pm0.17_{\mathrm{stat}}\pm0.24_{\mathrm{syst}})\times10^{-5}$. The first uncertainties are statistical and the second are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.05736v1-abstract-full').style.display = 'none'; document.getElementById('2410.05736v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.02502">arXiv:2410.02502</a> <span> [<a href="https://arxiv.org/pdf/2410.02502">pdf</a>, <a href="https://arxiv.org/format/2410.02502">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> <p class="title is-5 mathjax"> Measurement of the effective leptonic weak mixing angle </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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1117 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="2410.02502v1-abstract-short" style="display: inline;"> Using $pp$ collision data at $\sqrt{s}=13$ TeV, recorded by the LHCb experiment between 2016 and 2018 and corresponding to an integrated luminosity of $5.4$ fb$^{-1}$, the forward-backward asymmetry in the $pp \to Z/纬^{*} \to 渭^+渭^-$ process is measured. The measurement is carried out in ten intervals of the difference between the muon pseudorapidities, within a fiducial region covering dimuon mas… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.02502v1-abstract-full').style.display = 'inline'; document.getElementById('2410.02502v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.02502v1-abstract-full" style="display: none;"> Using $pp$ collision data at $\sqrt{s}=13$ TeV, recorded by the LHCb experiment between 2016 and 2018 and corresponding to an integrated luminosity of $5.4$ fb$^{-1}$, the forward-backward asymmetry in the $pp \to Z/纬^{*} \to 渭^+渭^-$ process is measured. The measurement is carried out in ten intervals of the difference between the muon pseudorapidities, within a fiducial region covering dimuon masses between $66$ and $116$ GeV, muon pseudorapidities between $2.0$ and $4.5$ and muon transverse momenta above $20$ GeV. These forward-backward asymmetries are compared with predictions, at next-to-leading order in the strong and electroweak couplings. The measured effective leptonic weak mixing angle is $\sin^2胃_{\rm eff}^\ell = 0.23147 \pm 0.00044 \pm 0.00005 \pm 0.00023$, where the first uncertainty is statistical, the second arises from systematic uncertainties associated with the asymmetry measurement, and the third arises from uncertainties in the fit model used to extract $\sin^2胃_{\rm eff}^\ell$ from the asymmetry measurement. This result is based on an arithmetic average of results using the CT18, MSHT20, and NNPDF31 parameterisations of the proton internal structure, and is consistent with previous measurements and with predictions from the global electroweak fit. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.02502v1-abstract-full').style.display = 'none'; document.getElementById('2410.02502v1-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> 3 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/3360/ (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-2024-028, CERN-EP-2024-230 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.02421">arXiv:2410.02421</a> <span> [<a href="https://arxiv.org/pdf/2410.02421">pdf</a>, <a href="https://arxiv.org/format/2410.02421">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> <p class="title is-5 mathjax"> Search for lepton number violating decays of $D_s^+\to h^-h^0e^+e^+$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (650 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="2410.02421v2-abstract-short" style="display: inline;"> Based on 7.33 fb$^{-1}$ of $e^+e^-$ collision data collected by the BESIII detector operating at the BEPCII collider at center-of-mass energies from 4.128 to 4.226 GeV, a search for the Majorana neutrino $谓_m$ is conducted in the lepton-number-violating decays of $D_s^+\to h^-h^0e^+e^+$. Here, $h^-$ represents a $K^-$ or $蟺^-$, and $h^0$ represents a $蟺^0$, $K_S^0$ or $蠁$. No significant signal is… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.02421v2-abstract-full').style.display = 'inline'; document.getElementById('2410.02421v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.02421v2-abstract-full" style="display: none;"> Based on 7.33 fb$^{-1}$ of $e^+e^-$ collision data collected by the BESIII detector operating at the BEPCII collider at center-of-mass energies from 4.128 to 4.226 GeV, a search for the Majorana neutrino $谓_m$ is conducted in the lepton-number-violating decays of $D_s^+\to h^-h^0e^+e^+$. Here, $h^-$ represents a $K^-$ or $蟺^-$, and $h^0$ represents a $蟺^0$, $K_S^0$ or $蠁$. No significant signal is observed, and the upper limits of their branching fractions at the 90\% confidence level are determined to be $\mathcal{B}(D_s^+\to 蠁蟺^-e^+e^+) < 6.9 \times 10^{-5}$, $\mathcal{B}(D_s^+\to 蠁K^-e^+e^+) < 9.9 \times 10^{-5}$, $\mathcal{B}(D_s^+\to K_S^0蟺^-e^+e^+) < 1.3 \times 10^{-5}$, $\mathcal{B}(D_s^+\to K_S^0K^-e^+e^+) < 2.9 \times 10^{-5}$, $\mathcal{B}(D_s^+\to 蟺^-蟺^0e^+e^+) < 2.9 \times 10^{-5}$ and $\mathcal{B}(D_s^+\to K^-蟺^0e^+e^+) < 3.4 \times 10^{-5}$. The Majorana neutrino is searched for with different mass assumptions within the range [0.20, 0.80] GeV$/c^2$ in the decay of $D_s^+\to蠁e^+谓_m$ with $谓_m\to蟺^-e^+$, and the upper limits of the branching fractions at the 90\% confidence level are at the level of $10^{-5}-10^{-2}$, depending on the mass of the Majorana neutrino. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.02421v2-abstract-full').style.display = 'none'; document.getElementById('2410.02421v2-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> 20 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.17209">arXiv:2409.17209</a> <span> [<a href="https://arxiv.org/pdf/2409.17209">pdf</a>, <a href="https://arxiv.org/format/2409.17209">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> <p class="title is-5 mathjax"> Search for $B_{(s)}^{*0}\to渭^+渭^-$ in $B_c^+\to蟺^+渭^+渭^-$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1113 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="2409.17209v1-abstract-short" style="display: inline;"> A search for the very rare $B^{*0}\to渭^+渭^-$ and $B_{s}^{*0}\to渭^+渭^-$ decays is conducted by analysing the $B_c^+\to 蟺^+渭^+渭^-$ process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9$\text{\,fb}^{-1}$. The signal signatures correspond to simultaneous peaks in the $渭^+渭^-$ and $蟺^+渭^+渭^-$ invari… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.17209v1-abstract-full').style.display = 'inline'; document.getElementById('2409.17209v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.17209v1-abstract-full" style="display: none;"> A search for the very rare $B^{*0}\to渭^+渭^-$ and $B_{s}^{*0}\to渭^+渭^-$ decays is conducted by analysing the $B_c^+\to 蟺^+渭^+渭^-$ process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9$\text{\,fb}^{-1}$. The signal signatures correspond to simultaneous peaks in the $渭^+渭^-$ and $蟺^+渭^+渭^-$ invariant masses. No evidence for an excess of events over background is observed for either signal decay mode. Upper limits at the $90\%$ confidence level are set on the branching fractions relative to that for $B_c^+\to J\mskip -3mu/\mskip -2mu蠄蟺^+$ decays, \begin{align*} {\cal R}_{B^{*0}(渭^+渭^-)蟺^+/J\mskip -3mu/\mskip -2mu蠄蟺^+} &< 3.8\times 