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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <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/2212.12750">arXiv:2212.12750</a> <span> [<a href="https://arxiv.org/pdf/2212.12750">pdf</a>, <a href="https://arxiv.org/format/2212.12750">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Theory">hep-th</span> </div> </div> <p class="title is-5 mathjax"> Search for effective Lorentz and CPT violation using ZEUS data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=ZEUS+collaboration"> ZEUS collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Abt%2C+I">I. Abt</a>, <a href="/search/hep-ph?searchtype=author&query=Aggarwal%2C+R">R. Aggarwal</a>, <a href="/search/hep-ph?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ph?searchtype=author&query=Behnke%2C+O">O. Behnke</a>, <a href="/search/hep-ph?searchtype=author&query=Bertolin%2C+A">A. Bertolin</a>, <a href="/search/hep-ph?searchtype=author&query=Bloch%2C+I">I. Bloch</a>, <a href="/search/hep-ph?searchtype=author&query=Brock%2C+I">I. Brock</a>, <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N. H. Brook</a>, <a href="/search/hep-ph?searchtype=author&query=Brugnera%2C+R">R. Brugnera</a>, <a href="/search/hep-ph?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/hep-ph?searchtype=author&query=Bussey%2C+P+J">P. J. Bussey</a>, <a href="/search/hep-ph?searchtype=author&query=Caldwell%2C+A">A. Caldwell</a>, <a href="/search/hep-ph?searchtype=author&query=Catterall%2C+C+D">C. D. Catterall</a>, <a href="/search/hep-ph?searchtype=author&query=Chwastowski%2C+J">J. Chwastowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciborowski%2C+J">J. Ciborowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciesielski%2C+R">R. Ciesielski</a>, <a href="/search/hep-ph?searchtype=author&query=Cooper-Sarkar%2C+A+M">A. M. Cooper-Sarkar</a>, <a href="/search/hep-ph?searchtype=author&query=Corradi%2C+M">M. Corradi</a>, <a href="/search/hep-ph?searchtype=author&query=Dementiev%2C+R+K">R. K. Dementiev</a>, <a href="/search/hep-ph?searchtype=author&query=Dusini%2C+S">S. Dusini</a>, <a href="/search/hep-ph?searchtype=author&query=Ferrando%2C+J">J. Ferrando</a>, <a href="/search/hep-ph?searchtype=author&query=Foster%2C+B">B. Foster</a>, <a href="/search/hep-ph?searchtype=author&query=Gallo%2C+E">E. Gallo</a>, <a href="/search/hep-ph?searchtype=author&query=Gangadharan%2C+D">D. Gangadharan</a> , et al. (55 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="2212.12750v1-abstract-short" style="display: inline;"> Lorentz and CPT symmetry in the quark sector of the Standard Model are studied in the context of an effective field theory using ZEUS $e^{\pm} p$ data. Symmetry-violating effects can lead to time-dependent oscillations of otherwise time-independent observables, including scattering cross sections. An analysis using five years of inclusive neutral-current deep inelastic scattering events correspond… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.12750v1-abstract-full').style.display = 'inline'; document.getElementById('2212.12750v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.12750v1-abstract-full" style="display: none;"> Lorentz and CPT symmetry in the quark sector of the Standard Model are studied in the context of an effective field theory using ZEUS $e^{\pm} p$ data. Symmetry-violating effects can lead to time-dependent oscillations of otherwise time-independent observables, including scattering cross sections. An analysis using five years of inclusive neutral-current deep inelastic scattering events corresponding to an integrated HERA luminosity of $372\; \text{pb}^{-1}$ at $\sqrt{s} = 318$ Gev has been performed. No evidence for oscillations in sidereal time has been observed within statistical and systematic uncertainties. Constraints, most for the first time, are placed on 42 coefficients parameterising dominant CPT-even dimension-four and CPT-odd dimension-five spin-independent modifications to the propagation and interaction of light quarks. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.12750v1-abstract-full').style.display = 'none'; document.getElementById('2212.12750v1-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 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </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">36 pages, 12 figures. Additional material included as an ancillary file for this arXiv entry</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY--22--107 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.13343">arXiv:2206.13343</a> <span> [<a href="https://arxiv.org/pdf/2206.13343">pdf</a>, <a href="https://arxiv.org/format/2206.13343">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP12(2022)164">10.1007/JHEP12(2022)164 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the cross-section ratio $蟽_{蠄(2S )}/蟽_{J/蠄(1S )}$ in exclusive photoproduction at HERA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=ZEUS+Collaboration"> ZEUS Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Abt%2C+I">I. Abt</a>, <a href="/search/hep-ph?searchtype=author&query=Adamus%2C+M">M. Adamus</a>, <a href="/search/hep-ph?searchtype=author&query=Aggarwal%2C+R">R. Aggarwal</a>, <a href="/search/hep-ph?