10^{-5}\ \text{ and } {\cal R}_{B_{s}^{*0}(渭^+渭^-)蟺^+/J\mskip -3mu/\mskip -2mu蠄蟺^+} &< 5.0\times 10^{-5}\,. \end{align*} <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.17209v1-abstract-full').style.display = 'none'; document.getElementById('2409.17209v1-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/1796/ (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-2024-220, LHCb-PAPER-2024-026 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.15044">arXiv:2409.15044</a> <span> [<a href="https://arxiv.org/pdf/2409.15044">pdf</a>, <a href="https://arxiv.org/ps/2409.15044">ps</a>, <a href="https://arxiv.org/format/2409.15044">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> <p class="title is-5 mathjax"> Search for $D^0\to K^-畏e^+谓_e$, $D^+\to K_S^0 畏e^+谓_e$ and $D^+\to 畏畏e^+谓_e$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (634 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="2409.15044v3-abstract-short" style="display: inline;"> By analyzing $e^+e^-$ annihilation data corresponding to an integrated luminosity of 7.93 fb$^{-1}$, collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we search for the semileptonic decays $D^0\to K^-畏e^+谓_e$, $D^+\to K_S^0 畏e^+谓_e$ and $D^+\to 畏畏e^+谓_e$ for the first time. We present evidence for $D^0\to K^-畏e^+谓_e$ with a significance of $3.3蟽$. The branching fraction… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.15044v3-abstract-full').style.display = 'inline'; document.getElementById('2409.15044v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.15044v3-abstract-full" style="display: none;"> By analyzing $e^+e^-$ annihilation data corresponding to an integrated luminosity of 7.93 fb$^{-1}$, collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we search for the semileptonic decays $D^0\to K^-畏e^+谓_e$, $D^+\to K_S^0 畏e^+谓_e$ and $D^+\to 畏畏e^+谓_e$ for the first time. We present evidence for $D^0\to K^-畏e^+谓_e$ with a significance of $3.3蟽$. The branching fraction of $D^0\to K^-畏e^+谓_e$ is measured to be $(0.84_{-0.34}^{+0.29}\pm0.22)\times 10^{-4}$. Here, the first uncertainties are statistical and the second ones are systematic. No significant signals are observed for the decays $D^+\to K_S^0 畏e^+谓_e$ and $D^+\to 畏畏e^+谓_e$ and we set the upper limits on their branching fractions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.15044v3-abstract-full').style.display = 'none'; document.getElementById('2409.15044v3-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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">10 pages,4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.12629">arXiv:2409.12629</a> <span> [<a href="https://arxiv.org/pdf/2409.12629">pdf</a>, <a href="https://arxiv.org/format/2409.12629">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> <p class="title is-5 mathjax"> Analysis of $\it螞^\mathrm{0}_b \rightarrow pK^-渭^+渭^-$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1114 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="2409.12629v1-abstract-short" style="display: inline;"> The differential branching fraction and angular coefficients of \ensuremath{\it螞^\mathrm{0}_b \rightarrow pK^-渭^+渭^-}\xspace decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9$\aunit{fb}^{-1}$ of integrated luminosity collected with the $\mbox{LHCb}$ detector between 2011 and 2018. The data are consistent with rec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.12629v1-abstract-full').style.display = 'inline'; document.getElementById('2409.12629v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.12629v1-abstract-full" style="display: none;"> The differential branching fraction and angular coefficients of \ensuremath{\it螞^\mathrm{0}_b \rightarrow pK^-渭^+渭^-}\xspace decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9$\aunit{fb}^{-1}$ of integrated luminosity collected with the $\mbox{LHCb}$ detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of $\it螞$ resonances with different spin-parity quantum numbers. The angular coefficients show a pattern of vector--axial vector interference that is a characteristic of the type of flavour-changing neutral-current transition relevant for these decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.12629v1-abstract-full').style.display = 'none'; document.getElementById('2409.12629v1-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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/3264.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-2024-212, LHCb-PAPER-2024-024 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.07197">arXiv:2409.07197</a> <span> [<a href="https://arxiv.org/pdf/2409.07197">pdf</a>, <a href="https://arxiv.org/format/2409.07197">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> <p class="title is-5 mathjax"> Measurements of the $CP$-even fractions of $D^0\to蟺^{+}蟺^{-}蟺^{0}$ and $D^0\to K^{+}K^{-}蟺^{0}$ at BESIII </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (648 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="2409.07197v1-abstract-short" style="display: inline;"> The $CP$-even fractions ($F_{+}$) of the decays $D^0\to蟺^{+}蟺^{-}蟺^{0}$ and $D^0\to K^{+}K^{-}蟺^{0}$ are measured with a quantum-correlated $蠄(3770)\to D\bar{D}$ data sample collected by the BESIII experiment corresponding to an integrated luminosity of 7.93 $\mathrm{fb}^{-1}$. The results are $F_{+}^{蟺^{+}蟺^{-}蟺^{0}}=0.9406\pm0.0036\pm0.0021$ and $F_{+}^{K^{+}K^{-}蟺^{0}}=0.631\pm0.014\pm0.011$, w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.07197v1-abstract-full').style.display = 'inline'; document.getElementById('2409.07197v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.07197v1-abstract-full" style="display: none;"> The $CP$-even fractions ($F_{+}$) of the decays $D^0\to蟺^{+}蟺^{-}蟺^{0}$ and $D^0\to K^{+}K^{-}蟺^{0}$ are measured with a quantum-correlated $蠄(3770)\to D\bar{D}$ data sample collected by the BESIII experiment corresponding to an integrated luminosity of 7.93 $\mathrm{fb}^{-1}$. The results are $F_{+}^{蟺^{+}蟺^{-}蟺^{0}}=0.9406\pm0.0036\pm0.0021$ and $F_{+}^{K^{+}K^{-}蟺^{0}}=0.631\pm0.014\pm0.011$, where the first uncertainties are statistical and the second systematic. These measurements are consistent with the previous determinations, and the uncertainties for $F_{+}^{蟺^{+}蟺^{-}蟺^{0}}$ and $F_{+}^{K^{+}K^{-}蟺^{0}}$ are reduced by factors of 3.9 and 2.6, respectively. The reported results provide important inputs for the precise measurement of the angle $纬$ of the Cabibbo-Kobayashi-Maskawa matrix and indirect $CP$ violation in charm mixing. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.07197v1-abstract-full').style.display = 'none'; document.getElementById('2409.07197v1-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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">19 pages, 8 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.05440">arXiv:2409.05440</a> <span> [<a href="https://arxiv.org/pdf/2409.05440">pdf</a>, <a href="https://arxiv.org/format/2409.05440">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> <p class="title is-5 mathjax"> First determination of the spin-parity of $螢_{c}(3055)^{+,0}$ baryons </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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1109 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="2409.05440v1-abstract-short" style="display: inline;"> The ${螢_{b}^{0(-)}\to螢_{c}(3055)^{+(0)}(\to D^{+(0)}螞)蟺^{-}}$ decay chains are observed, and the spin-parity of $螢_{c}(3055)^{+(0)}$ baryons is determined for the first time. The measurement is performed using proton-proton collision data at a center-of-mass energy of $\sqrt{s}=13\,\text{TeV}$, corresponding to an integrated luminosity of $5.4\,\text{fb}^{-1}$, recorded by the~$\text{LHCb}$ experi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.05440v1-abstract-full').style.display = 'inline'; document.getElementById('2409.05440v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.05440v1-abstract-full" style="display: none;"> The ${螢_{b}^{0(-)}\to螢_{c}(3055)^{+(0)}(\to D^{+(0)}螞)蟺^{-}}$ decay chains are observed, and the spin-parity of $螢_{c}(3055)^{+(0)}$ baryons is determined for the first time. The measurement is performed using proton-proton collision data at a center-of-mass energy of $\sqrt{s}=13\,\text{TeV}$, corresponding to an integrated luminosity of $5.4\,\text{fb}^{-1}$, recorded by the~$\text{LHCb}$ experiment between 2016 and 2018. The spin-parity of the $螢_{c}(3055)^{+(0)}$ baryons is determined to be $3/2^{+}$ with a significance of more than $6.5蟽$ ($3.5蟽$) compared to all other tested hypotheses. The up-down asymmetries of the ${螢_{b}^{0(-)}\to螢_{c}(3055)^{+(0)}蟺^{-}}$ transitions are measured to be $-0.92\pm0.10\pm0.05$ ($-0.92\pm0.16\pm0.22$), consistent with maximal parity violation, where the first uncertainty is statistical and the second is systematic. These results support the hypothesis that the $螢_{c}(3055)^{+(0)}$ baryons correspond to the first $D$-wave $位$-mode excitation of the $螢_{c}$ flavor triplet. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.05440v1-abstract-full').style.display = 'none'; document.getElementById('2409.05440v1-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/1603 (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-2024-018, CERN-EP-2024-215 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.04276">arXiv:2409.04276</a> <span> [<a href="https://arxiv.org/pdf/2409.04276">pdf</a>, <a href="https://arxiv.org/ps/2409.04276">ps</a>, <a href="https://arxiv.org/format/2409.04276">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> <p class="title is-5 mathjax"> Study of the decay $D^0\rightarrow 蟻(770)^-e^+谓_e$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (646 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="2409.04276v1-abstract-short" style="display: inline;"> We present a study of the semileptonic decay $D^0\rightarrow 蟺^-蟺^0e^{+}谓_{e}$ using an $e^+e^-$ annihilation data sample of $7.93~\mathrm{fb}^{-1}$ collected at the center-of-mass energy of 3.773 GeV with the BESIII detector. The branching fraction of $D^0\to 蟻(770)^-e^+谓_e$ is measured to be $(1.439 \pm 0.033(\rm stat.) \pm 0.027(\rm syst.)) \times10^{-3}$, which is a factor 1.6 more precise tha… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.04276v1-abstract-full').style.display = 'inline'; document.getElementById('2409.04276v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.04276v1-abstract-full" style="display: none;"> We present a study of the semileptonic decay $D^0\rightarrow 蟺^-蟺^0e^{+}谓_{e}$ using an $e^+e^-$ annihilation data sample of $7.93~\mathrm{fb}^{-1}$ collected at the center-of-mass energy of 3.773 GeV with the BESIII detector. The branching fraction of $D^0\to 蟻(770)^-e^+谓_e$ is measured to be $(1.439 \pm 0.033(\rm stat.) \pm 0.027(\rm syst.)) \times10^{-3}$, which is a factor 1.6 more precise than previous measurements. By performing an amplitude analysis, we measure the hadronic form-factor ratios of $D^0\to 蟻(770)^-e^+谓_e$ at $q^2=0$ assuming the single-pole-dominance parametrization: $r_{V}=V(0)/A_1(0)=1.548\pm0.079(\rm stat.)\pm0.041(\rm syst.)$ and $r_{2}=A_2(0)/A_1(0)=0.823\pm0.056(\rm stat.)\pm0.026(\rm syst.)$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.04276v1-abstract-full').style.display = 'none'; document.getElementById('2409.04276v1-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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">12 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.03496">arXiv:2409.03496</a> <span> [<a href="https://arxiv.org/pdf/2409.03496">pdf</a>, <a href="https://arxiv.org/format/2409.03496">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> <p class="title is-5 mathjax"> Measurement of exclusive $J/蠄$ and $蠄(2S)$ production at $\sqrt{s}=13$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1072 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="2409.03496v2-abstract-short" style="display: inline;"> Measurements are presented of the cross-section for the central exclusive production of $J/蠄\to渭^+渭^-$ and $蠄(2S)\to渭^+渭^-$ processes in proton-proton collisions at $\sqrt{s} = 13 $ TeV with 2016-2018 data. They are performed by requiring both muons to be in the LHCb acceptance (with pseudorapidity $2<畏_{渭^\pm} < 4.5$) and mesons in the rapidity range $2.0 < y < 4.5$. The integrated cross-section… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03496v2-abstract-full').style.display = 'inline'; document.getElementById('2409.03496v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.03496v2-abstract-full" style="display: none;"> Measurements are presented of the cross-section for the central exclusive production of $J/蠄\to渭^+渭^-$ and $蠄(2S)\to渭^+渭^-$ processes in proton-proton collisions at $\sqrt{s} = 13 $ TeV with 2016-2018 data. They are performed by requiring both muons to be in the LHCb acceptance (with pseudorapidity $2<畏_{渭^\pm} < 4.5$) and mesons in the rapidity range $2.0 < y < 4.5$. The integrated cross-section results are \begin{equation*} 蟽_{J/蠄\to渭^+渭^-}(2.0<y_{J/蠄}<4.5,2.0<畏_{渭^\pm} < 4.5) = 400 \pm 2 \pm 5 \pm 12 \,{\rm pb}\,, \end{equation*} \begin{equation*} 蟽_{蠄(2S)\to渭^+渭^-}(2.0<y_{蠄(2S)}<4.5,2.0<畏_{渭^\pm} < 4.5) = 9.40 \pm 0.15 \pm 0.13 \pm 0.27 \,{\rm pb}\,, \end{equation*} where the uncertainties are statistical, systematic and due to the luminosity determination. In addition, a measurement of the ratio of $蠄(2S)$ and $J/蠄$ cross-sections, at an average photon-proton centre-of-mass energy of 1 TeV, is performed, giving \begin{equation*} \frac{蟽_{蠄(2S)}}{蟽_{J/蠄}} = 0.1763 \pm 0.0029 \pm 0.0008 \pm 0.0039 \,, \end{equation*} where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the involved branching fractions. For the first time, the dependence of the $J/蠄$ and $蠄(2S)$ cross-sections on the total transverse momentum transfer is determined in $pp$ collisions and is found consistent with the behaviour observed in electron-proton collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03496v2-abstract-full').style.display = 'none'; document.getElementById('2409.03496v2-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/1801</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2024-012, CERN-EP-2024-213 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.03009">arXiv:2409.03009</a> <span> [<a href="https://arxiv.org/pdf/2409.03009">pdf</a>, <a href="https://arxiv.org/format/2409.03009">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> <p class="title is-5 mathjax"> Measurement of $CP$ violation in ${B^0}\rightarrow{D^{+}D^{-}}$ and ${B^{0}_{s}}\rightarrow{D^{+}_{s}D^{-}_{s}}$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1115 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="2409.03009v1-abstract-short" style="display: inline;"> A time-dependent, flavour-tagged measurement of $CP$ violation is performed with ${B^0}\rightarrow{D^{+}D^{-}}$ and ${B^{0}_{s}}\rightarrow{D^{+}_{s}D^{-}_{s}}$ decays, using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 6 fb$^{-1}$. In ${B^0}\rightarrow{D^{+}D^{-}}$ decays the $CP$-violation parame… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03009v1-abstract-full').style.display = 'inline'; document.getElementById('2409.03009v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.03009v1-abstract-full" style="display: none;"> A time-dependent, flavour-tagged measurement of $CP$ violation is performed with ${B^0}\rightarrow{D^{+}D^{-}}$ and ${B^{0}_{s}}\rightarrow{D^{+}_{s}D^{-}_{s}}$ decays, using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 6 fb$^{-1}$. In ${B^0}\rightarrow{D^{+}D^{-}}$ decays the $CP$-violation parameters are measured to be \begin{align} S_{D^{+}D^{-}} & = -0.552 \pm 0.100\,\text{(stat)} \pm 0.010\,\text{(syst)}, \nonumber \newline C_{D^{+}D^{-}} & = \phantom{-}0.128 \pm0.103\,\text{(stat)} \pm 0.010\,\text{(syst)}. \nonumber \end{align} In $B^{0}_{s} \rightarrow D^{+}_{s}D^{-}_{s}$ decays the $CP$-violating parameter formulation in terms of $蠁_{s}$ and $|位|$ results in \begin{align} 蠁_{s} & = -0.086 \pm 0.106 \,\text{(stat)} \pm 0.028\,\text{(syst)} \,\text{rad}, \nonumber \newline |位_{D^{+}_{s}D^{-}_{s}}| & = \phantom{-}1.145 \pm 0.126\,\text{(stat)} \pm 0.031\,\text{(syst)}. \nonumber \end{align} These results represent the most precise single measurement of the $CP$-violation parameters in their respective channels. For the first time in a single measurement, $CP$ symmetry is observed to be violated in ${B^0}\rightarrow{D^{+}D^{-}}$ decays with a significance exceeding six standard deviations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03009v1-abstract-full').style.display = 'none'; document.getElementById('2409.03009v1-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> 4 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/3262/ (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-2024-027, CERN-EP-2024-217 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.02759">arXiv:2409.02759</a> <span> [<a href="https://arxiv.org/pdf/2409.02759">pdf</a>, <a href="https://arxiv.org/format/2409.02759">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> <p class="title is-5 mathjax"> Measurement of $\it螞_\it{b}^0$, $\it螞_\it{c}^+$ and $\it螞$ decay parameters using $\it螞_\it{b}^0 \to \it螞_\it{c}^+ h^-$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1103 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="2409.02759v1-abstract-short" style="display: inline;"> A comprehensive study of the angular distributions in the bottom-baryon decays $\it螞^\mathrm{0}_b\to\it螞_c^+ h^-(h=蟺, K)$, followed by $\it螞_c^+\to\it螞 h^+$ with $\it螞\to \it{p} 蟺^-$ or $\it螞_c^+\to\it{p}\it{K}^0_\mathrm{S}$ decays, is performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of $9~\mathrm{fb}^{-1}$ collected by the LHCb experiment at cent… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.02759v1-abstract-full').style.display = 'inline'; document.getElementById('2409.02759v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.02759v1-abstract-full" style="display: none;"> A comprehensive study of the angular distributions in the bottom-baryon decays $\it螞^\mathrm{0}_b\to\it螞_c^+ h^-(h=蟺, K)$, followed by $\it螞_c^+\to\it螞 h^+$ with $\it螞\to \it{p} 蟺^-$ or $\it螞_c^+\to\it{p}\it{K}^0_\mathrm{S}$ decays, is performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of $9~\mathrm{fb}^{-1}$ collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 $\mathrm{Te\kern -0.1em V}$. The decay parameters and the associated charge-parity ($C\!P$) asymmetries are measured, with no significant $C\!P$ violation observed. For the first time, the $\it螞^\mathrm{0}_b \to \it螞_c^+ h^-$ decay parameters are measured. The most precise measurements of the decay parameters $伪, 尾$ and $纬$ are obtained for $\it螞_c^+$ decays and an independent measurement of the decay parameters for the strange-baryon $\it螞$ decay is provided. The results deepen our understanding of weak decay dynamics in baryon decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.02759v1-abstract-full').style.display = 'none'; document.getElementById('2409.02759v1-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> 4 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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-2024-017.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-2024-017, CERN-EP-2024-200 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.02578">arXiv:2409.02578</a> <span> [<a href="https://arxiv.org/pdf/2409.02578">pdf</a>, <a href="https://arxiv.org/format/2409.02578">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> <p class="title is-5 mathjax"> Search for the massless dark photon with $D^0\to蠅纬'$ and $D^0\to纬纬'$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (648 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="2409.02578v2-abstract-short" style="display: inline;"> Using $7.9~\rm{fb^{-1}}$ of $e^+e^-$ collision data collected at $\sqrt{s}=3.773$ GeV with the BESIII detector at the BEPCII collider, we search for the massless dark photon with the flavor-changing neutral current processes $D^0\to蠅纬'$ and $D^0\to纬纬'$ for the first time. No significant signals are observed, and the upper limits at the 90% confidence level on the massless dark photon branching fra… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.02578v2-abstract-full').style.display = 'inline'; document.getElementById('2409.02578v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.02578v2-abstract-full" style="display: none;"> Using $7.9~\rm{fb^{-1}}$ of $e^+e^-$ collision data collected at $\sqrt{s}=3.773$ GeV with the BESIII detector at the BEPCII collider, we search for the massless dark photon with the flavor-changing neutral current processes $D^0\to蠅纬'$ and $D^0\to纬纬'$ for the first time. No significant signals are observed, and the upper limits at the 90% confidence level on the massless dark photon branching fraction are set to be $1.1\times10^{-5}$ and $2.0\times10^{-6}$ for $D^0\to蠅纬'$ and $D^0\to纬纬'$, respectively. These results provide the most stringent constraint on the new physics energy scale associated with $cu纬'$ coupling in the world, with the new physics energy scale related parameter $|\mathbb{C}|^2+|\mathbb{C}_5|^2<8.2\times10^{-17}~\rm{GeV}^{-2}$ at the 90% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.02578v2-abstract-full').style.display = 'none'; document.getElementById('2409.02578v2-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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">10 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.01419">arXiv:2409.01419</a> <span> [<a href="https://arxiv.org/pdf/2409.01419">pdf</a>, <a href="https://arxiv.org/format/2409.01419">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> <p class="title is-5 mathjax"> Study of $D^{+} \to K_{S}^{0}K^{*}(892)^{+}$ in $D^{+} \to K_{S}^{0} K_{S}^{0} 蟺^{+}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (638 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="2409.01419v1-abstract-short" style="display: inline;"> Using a data sample of $e^+e^-$ collisions corresponding to an integrated luminosity of 7.93 $\rm fb^{-1}$ collected with the BESIII detector at the center-of-mass energy 3.773~GeV, we perform the first amplitude analysis of the decay $D^{+} \to K_{S}^{0} K_{S}^{0} 蟺^{+}$. The absolute branching fraction of $D^{+} \to K_{S}^{0}K_{S}^{0} 蟺^{+}$ is measured to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.01419v1-abstract-full').style.display = 'inline'; document.getElementById('2409.01419v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.01419v1-abstract-full" style="display: none;"> Using a data sample of $e^+e^-$ collisions corresponding to an integrated luminosity of 7.93 $\rm fb^{-1}$ collected with the BESIII detector at the center-of-mass energy 3.773~GeV, we perform the first amplitude analysis of the decay $D^{+} \to K_{S}^{0} K_{S}^{0} 蟺^{+}$. The absolute branching fraction of $D^{+} \to K_{S}^{0}K_{S}^{0} 蟺^{+}$ is measured to be $(2.97 \pm 0.09_{\rm stat.} \pm 0.05_{\rm syst.})\times10^{-3}$. The dominant intermediate process is $D^{+} \to K_{S}^{0}K^{*}(892)^{+}$, whose branching fraction is determined to be $(8.72 \pm 0.28_{\rm stat.} \pm 0.15_{\rm syst.}) \times 10^{-3}$, including all the $K^*(892)^+$ decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.01419v1-abstract-full').style.display = 'none'; document.getElementById('2409.01419v1-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.01414">arXiv:2409.01414</a> <span> [<a href="https://arxiv.org/pdf/2409.01414">pdf</a>, <a href="https://arxiv.org/format/2409.01414">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> <p class="title is-5 mathjax"> Measurement of $C\!P$ violation observables in $D^+\rightarrow K^-K^+蟺^+$ 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1109 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="2409.01414v1-abstract-short" style="display: inline;"> A search for violation of the charge-parity $C\!P$ symmetry in the $D^+\rightarrow K^-K^+蟺^+$ decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4 fb$^{-1}$, collected at a center-of-mass energy of $13$ TeV with the LHCb detector. A novel model-independent technique is used to compare the $D^+$ and $D^-$ phase-space distributions, with instrumental… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.01414v1-abstract-full').style.display = 'inline'; document.getElementById('2409.01414v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.01414v1-abstract-full" style="display: none;"> A search for violation of the charge-parity $C\!P$ symmetry in the $D^+\rightarrow K^-K^+蟺^+$ decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4 fb$^{-1}$, collected at a center-of-mass energy of $13$ TeV with the LHCb detector. A novel model-independent technique is used to compare the $D^+$ and $D^-$ phase-space distributions, with instrumental asymmetries subtracted using the $D^+_{s}\rightarrow K^-K^+蟺^+$ decay as a control channel. The $p$-value for the hypothesis of $C\!P$ conservation is $8.1\%$. The $C\!P$ asymmetry observables $A_{C\!P|S}^{蠁蟺^+} = (0.95 \pm 0.43_{stat} \pm 0.26_{syst})\times 10^{-3}$ and $A_{C\!P|S}^{\overline{K}^{*0}K^+} = (-0.26 \pm 0.56_{ stat} \pm 0.18_{syst})\times 10^{-3}$ are also measured. These results show no evidence of $C\!P$ violation and represent the most sensitive search performed through the phase space of a multibody decay. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.01414v1-abstract-full').style.display = 'none'; document.getElementById('2409.01414v1-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/1616 (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-2024-204, LHCb-PAPER-2024-019 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.00427">arXiv:2409.00427</a> <span> [<a href="https://arxiv.org/pdf/2409.00427">pdf</a>, <a href="https://arxiv.org/format/2409.00427">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(2024)062">10.1007/JHEP11(2024)062 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Born cross sections of $e^+e^-\to螢^0\bar螢^0$ and search for charmonium(-like) states at $\sqrt{s}$ = 3.51-4.95 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (648 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="2409.00427v2-abstract-short" style="display: inline;"> Using $e^+e^-$ collision data collected by the BESIII detector at BEPCII corresponding to an integrated luminosity of 30 $\rm fb^{-1}$, we measure Born cross sections and effective form factors for the process $e^+e^-\to螢^0\bar螢^0$ at forty-five center-of-mass energies between 3.51 and 4.95 GeV. The dressed cross section is fitted, assuming a power-law function plus a charmonium(-like) state, i.e.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.00427v2-abstract-full').style.display = 'inline'; document.getElementById('2409.00427v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.00427v2-abstract-full" style="display: none;"> Using $e^+e^-$ collision data collected by the BESIII detector at BEPCII corresponding to an integrated luminosity of 30 $\rm fb^{-1}$, we measure Born cross sections and effective form factors for the process $e^+e^-\to螢^0\bar螢^0$ at forty-five center-of-mass energies between 3.51 and 4.95 GeV. The dressed cross section is fitted, assuming a power-law function plus a charmonium(-like) state, i.e., $蠄(3770)$, $蠄(4040)$, $蠄(4160)$, $蠄(4230)$, $蠄(4360)$, $蠄(4415)$ or $蠄(4660)$. No significant charmonium(-like) state decaying into $螢^0\bar螢^0$ is observed. Upper limits at the 90% confidence level on the product of the branching fraction and the electronic partial width are provided for each decay. In addition, ratios of the Born cross sections and the effective form factors for $e^+e^-\to螢^0\bar螢^0$ and $e^+e^-\to螢^-\bar螢^+$ are also presented to test isospin symmetry and the vector meson dominance model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.00427v2-abstract-full').style.display = 'none'; document.getElementById('2409.00427v2-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </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">23 pages, 2 tables, 4 figures, consistent with the publication in JHEP05(2024)022</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP11(2024)062 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.17071">arXiv:2408.17071</a> <span> [<a href="https://arxiv.org/pdf/2408.17071">pdf</a>, <a href="https://arxiv.org/format/2408.17071">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> <p class="title is-5 mathjax"> Search for $h_c \to 蟺^+蟺^-J/蠄$ via $蠄(3686)\to 蟺^0h_c$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (653 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="2408.17071v1-abstract-short" style="display: inline;"> Using $(2712.4 \pm 14.3) \times 10^6~蠄$(3686) events collected with the BESIII detector operating at the BEPCII collider, we search for the hadronic transition $h_c \to 蟺^+蟺^-J/蠄$ via $蠄(3686)\to 蟺^0 h_c$. No significant signal is observed. We set the most stringent upper limits to date on the branching fractions $\mathcal{B}(蠄(3686)\to 蟺^0 