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ph?searchtype=author&query=Behnke%2C+O">O. Behnke</a>, <a href="/search/hep-ph?searchtype=author&query=Bertolin%2C+A">A. Bertolin</a>, <a href="/search/hep-ph?searchtype=author&query=Bloch%2C+I">I. Bloch</a>, <a href="/search/hep-ph?searchtype=author&query=Brock%2C+I">I. Brock</a>, <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N. H. Brook</a>, <a href="/search/hep-ph?searchtype=author&query=Brugnera%2C+R">R. Brugnera</a>, <a href="/search/hep-ph?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/hep-ph?searchtype=author&query=Bussey%2C+P+J">P. J. Bussey</a>, <a href="/search/hep-ph?searchtype=author&query=Caldwell%2C+A">A. Caldwell</a>, <a href="/search/hep-ph?searchtype=author&query=Catterall%2C+C+D">C. D. Catterall</a>, <a href="/search/hep-ph?searchtype=author&query=Chwastowski%2C+J">J. Chwastowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciborowski%2C+J">J. Ciborowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciesielski%2C+R">R. Ciesielski</a>, <a href="/search/hep-ph?searchtype=author&query=Cooper-Sarkar%2C+A+M">A. M. Cooper-Sarkar</a>, <a href="/search/hep-ph?searchtype=author&query=Corradi%2C+M">M. Corradi</a>, <a href="/search/hep-ph?searchtype=author&query=Dementiev%2C+R+K">R. K. Dementiev</a>, <a href="/search/hep-ph?searchtype=author&query=Dusini%2C+S">S. Dusini</a>, <a href="/search/hep-ph?searchtype=author&query=Ferrando%2C+J">J. Ferrando</a>, <a href="/search/hep-ph?searchtype=author&query=Foster%2C+B">B. Foster</a>, <a href="/search/hep-ph?searchtype=author&query=Gallo%2C+E">E. Gallo</a> , et al. (58 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="2206.13343v2-abstract-short" style="display: inline;"> The exclusive photoproduction reactions $纬p \to J/蠄(1S) p$ and $纬p \to 蠄(2S) p$ have been measured at an $ep$ centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 373 pb$^{-1}$. The measurement was made in the kinematic range $30 < W < 180$ GeV, $Q^2 < 1$ GeV$^2$ and $|t| < 1$ GeV$^2$, where $W$ is the photon--proton centre-of-mass energy, $Q^2$ is the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.13343v2-abstract-full').style.display = 'inline'; document.getElementById('2206.13343v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.13343v2-abstract-full" style="display: none;"> The exclusive photoproduction reactions $纬p \to J/蠄(1S) p$ and $纬p \to 蠄(2S) p$ have been measured at an $ep$ centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 373 pb$^{-1}$. The measurement was made in the kinematic range $30 < W < 180$ GeV, $Q^2 < 1$ GeV$^2$ and $|t| < 1$ GeV$^2$, where $W$ is the photon--proton centre-of-mass energy, $Q^2$ is the photon virtuality and $t$ is the squared four-momentum transfer at the proton vertex. The decay channels used were $J/蠄(1S) \to 渭^+ 渭^-$, $蠄(2S) \to 渭^+ 渭^-$ and $蠄(2S) \to J/蠄(1S) 蟺^+ 蟺^-$ with subsequent decay $J/蠄(1S) \to 渭^+ 渭^-$. The ratio of the production cross sections, $R = 蟽_{蠄(2S)} / 蟽_{J/蠄(1S)}$, has been measured as a function of $W$ and $|t|$ and compared to previous data in photoproduction and deep inelastic scattering and with predictions of QCD-inspired models of exclusive vector-meson production, which are in reasonable agreement with the data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.13343v2-abstract-full').style.display = 'none'; document.getElementById('2206.13343v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </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">31 pages, 9 figures. Updated according to comments from journal referee including a new table. Added full collaboration author list</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY-22-107 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2112.01120">arXiv:2112.01120</a> <span> [<a href="https://arxiv.org/pdf/2112.01120">pdf</a>, <a href="https://arxiv.org/format/2112.01120">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"> Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=H1"> H1</a>, <a href="/search/hep-ph?searchtype=author&query=Collaborations%2C+Z">ZEUS Collaborations</a>, <a href="/search/hep-ph?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ph?searchtype=author&query=Abt%2C+I">I. Abt</a>, <a href="/search/hep-ph?searchtype=author&query=Aggarwal%2C+R">R. Aggarwal</a>, <a href="/search/hep-ph?searchtype=author&query=Andreev%2C+V">V. Andreev</a>, <a href="/search/hep-ph?searchtype=author&query=Arratia%2C+M">M. Arratia</a>, <a href="/search/hep-ph?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ph?searchtype=author&query=Baghdasaryan%2C+A">A. Baghdasaryan</a>, <a href="/search/hep-ph?searchtype=author&query=Baty%2C+A">A. Baty</a>, <a href="/search/hep-ph?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ph?searchtype=author&query=Behnke%2C+O">O. Behnke</a>, <a href="/search/hep-ph?searchtype=author&query=Belousov%2C+A">A. Belousov</a>, <a href="/search/hep-ph?searchtype=author&query=Bertolin%2C+A">A. Bertolin</a>, <a href="/search/hep-ph?searchtype=author&query=Bloch%2C+I">I. Bloch</a>, <a href="/search/hep-ph?searchtype=author&query=Boudry%2C+V">V. Boudry</a>, <a href="/search/hep-ph?searchtype=author&query=Brandt%2C+G">G. Brandt</a>, <a href="/search/hep-ph?searchtype=author&query=Brock%2C+I">I. Brock</a>, <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N. H. Brook</a>, <a href="/search/hep-ph?searchtype=author&query=Brugnera%2C+R">R. Brugnera</a>, <a href="/search/hep-ph?