h_c)\times\mathcal{B}(h_c\to蟺^+蟺^-J/蠄)$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.17071v1-abstract-full').style.display = 'inline'; document.getElementById('2408.17071v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.17071v1-abstract-full" style="display: none;"> Using $(2712.4 \pm 14.3) \times 10^6~蠄$(3686) events collected with the BESIII detector operating at the BEPCII collider, we search for the hadronic transition $h_c \to 蟺^+蟺^-J/蠄$ via $蠄(3686)\to 蟺^0 h_c$. No significant signal is observed. We set the most stringent upper limits to date on the branching fractions $\mathcal{B}(蠄(3686)\to 蟺^0 h_c)\times\mathcal{B}(h_c\to蟺^+蟺^-J/蠄)$ and $\mathcal{B}(h_c \to 蟺^+蟺^-J/蠄)$ at the 90$\%$ confidence level, which are determined to be $6.7\times 10^{-7}$ and $9.4 \times10^{-4}$, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.17071v1-abstract-full').style.display = 'none'; document.getElementById('2408.17071v1-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> 30 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.16654">arXiv:2408.16654</a> <span> [<a href="https://arxiv.org/pdf/2408.16654">pdf</a>, <a href="https://arxiv.org/format/2408.16654">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> <p class="title is-5 mathjax"> Measurement of the Decay $螢^{0}\to螞纬$ with Entangled $螢^{0}\bar螢^{0}$ Pairs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (638 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="2408.16654v2-abstract-short" style="display: inline;"> In this Letter, a systematic study of the weak radiative hyperon decay $螢^{0}\to螞纬$ at an electron-positron collider using entangled $螢^{0}\bar螢^{0}$ pair events is presented. The absolute branching fraction for this decay has been measured for the first time, and is $\left(1.347 \pm 0.066_{\mathrm stat.}\pm0.054_{\mathrm syst.}\right)\times 10^{-3}$. The decay asymmetry parameter, which character… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16654v2-abstract-full').style.display = 'inline'; document.getElementById('2408.16654v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.16654v2-abstract-full" style="display: none;"> In this Letter, a systematic study of the weak radiative hyperon decay $螢^{0}\to螞纬$ at an electron-positron collider using entangled $螢^{0}\bar螢^{0}$ pair events is presented. The absolute branching fraction for this decay has been measured for the first time, and is $\left(1.347 \pm 0.066_{\mathrm stat.}\pm0.054_{\mathrm syst.}\right)\times 10^{-3}$. The decay asymmetry parameter, which characterizes the effect of parity violation in the decay, is determined to be $-0.741 \pm 0.062_{\mathrm stat.}\pm 0.019_{\mathrm syst.}$. The obtained results are consistent with the world average values within the uncertainties, offering valuable insights into the underlying mechanism governing the weak radiative hyperon decays. The charge conjugation parity ($CP$) symmetries of branching fraction and decay asymmetry parameter in the decay are also studied. No statistically significant violation of charge conjugation parity symmetry is observed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16654v2-abstract-full').style.display = 'none'; document.getElementById('2408.16654v2-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> 29 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </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">10 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.16646">arXiv:2408.16646</a> <span> [<a href="https://arxiv.org/pdf/2408.16646">pdf</a>, <a href="https://arxiv.org/format/2408.16646">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> <p class="title is-5 mathjax"> Study of the rare decay $J/蠄\to 渭^+渭^-渭^+渭^-$ </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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1096 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="2408.16646v1-abstract-short" style="display: inline;"> The rare electromagnetic $J/蠄\to 渭^+渭^-渭^+渭^-$ decay is observed with a significance greatly exceeding the discovery threshold, using proton-proton collision data collected by the LHCb experiment during 2016-2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of $5.4\,\text{fb}^{-1}$. The rate of this decay is measured relative to that of the $J/蠄\to 渭^+渭^-$ mode.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16646v1-abstract-full').style.display = 'inline'; document.getElementById('2408.16646v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.16646v1-abstract-full" style="display: none;"> The rare electromagnetic $J/蠄\to 渭^+渭^-渭^+渭^-$ decay is observed with a significance greatly exceeding the discovery threshold, using proton-proton collision data collected by the LHCb experiment during 2016-2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of $5.4\,\text{fb}^{-1}$. The rate of this decay is measured relative to that of the $J/蠄\to 渭^+渭^-$ mode. Using the QED model for the four-muon decay in the efficiency estimation, its branching fraction is determined to be \begin{equation*} {\mathcal{B}}(J/蠄\to 渭^+渭^-渭^+渭^-) = (1.13\pm0.10\pm0.05\pm0.01)\times 10^{-6}, \end{equation*} where the uncertainties are statistical, systematic and due to the uncertainty on the branching fraction of the $J/蠄\to 渭^+渭^-$ decay. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16646v1-abstract-full').style.display = 'none'; document.getElementById('2408.16646v1-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> 29 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/3453 (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-2024-016, CERN-EP-2024-201 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.16279">arXiv:2408.16279</a> <span> [<a href="https://arxiv.org/pdf/2408.16279">pdf</a>, <a href="https://arxiv.org/ps/2408.16279">ps</a>, <a href="https://arxiv.org/format/2408.16279">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> <p class="title is-5 mathjax"> Model-independent determination of the strong-phase difference between $D^0$ and $\bar{D}^0 \to 蟺^+蟺^-蟺^+蟺^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (647 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="2408.16279v2-abstract-short" style="display: inline;"> Measurements of the strong-phase difference between $D^0$ and $\bar{D}^0\to蟺^+蟺^-蟺^+蟺^-$ are performed in bins of phase space. The study exploits a sample of quantum-correlated $D\bar{D}$ mesons collected by the BESIII experiment in $e^+e^-$ collisions at a center-of-mass energy of 3.773~GeV, corresponding to an integrated luminosity of 2.93~fb$^{-1}$. Here, $D$ denotes a neutral charm meson in a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16279v2-abstract-full').style.display = 'inline'; document.getElementById('2408.16279v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.16279v2-abstract-full" style="display: none;"> Measurements of the strong-phase difference between $D^0$ and $\bar{D}^0\to蟺^+蟺^-蟺^+蟺^-$ are performed in bins of phase space. The study exploits a sample of quantum-correlated $D\bar{D}$ mesons collected by the BESIII experiment in $e^+e^-$ collisions at a center-of-mass energy of 3.773~GeV, corresponding to an integrated luminosity of 2.93~fb$^{-1}$. Here, $D$ denotes a neutral charm meson in a superposition of flavor eigenstates. The reported results are valuable for measurements of the $C\!P$-violating phase $纬$ (also denoted $蠁_3$) in $B^\pm \to DK^\pm$, $D \to 蟺^+蟺^-蟺^+蟺^-$ decays, and the binning schemes are designed to provide good statistical sensitivity to this parameter. The expected uncertainty on $纬$ arising from the precision of the strong-phase measurements, when applied to very large samples of $B$-meson decays, is around $1.5^\circ$ or $2^\circ$, depending on the binning scheme. The binned strong-phase parameters are combined to give a value of $F_+^{4蟺} = 0.746 \pm 0.010 \pm 0.004$ for the $C\!P$-even fraction of $D^0 \to 蟺^+蟺^-蟺^+蟺^-$ decays, which is around 30\% more precise than the previous best measurement of this quantity. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16279v2-abstract-full').style.display = 'none'; document.getElementById('2408.16279v2-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.08826">arXiv:2408.08826</a> <span> [<a href="https://arxiv.org/pdf/2408.08826">pdf</a>, <a href="https://arxiv.org/format/2408.08826">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> <p class="title is-5 mathjax"> Search for the rare decay $J/蠄\to 纬D^0+c.c.$ at BESIII </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (642 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="2408.08826v1-abstract-short" style="display: inline;"> Using $(10087\pm44)\times10^6J/蠄$ events collected with the BESIII detector, we search for the rare decay $J/蠄\to 纬D^0+c.c.$ for the first time. No obvious signal is observed and the upper limit on the branching fraction is determined to be ${\cal B}(J/蠄\to 纬D^{0}+c.c.)< 9.1 \times 10^{-8}$ at 90\% confidence level. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.08826v1-abstract-full" style="display: none;"> Using $(10087\pm44)\times10^6J/蠄$ events collected with the BESIII detector, we search for the rare decay $J/蠄\to 纬D^0+c.c.$ for the first time. No obvious signal is observed and the upper limit on the branching fraction is determined to be ${\cal B}(J/蠄\to 纬D^{0}+c.c.)< 9.1 \times 10^{-8}$ at 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.08826v1-abstract-full').style.display = 'none'; document.getElementById('2408.08826v1-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.06677">arXiv:2408.06677</a> <span> [<a href="https://arxiv.org/pdf/2408.06677">pdf</a>, <a href="https://arxiv.org/format/2408.06677">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> <p class="title is-5 mathjax"> Search for $畏_c(2S)\to蠅蠅$ and $蠅蠁$ decays and measurements of $蠂_{cJ}\to蠅蠅$ and $蠅蠁$ in $蠄(2S)$ radiative processes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (643 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="2408.06677v1-abstract-short" style="display: inline;"> Using $(2712\pm 14)$ $\times$ 10$^{6}$ $蠄(2S)$ events collected with the BESIII detector at the BEPCII collider, we search for the decays $畏_{c}(2S)\to蠅蠅$ and $畏_{c}(2S)\to蠅蠁$ via the process $蠄(2S)\to纬畏_{c}(2S)$. Evidence of $畏_{c}(2S)\to蠅蠅$ is found with a statistical significance of $3.2蟽$. The branching fraction is measured to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.06677v1-abstract-full').style.display = 'inline'; document.getElementById('2408.06677v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.06677v1-abstract-full" style="display: none;"> Using $(2712\pm 14)$ $\times$ 10$^{6}$ $蠄(2S)$ events collected with the BESIII detector at the BEPCII collider, we search for the decays $畏_{c}(2S)\to蠅蠅$ and $畏_{c}(2S)\to蠅蠁$ via the process $蠄(2S)\to纬畏_{c}(2S)$. Evidence of $畏_{c}(2S)\to蠅蠅$ is found with a statistical significance of $3.2蟽$. The branching fraction is measured to be $\mathcal{B}(畏_{c}(2S)\to蠅蠅)=(5.65\pm3.77(\rm stat.)\pm5.32(\rm syst.))\times10^{-4}$. No statistically significant signal is observed for the decay $畏_{c}(2S)\to蠅蠁$. The upper limit of the branching fraction at the 90\% confidence level is determined to be $\mathcal{B}(蠄(2S)\to纬畏_{c}(2S),畏_{c}(2S)\to蠅蠁)<2.24\times 10^{-7}$. We also update the branching fractions of $蠂_{cJ}\to 蠅蠅$ and $蠂_{cJ}\to蠅蠁$ decays via the $蠄(2S)\to纬蠂_{cJ}$ transition. The branching fractions are determined to be $\mathcal{B}(蠂_{c0}\to蠅蠅)=(10.63\pm0.11\pm0.46)\times 10^{-4}$, $\mathcal{B}(蠂_{c1}\to蠅蠅)=(6.39\pm0.07\pm0.29)\times 10^{-4}$, $\mathcal{B}(蠂_{c2}\to蠅蠅)=(8.50\pm0.08\pm0.38)\times 10^{-4}$, $\mathcal{B}(蠂_{c0}\to蠅蠁)=(1.18\pm0.03\pm0.05)\times 10^{-4}$, $\mathcal{B}(蠂_{c1}\to蠅蠁)=(2.03\pm0.15\pm0.12)\times 10^{-5}$, and $\mathcal{B}(蠂_{c2}\to蠅蠁)=(9.37\pm1.07\pm0.59)\times 10^{-6}$, where the first uncertainties are statistical and the second are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.06677v1-abstract-full').style.display = 'none'; document.getElementById('2408.06677v1-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.05134">arXiv:2408.05134</a> <span> [<a href="https://arxiv.org/pdf/2408.05134">pdf</a>, <a href="https://arxiv.org/format/2408.05134">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(2024)122">10.1007/JHEP10(2024)122 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of muonic Dalitz decays of $蠂_{b}$ mesons and precise spectroscopy of hidden-beauty 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=Abdelmotteleb%2C+A+S+W">A. S. W. Abdelmotteleb</a>, <a href="/search/hep-ex?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Ackernley%2C+T">T. Ackernley</a>, <a href="/search/hep-ex?searchtype=author&query=Adefisoye%2C+A+A">A. A. Adefisoye</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=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Agapopoulou%2C+C">C. Agapopoulou</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=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=Akiba%2C+K">K. Akiba</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=Aliouche%2C+Z">Z. Aliouche</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=Amalric%2C+R">R. Amalric</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J+L">J. L. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a> , et al. (1114 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="2408.05134v2-abstract-short" style="display: inline;"> The decays of the $蠂_{b1}(1P)$, $蠂_{b2}(1P)$, $蠂_{b1}(2P)$ and $蠂_{b2}(2P)$ mesons into the $违(1S)渭^+渭^-$ final state are observed with a high significance using proton-proton collision data collected with the LHCb detector and corresponding to an integrated luminosity of 9fb$^{-1}$. The newly observed decays together with the $违(2S)\rightarrow 违(1S)蟺^+蟺^-$ and $违(3S)\rightarrow 违(2S)蟺^+蟺^-$ decay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.05134v2-abstract-full').style.display = 'inline'; document.getElementById('2408.05134v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.05134v2-abstract-full" style="display: none;"> The decays of the $蠂_{b1}(1P)$, $蠂_{b2}(1P)$, $蠂_{b1}(2P)$ and $蠂_{b2}(2P)$ mesons into the $违(1S)渭^+渭^-$ final state are observed with a high significance using proton-proton collision data collected with the LHCb detector and corresponding to an integrated luminosity of 9fb$^{-1}$. The newly observed decays together with the $违(2S)\rightarrow 违(1S)蟺^+蟺^-$ and $违(3S)\rightarrow 违(2S)蟺^+蟺^-$ decay modes are used for precision measurements of the mass and mass splittings for the hidden-beauty states. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.05134v2-abstract-full').style.display = 'none'; document.getElementById('2408.05134v2-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </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://lbfence.cern.ch/alcm/public/analysis/full-details/3633</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2024-025,CERN-EP-2024-207 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 10 (2024) 122 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.04422">arXiv:2408.04422</a> <span> [<a href="https://arxiv.org/pdf/2408.04422">pdf</a>, <a href="https://arxiv.org/format/2408.04422">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> <p class="title is-5 mathjax"> Analysis of the dynamics of the decay $D^{+}\to K_{S}^{0} 蟺^{0} e^{+}谓_{e}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (644 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="2408.04422v1-abstract-short" style="display: inline;"> The branching fraction of $D^+\to K_{S}^{0} 蟺^{0}e^+谓_e$ is measured for the first time using $7.93~\mathrm{fb}^{-1}$ of $e^+e^-$ annihilation data collected at the center-of-mass energy $\sqrt{s}=3.773$~GeV with the BESIII detector operating at the BEPCII collider, and is determined to be ${\mathcal B}$($D^+\to K_S^0蟺^0e^+谓_e$) = $(0.881~\pm~0.017_{\rm stat.}~\pm~0.016_{\rm syst.})$\%. Based on a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.04422v1-abstract-full').style.display = 'inline'; document.getElementById('2408.04422v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.04422v1-abstract-full" style="display: none;"> The branching fraction of $D^+\to K_{S}^{0} 蟺^{0}e^+谓_e$ is measured for the first time using $7.93~\mathrm{fb}^{-1}$ of $e^+e^-$ annihilation data collected at the center-of-mass energy $\sqrt{s}=3.773$~GeV with the BESIII detector operating at the BEPCII collider, and is determined to be ${\mathcal B}$($D^+\to K_S^0蟺^0e^+谓_e$) = $(0.881~\pm~0.017_{\rm stat.}~\pm~0.016_{\rm syst.})$\%. Based on an analysis of the $D^+\to K_S^0蟺^0e^+谓_e$ decay dynamics, we observe the $S\text{-}{\rm wave}$ and $P$-wave components with fractions of $f_{S\text{-}{\rm wave}}$ = $(6.13~\pm~0.27_{\rm stat.}~\pm ~0.30_{\rm syst.})\%$ and $f_{\bar K^{*}(892)^0}$ = $(93.88~\pm~0.27_{\rm stat.}~\pm~0.29_{\rm syst.})$\%, respectively. From these results, we obtain the branching fractions ${\mathcal B}$($D^+\to (K_S^0蟺^0)_{S\text{-}{\rm wave}}~e^+谓_e$) = $(5.41~\pm~0.35_{\rm stat.}~\pm~0.37_{\rm syst.})\times10^{-4}$ and ${\mathcal B}$($D^+\to \bar K^{*}(892)^0e^+谓_e$) = $(4.97~\pm~0.11_{\rm stat.}~\pm~0.12_{\rm syst.})$\%. In addition, the hadronic form-factor ratios of $D^{+} \to \bar {K}^{*}(892)^0e^+谓_e$ at $q^2=0$, assuming a single-pole dominance parameterization, are determined to be $r_V=\frac{V(0)}{A_1(0)}= 1.43~\pm~0.07_{\rm stat.}~\pm~0.03_{\rm syst.}$ and $r_2=\frac{A_2(0)}{A_1(0)}=0.72~\pm~0.06_{\rm stat.}~\pm~0.02_{\rm syst.}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.04422v1-abstract-full').style.display = 'none'; document.getElementById('2408.04422v1-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.03531">arXiv:2408.03531</a> <span> [<a href="https://arxiv.org/pdf/2408.03531">pdf</a>, <a href="https://arxiv.org/format/2408.03531">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> <p class="title is-5 mathjax"> Measurement of the Branching Fraction of \boldmath{$蠄(2S) \to 纬蟺^0$} </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (644 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="2408.03531v2-abstract-short" style="display: inline;"> Based on $(2712.4\pm14.1)\times10^{6}~蠄(2S)$ events, 7.9 fb$^{-1}$ $蠄(3773)$ data, and 0.8 fb$^{-1}$ off-resonance data samples collected with the BESIII detector, we measure the branching fraction of $蠄(2S)\rightarrow纬蟺^{0}$ and $e^{+}e^{-}\rightarrow纬蟺^{0}$ form factor at momentum transfers $Q^{2}\sim13$ GeV$^{2}$. The $e^{+}e^{-}\rightarrow纬蟺^{0}$ cross section is fitted with considering the in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.03531v2-abstract-full').style.display = 'inline'; document.getElementById('2408.03531v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.03531v2-abstract-full" style="display: none;"> Based on $(2712.4\pm14.1)\times10^{6}~蠄(2S)$ events, 7.9 fb$^{-1}$ $蠄(3773)$ data, and 0.8 fb$^{-1}$ off-resonance data samples collected with the BESIII detector, we measure the branching fraction of $蠄(2S)\rightarrow纬蟺^{0}$ and $e^{+}e^{-}\rightarrow纬蟺^{0}$ form factor at momentum transfers $Q^{2}\sim13$ GeV$^{2}$. The $e^{+}e^{-}\rightarrow纬蟺^{0}$ cross section is fitted with considering the interference between the $蠄(2S)$ and continuum amplitudes and two solutions are found, ${\cal B}=3.74\times10^{-7}$ with $蠁=3.93$ rad and ${\cal B}=7.87\times10^{-7}$ with $蠁=2.08$ rad. Here, ${\cal B}$ is the branching fraction of $蠄(2S)\rightarrow纬蟺^{0}$ and $蠁$ is the relative phase angle between the $蠄(2S)$ and continuum amplitudes. Due to insufficient off-resonance data, the branching fraction ${\cal B}(蠄(2S)\rightarrow纬蟺^{0})$ is determined to be in the range $[2.7, 9.7]\times10^{-7}$ within one standard deviation of the contour region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.03531v2-abstract-full').style.display = 'none'; document.getElementById('2408.03531v2-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.03205">arXiv:2408.03205</a> <span> [<a href="https://arxiv.org/pdf/2408.03205">pdf</a>, <a href="https://arxiv.org/format/2408.03205">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> <p class="title is-5 mathjax"> Measurement of $危^+$ transverse polarization in $e^+e^-$ collisions at $\sqrt{s} = 3.68-3.71$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (639 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="2408.03205v2-abstract-short" style="display: inline;"> Using $e^+e^-$ collision data collected with the BESIII detector at seven energy points ranging from 3.68 to 3.71 GeV and corresponding to an integrated luminosity of $652.1~{\rm pb^{-1}}$, we present an energy-dependent measurement of the transverse polarization, relative phase and modulus ratio of the electromagnetic form factors of the $危^+$ hyperon in the $e^+e^- \to 危^+ \bar危^-$ reaction. The… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.03205v2-abstract-full').style.display = 'inline'; document.getElementById('2408.03205v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.03205v2-abstract-full" style="display: none;"> Using $e^+e^-$ collision data collected with the BESIII detector at seven energy points ranging from 3.68 to 3.71 GeV and corresponding to an integrated luminosity of $652.1~{\rm pb^{-1}}$, we present an energy-dependent measurement of the transverse polarization, relative phase and modulus ratio of the electromagnetic form factors of the $危^+$ hyperon in the $e^+e^- \to 危^+ \bar危^-$ reaction. These results are helpful to understand the production mechanism of the $危^+$-$\bar危^-$ pairs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.03205v2-abstract-full').style.display = 'none'; document.getElementById('2408.03205v2-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </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">21 pages, 2 tables, 5 figures</span> </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous 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