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/hep-ph?searchtype=author&query=Buniatyan%2C+A">A. Buniatyan</a>, <a href="/search/hep-ph?searchtype=author&query=Bussey%2C+P+J">P. J. Bussey</a>, <a href="/search/hep-ph?searchtype=author&query=Bystritskaya%2C+L">L. Bystritskaya</a>, <a href="/search/hep-ph?searchtype=author&query=Caldwell%2C+A">A. Caldwell</a> , et al. (212 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="2112.01120v1-abstract-short" style="display: inline;"> The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic $ep$ scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of $伪_s(M_Z^2)$ and and the PDFs, was performed with the result… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.01120v1-abstract-full').style.display = 'inline'; document.getElementById('2112.01120v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2112.01120v1-abstract-full" style="display: none;"> The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic $ep$ scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of $伪_s(M_Z^2)$ and and the PDFs, was performed with the result $伪_s(M_Z^2) = 0.1156 \pm 0.0011~{\rm (exp)}~ ^{+0.0001}_{-0.0002}~ {\rm (model}$ ${\rm +~parameterisation)}~ \pm 0.0029~{\rm (scale)}$. The PDF sets of HERAPDF2.0Jets NNLO were determined with separate fits using two fixed values of $伪_s(M_Z^2)$, $伪_s(M_Z^2)=0.1155$ and $0.118$, since the latter value was already chosen for the published HERAPDF2.0 NNLO analysis based on HERA inclusive DIS data only. The different sets of PDFs are presented, evaluated and compared. The consistency of the PDFs determined with and without the jet data demonstrates the consistency of HERA inclusive and jet-production cross-section data. The inclusion of the jet data reduced the uncertainty on the gluon PDF. Predictions based on the PDFs of HERAPDF2.0Jets NNLO give an excellent description of the jet-production data used as input. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.01120v1-abstract-full').style.display = 'none'; document.getElementById('2112.01120v1-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 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">43 pages, 24 figures, to be submitted to Eur. Phys. J. C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY-21-206 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1604.02220">arXiv:1604.02220</a> <span> [<a href="https://arxiv.org/pdf/1604.02220">pdf</a>, <a href="https://arxiv.org/ps/1604.02220">ps</a>, <a href="https://arxiv.org/format/1604.02220">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2016.06.001">10.1016/j.physletb.2016.06.001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for a narrow baryonic state decaying to ${pK^0_S}$ and ${\bar{p}K^0_S}$ in deep inelastic scattering at HERA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=ZEUS+Collaboration"> ZEUS Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Abramowicz%2C+H">H. Abramowicz</a>, <a href="/search/hep-ph?searchtype=author&query=Abt%2C+I">I. Abt</a>, <a href="/search/hep-ph?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/hep-ph?searchtype=author&query=Adamus%2C+M">M. Adamus</a>, <a href="/search/hep-ph?searchtype=author&query=Antonelli%2C+S">S. Antonelli</a>, <a href="/search/hep-ph?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ph?searchtype=author&query=Behnke%2C+O">O. Behnke</a>, <a href="/search/hep-ph?searchtype=author&query=Behrens%2C+U">U. Behrens</a>, <a href="/search/hep-ph?searchtype=author&query=Bertolin%2C+A">A. Bertolin</a>, <a href="/search/hep-ph?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ph?searchtype=author&query=Bloch%2C+I">I. Bloch</a>, <a href="/search/hep-ph?searchtype=author&query=Boos%2C+E+G">E. G. Boos</a>, <a href="/search/hep-ph?searchtype=author&query=Brock%2C+I">I. Brock</a>, <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N. H. Brook</a>, <a href="/search/hep-ph?searchtype=author&query=Brugnera%2C+R">R. Brugnera</a>, <a href="/search/hep-ph?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/hep-ph?searchtype=author&query=Bussey%2C+P+J">P. J. Bussey</a>, <a href="/search/hep-ph?searchtype=author&query=Caldwell%2C+A">A. Caldwell</a>, <a href="/search/hep-ph?searchtype=author&query=Capua%2C+M">M. Capua</a>, <a href="/search/hep-ph?searchtype=author&query=Catterall%2C+C+D">C. D. Catterall</a>, <a href="/search/hep-ph?searchtype=author&query=Chwastowski%2C+J">J. Chwastowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciborowski%2C+J">J. Ciborowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciesielski%2C+R">R. Ciesielski</a>, <a href="/search/hep-ph?searchtype=author&query=Cooper-Sarkar%2C+A+M">A. M. Cooper-Sarkar</a> , et al. (102 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="1604.02220v2-abstract-short" style="display: inline;"> A search for a narrow baryonic state in the $pK^0_S$ and $\bar{p}K^0_S$ system has been performed in $ep$ collisions at HERA with the ZEUS detector using an integrated luminosity of 358 pb$^{-1}$ taken in 2003-2007. The search was performed with deep inelastic scattering events at an $ep$ centre-of-mass energy of 318 GeV for exchanged photon virtuality, $Q^2$, between 20 and 100 $\rm{} GeV^{2}$. C… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.02220v2-abstract-full').style.display = 'inline'; document.getElementById('1604.02220v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1604.02220v2-abstract-full" style="display: none;"> A search for a narrow baryonic state in the $pK^0_S$ and $\bar{p}K^0_S$ system has been performed in $ep$ collisions at HERA with the ZEUS detector using an integrated luminosity of 358 pb$^{-1}$ taken in 2003-2007. The search was performed with deep inelastic scattering events at an $ep$ centre-of-mass energy of 318 GeV for exchanged photon virtuality, $Q^2$, between 20 and 100 $\rm{} GeV^{2}$. Contrary to evidence presented for such a state around 1.52 GeV in a previous ZEUS analysis using a sample of 121 pb$^{-1}$ taken in 1996-2000, no resonance peak was found in the $p(\bar{p})K^0_S$ invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.02220v2-abstract-full').style.display = 'none'; document.getElementById('1604.02220v2-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 June, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2016. </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">16 pages, 4 figures, accepted by Phys. Lett. B. Minor changes from journal reviewing process, including a small correction to figure 4</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY-16-065 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B 759 (2016) 446-453 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1604.01280">arXiv:1604.01280</a> <span> [<a href="https://arxiv.org/pdf/1604.01280">pdf</a>, <a href="https://arxiv.org/ps/1604.01280">ps</a>, <a href="https://arxiv.org/format/1604.01280">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"> Limits on the effective quark radius from inclusive $ep$ scattering at HERA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=ZEUS+Collaboration"> ZEUS Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Abramowicz%2C+H">H. Abramowicz</a>, <a href="/search/hep-ph?searchtype=author&query=Abt%2C+I">I. Abt</a>, <a href="/search/hep-ph?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/hep-ph?searchtype=author&query=Adamus%2C+M">M. Adamus</a>, <a href="/search/hep-ph?searchtype=author&query=Antonelli%2C+S">S. Antonelli</a>, <a href="/search/hep-ph?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ph?searchtype=author&query=Behnke%2C+O">O. Behnke</a>, <a href="/search/hep-ph?searchtype=author&query=Behrens%2C+U">U. Behrens</a>, <a href="/search/hep-ph?searchtype=author&query=Bertolin%2C+A">A. Bertolin</a>, <a href="/search/hep-ph?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ph?searchtype=author&query=Bloch%2C+I">I. Bloch</a>, <a href="/search/hep-ph?searchtype=author&query=Boos%2C+E+G">E. G. Boos</a>, <a href="/search/hep-ph?searchtype=author&query=Brock%2C+I">I. Brock</a>, <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N. H. Brook</a>, <a href="/search/hep-ph?searchtype=author&query=Brugnera%2C+R">R. Brugnera</a>, <a href="/search/hep-ph?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/hep-ph?searchtype=author&query=Bussey%2C+P+J">P. J. Bussey</a>, <a href="/search/hep-ph?searchtype=author&query=Caldwell%2C+A">A. Caldwell</a>, <a href="/search/hep-ph?searchtype=author&query=Capua%2C+M">M. Capua</a>, <a href="/search/hep-ph?searchtype=author&query=Catterall%2C+C+D">C. D. Catterall</a>, <a href="/search/hep-ph?searchtype=author&query=Chwastowski%2C+J">J. Chwastowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciborowski%2C+J">J. Ciborowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciesielski%2C+R">R. Ciesielski</a>, <a href="/search/hep-ph?searchtype=author&query=Cooper-Sarkar%2C+A+M">A. M. Cooper-Sarkar</a> , et al. (103 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="1604.01280v1-abstract-short" style="display: inline;"> The high-precision HERA data allows searches up to TeV scales for Beyond the Standard Model contributions to electron-quark scattering. Combined measurements of the inclusive deep inelastic cross sections in neutral and charged current $ep$ scattering corresponding to a luminosity of around 1 fb$^{-1}$ have been used in this analysis. A new approach to the beyond the Standard Model analysis of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.01280v1-abstract-full').style.display = 'inline'; document.getElementById('1604.01280v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1604.01280v1-abstract-full" style="display: none;"> The high-precision HERA data allows searches up to TeV scales for Beyond the Standard Model contributions to electron-quark scattering. Combined measurements of the inclusive deep inelastic cross sections in neutral and charged current $ep$ scattering corresponding to a luminosity of around 1 fb$^{-1}$ have been used in this analysis. A new approach to the beyond the Standard Model analysis of the inclusive $ep$ data is presented; simultaneous fits of parton distribution functions together with contributions of "new physics" processes were performed. Results are presented considering a finite radius of quarks within the quark form-factor model. The resulting 95% C.L. upper limit on the effective quark radius is $0.43\cdot 10^{-16}$ cm. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.01280v1-abstract-full').style.display = 'none'; document.getElementById('1604.01280v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2016. </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, accepted by Phys. Lett. B</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY-16-035 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1603.09628">arXiv:1603.09628</a> <span> [<a href="https://arxiv.org/pdf/1603.09628">pdf</a>, <a href="https://arxiv.org/ps/1603.09628">ps</a>, <a href="https://arxiv.org/format/1603.09628">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"> Combined QCD and electroweak analysis of HERA data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=ZEUS+Collaboration"> ZEUS Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Abramowicz%2C+H">H. Abramowicz</a>, <a href="/search/hep-ph?searchtype=author&query=Abt%2C+I">I. Abt</a>, <a href="/search/hep-ph?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/hep-ph?searchtype=author&query=Adamus%2C+M">M. Adamus</a>, <a href="/search/hep-ph?searchtype=author&query=Antonelli%2C+S">S. Antonelli</a>, <a href="/search/hep-ph?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ph?searchtype=author&query=Behnke%2C+O">O. Behnke</a>, <a href="/search/hep-ph?searchtype=author&query=Behrens%2C+U">U. Behrens</a>, <a href="/search/hep-ph?searchtype=author&query=Bertolin%2C+A">A. Bertolin</a>, <a href="/search/hep-ph?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ph?searchtype=author&query=Bloch%2C+I">I. Bloch</a>, <a href="/search/hep-ph?searchtype=author&query=Boos%2C+E+G">E. G. Boos</a>, <a href="/search/hep-ph?searchtype=author&query=Brock%2C+I">I. Brock</a>, <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N. H. Brook</a>, <a href="/search/hep-ph?searchtype=author&query=Brugnera%2C+R">R. Brugnera</a>, <a href="/search/hep-ph?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/hep-ph?searchtype=author&query=Bussey%2C+P+J">P. J. Bussey</a>, <a href="/search/hep-ph?searchtype=author&query=Caldwell%2C+A">A. Caldwell</a>, <a href="/search/hep-ph?searchtype=author&query=Capua%2C+M">M. Capua</a>, <a href="/search/hep-ph?searchtype=author&query=Catterall%2C+C+D">C. D. Catterall</a>, <a href="/search/hep-ph?searchtype=author&query=Chwastowski%2C+J">J. Chwastowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciborowski%2C+J">J. Ciborowski</a>, <a href="/search/hep-ph?searchtype=author&query=Ciesielski%2C+R">R. Ciesielski</a>, <a href="/search/hep-ph?searchtype=author&query=Cooper-Sarkar%2C+A+M">A. M. Cooper-Sarkar</a> , et al. (102 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="1603.09628v2-abstract-short" style="display: inline;"> A simultaneous fit of parton distribution functions (PDFs) and electroweak parameters to HERA data on deep inelastic scattering is presented. The input data are the neutral current and charged current inclusive cross sections which were previously used in the QCD analysis leading to the HERAPDF2.0 PDFs. In addition, the polarisation of the electron beam was taken into account for the ZEUS data rec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.09628v2-abstract-full').style.display = 'inline'; document.getElementById('1603.09628v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1603.09628v2-abstract-full" style="display: none;"> A simultaneous fit of parton distribution functions (PDFs) and electroweak parameters to HERA data on deep inelastic scattering is presented. The input data are the neutral current and charged current inclusive cross sections which were previously used in the QCD analysis leading to the HERAPDF2.0 PDFs. In addition, the polarisation of the electron beam was taken into account for the ZEUS data recorded between 2004 and 2007. Results on the vector and axial-vector couplings of the Z boson to u- and d-type quarks, on the value of the electroweak mixing angle and the mass of the W boson are presented. The values obtained for the electroweak parameters are in agreement with Standard Model predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.09628v2-abstract-full').style.display = 'none'; document.getElementById('1603.09628v2-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 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">32 pages, 10 figures, accepted by Phys. Rev. D. Small corrections from proofing process and small change to Fig. 12 and Table 4</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY-16-039 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1511.06226">arXiv:1511.06226</a> <span> [<a href="https://arxiv.org/pdf/1511.06226">pdf</a>, <a href="https://arxiv.org/format/1511.06226">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 - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0954-3899/43/1/015001">10.1088/0954-3899/43/1/015001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Analysis of Charm Pair Production at the LHC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Souza%2C+D">D. Souza</a>, <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N. H. Brook</a> </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="1511.06226v1-abstract-short" style="display: inline;"> The DGLAP and CCFM approaches to perturbative QCD evolution have been investigated by examining correlations of charmed hadron pairs in $pp$ collisions at $\sqrt{s}=7$ TeV. The theoretical models are compared to the data taken by the LHCb experiment. Differences in the parton kinematics between the two approaches are discussed. In general a model incorporating NLO diagrams matched to parton shower… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1511.06226v1-abstract-full').style.display = 'inline'; document.getElementById('1511.06226v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1511.06226v1-abstract-full" style="display: none;"> The DGLAP and CCFM approaches to perturbative QCD evolution have been investigated by examining correlations of charmed hadron pairs in $pp$ collisions at $\sqrt{s}=7$ TeV. The theoretical models are compared to the data taken by the LHCb experiment. Differences in the parton kinematics between the two approaches are discussed. In general a model incorporating NLO diagrams matched to parton showers describes the data best. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1511.06226v1-abstract-full').style.display = 'none'; document.getElementById('1511.06226v1-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 November, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2015. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1411.4413">arXiv:1411.4413</a> <span> [<a href="https://arxiv.org/pdf/1411.4413">pdf</a>, <a href="https://arxiv.org/format/1411.4413">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/nature14474">10.1038/nature14474 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of the rare $B^0_s\to渭^+渭^-$ decay from the combined analysis of CMS and LHCb data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=CMS%2C+T">The CMS</a>, <a href="/search/hep-ph?searchtype=author&query=Collaborations%2C+L">LHCb Collaborations</a>, <a href="/search/hep-ph?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ph?searchtype=author&query=Khachatryan%2C+V">V. Khachatryan</a>, <a href="/search/hep-ph?searchtype=author&query=Sirunyan%2C+A+M">A. M. Sirunyan</a>, <a href="/search/hep-ph?searchtype=author&query=Tumasyan%2C+A">A. Tumasyan</a>, <a href="/search/hep-ph?searchtype=author&query=Adam%2C+W">W. Adam</a>, <a href="/search/hep-ph?searchtype=author&query=Bergauer%2C+T">T. Bergauer</a>, <a href="/search/hep-ph?searchtype=author&query=Dragicevic%2C+M">M. Dragicevic</a>, <a href="/search/hep-ph?searchtype=author&query=Er%C3%B6%2C+J">J. Er枚</a>, <a href="/search/hep-ph?searchtype=author&query=Friedl%2C+M">M. Friedl</a>, <a href="/search/hep-ph?searchtype=author&query=Fr%C3%BChwirth%2C+R">R. Fr眉hwirth</a>, <a href="/search/hep-ph?searchtype=author&query=Ghete%2C+V+M">V. M. Ghete</a>, <a href="/search/hep-ph?searchtype=author&query=Hartl%2C+C">C. Hartl</a>, <a href="/search/hep-ph?searchtype=author&query=H%C3%B6rmann%2C+N">N. H枚rmann</a>, <a href="/search/hep-ph?searchtype=author&query=Hrubec%2C+J">J. Hrubec</a>, <a href="/search/hep-ph?searchtype=author&query=Jeitler%2C+M">M. Jeitler</a>, <a href="/search/hep-ph?searchtype=author&query=Kiesenhofer%2C+W">W. Kiesenhofer</a>, <a href="/search/hep-ph?searchtype=author&query=Kn%C3%BCnz%2C+V">V. Kn眉nz</a>, <a href="/search/hep-ph?searchtype=author&query=Krammer%2C+M">M. Krammer</a>, <a href="/search/hep-ph?searchtype=author&query=Kr%C3%A4tschmer%2C+I">I. Kr盲tschmer</a>, <a href="/search/hep-ph?searchtype=author&query=Liko%2C+D">D. Liko</a>, <a href="/search/hep-ph?searchtype=author&query=Mikulec%2C+I">I. Mikulec</a>, <a href="/search/hep-ph?searchtype=author&query=Rabady%2C+D">D. Rabady</a>, <a href="/search/hep-ph?searchtype=author&query=Rahbaran%2C+B">B. Rahbaran</a> , et al. (2807 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="1411.4413v2-abstract-short" style="display: inline;"> A joint measurement is presented of the branching fractions $B^0_s\to渭^+渭^-$ and $B^0\to渭^+渭^-$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data samples were collected in 2011 at a centre-of-mass energy of 7 TeV, and in 2012 at 8 TeV. The combined analysis produces the first observation of the $B^0_s\to渭^+渭^-$ decay, with a statistical significance exceeding six sta… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1411.4413v2-abstract-full').style.display = 'inline'; document.getElementById('1411.4413v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1411.4413v2-abstract-full" style="display: none;"> A joint measurement is presented of the branching fractions $B^0_s\to渭^+渭^-$ and $B^0\to渭^+渭^-$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data samples were collected in 2011 at a centre-of-mass energy of 7 TeV, and in 2012 at 8 TeV. The combined analysis produces the first observation of the $B^0_s\to渭^+渭^-$ decay, with a statistical significance exceeding six standard deviations, and the best measurement of its branching fraction so far. Furthermore, evidence for the $B^0\to渭^+渭^-$ decay is obtained with a statistical significance of three standard deviations. The branching fraction measurements are statistically compatible with SM predictions and impose stringent constraints on several theories beyond the SM. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1411.4413v2-abstract-full').style.display = 'none'; document.getElementById('1411.4413v2-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 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 November, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2014. </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">Correspondence should be addressed to cms-and-lhcb-publication-committees@cern.ch</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2014-220, CMS-BPH-13-007, LHCb-PAPER-2014-049 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature 522, 68-72 (04 June 2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1405.4140">arXiv:1405.4140</a> <span> [<a href="https://arxiv.org/pdf/1405.4140">pdf</a>, <a href="https://arxiv.org/format/1405.4140">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2014.06.079">10.1016/j.physletb.2014.06.079 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the CP-violating phase $蠁_s$ in $\overline{B}^0_s\rightarrow J/蠄蟺^+蟺^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Akar%2C+S">S. Akar</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Ali%2C+S">S. Ali</a>, <a href="/search/hep-ph?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amerio%2C+S">S. Amerio</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ph?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Andreassen%2C+R">R. Andreassen</a>, <a href="/search/hep-ph?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ph?searchtype=author&query=Andrews%2C+J+E">J. E. Andrews</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a> , et al. (676 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="1405.4140v1-abstract-short" style="display: inline;"> The mixing-induced CP-violating phase $蠁_s$ in ${B}^0_s$ and $\overline{B}^0_s$ decays is measured using the $J/蠄蟺^+蟺^-$ final state in data, taken from 3\,fb$^{-1}$ of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass $pp$ collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct \CP violation, yields a value for the phase… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.4140v1-abstract-full').style.display = 'inline'; document.getElementById('1405.4140v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1405.4140v1-abstract-full" style="display: none;"> The mixing-induced CP-violating phase $蠁_s$ in ${B}^0_s$ and $\overline{B}^0_s$ decays is measured using the $J/蠄蟺^+蟺^-$ final state in data, taken from 3\,fb$^{-1}$ of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass $pp$ collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct \CP violation, yields a value for the phase $蠁_s=70\pm 68\pm 8$\,mrad. This result is consistent with the Standard Model expectation and previous measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.4140v1-abstract-full').style.display = 'none'; document.getElementById('1405.4140v1-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 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2014. </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, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2014-086, LHCb-PAPER-2014-019 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B, 736, (2014) 186 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1404.5673">arXiv:1404.5673</a> <span> [<a href="https://arxiv.org/pdf/1404.5673">pdf</a>, <a href="https://arxiv.org/format/1404.5673">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.90.012003">10.1103/PhysRevD.90.012003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the resonant and CP components in $\overline{B}^0\rightarrow J/蠄蟺^+蟺^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Ali%2C+S">S. Ali</a>, <a href="/search/hep-ph?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amerio%2C+S">S. Amerio</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=An%2C+L">L. An</a>, <a href="/search/hep-ph?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Andreassen%2C+R">R. Andreassen</a>, <a href="/search/hep-ph?searchtype=author&query=Andreotti%2C+M">M. Andreotti</a>, <a href="/search/hep-ph?searchtype=author&query=Andrews%2C+J+E">J. E. Andrews</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Archilli%2C+F">F. Archilli</a> , et al. (672 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="1404.5673v2-abstract-short" style="display: inline;"> The resonant structure of the reaction $\overline{B}^0\rightarrow J/蠄蟺^+蟺^-$ is studied using data from 3 fb$^{-1}$ of integrated luminosity collected by the LHCb experiment, one-third at 7 Tev center-of-mass energy and the remainder at 8 Tev. The invariant mass of the $蟺^+蟺^-$ pair and three decay angular distributions are used to determine the fractions of the resonant and non-resonant component… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.5673v2-abstract-full').style.display = 'inline'; document.getElementById('1404.5673v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1404.5673v2-abstract-full" style="display: none;"> The resonant structure of the reaction $\overline{B}^0\rightarrow J/蠄蟺^+蟺^-$ is studied using data from 3 fb$^{-1}$ of integrated luminosity collected by the LHCb experiment, one-third at 7 Tev center-of-mass energy and the remainder at 8 Tev. The invariant mass of the $蟺^+蟺^-$ pair and three decay angular distributions are used to determine the fractions of the resonant and non-resonant components. Six interfering $蟺^+蟺^-$ states: $蟻(770)$, $f_0(500)$, $f_2(1270)$, $蟻(1450)$, $蠅(782)$ and $蟻(1700)$ are required to give a good description of invariant mass spectra and decay angular distributions. The positive and negative CP fractions of each of the resonant final states are determined. The $f_0(980)$ meson is not seen and the upper limit on its presence, compared with the observed $f_0(500)$ rate, is inconsistent with a model of tetraquark substructure for these scalar mesons at the eight standard deviation level. In the $q\overline{q}$ model, the absolute value of the mixing angle between the $f_0(980)$ and the $f_0(500)$ scalar mesons is limited to be less than $17^{\circ}$ at 90% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.5673v2-abstract-full').style.display = 'none'; document.getElementById('1404.5673v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 April, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2014. </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 14 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2014-069, LHCb-PAPER-2014-012 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 90, 012003 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1307.5024">arXiv:1307.5024</a> <span> [<a href="https://arxiv.org/pdf/1307.5024">pdf</a>, <a href="https://arxiv.org/format/1307.5024">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.111.101805">10.1103/PhysRevLett.111.101805 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $B^0_s \to 渭^+ 渭^-$ branching fraction and search for $B^0 \to 渭^+ 渭^-$ decays at the LHCb experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Ali%2C+S">S. Ali</a>, <a href="/search/hep-ph?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amerio%2C+S">S. Amerio</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Andreassen%2C+R">R. Andreassen</a>, <a href="/search/hep-ph?searchtype=author&query=Andrews%2C+J+E">J. E. Andrews</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Archilli%2C+F">F. Archilli</a>, <a href="/search/hep-ph?searchtype=author&query=Artamonov%2C+A">A. Artamonov</a> , et al. (628 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="1307.5024v2-abstract-short" style="display: inline;"> A search for the rare decays $B^0_s \to渭^+渭^-$ and $B^0 \to渭^+渭^-$ is performed at the LHCb experiment. The data analysed correspond to an integrated luminosity of 1 fb$^{-1}$ of $pp$ collisions at a centre-of-mass energy of 7 TeV and 2 fb$^{-1}$ at 8 TeV. An excess of $B^0_s \to渭^+渭^-$ signal candidates with respect to the background expectation is seen with a significance of 4.0 standard deviati… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.5024v2-abstract-full').style.display = 'inline'; document.getElementById('1307.5024v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1307.5024v2-abstract-full" style="display: none;"> A search for the rare decays $B^0_s \to渭^+渭^-$ and $B^0 \to渭^+渭^-$ is performed at the LHCb experiment. The data analysed correspond to an integrated luminosity of 1 fb$^{-1}$ of $pp$ collisions at a centre-of-mass energy of 7 TeV and 2 fb$^{-1}$ at 8 TeV. An excess of $B^0_s \to渭^+渭^-$ signal candidates with respect to the background expectation is seen with a significance of 4.0 standard deviations. A time-integrated branching fraction of ${\cal B}(B^0_s \to渭^+渭^-) = (2.9^{+1.1}_{-1.0})\times 10^{-9}$ is obtained and an upper limit of ${\cal B}(B^0 \to渭^+渭^-) < 7.4\times 10^{-10}$ at 95% confidence level is set. These results are consistent with the Standard Model expectations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.5024v2-abstract-full').style.display = 'none'; document.getElementById('1307.5024v2-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 September, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2013. </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, Phys. Rev. Lett. 111, 101805 (2013)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2013-128, LHCb-PAPER-2013-046 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 111, 101805 (2013) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1307.2476">arXiv:1307.2476</a> <span> [<a href="https://arxiv.org/pdf/1307.2476">pdf</a>, <a href="https://arxiv.org/format/1307.2476">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> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.111.102003">10.1103/PhysRevLett.111.102003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Precision measurement of the Lambda_b baryon lifetime </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Ali%2C+S">S. Ali</a>, <a href="/search/hep-ph?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amerio%2C+S">S. Amerio</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=Anderlini%2C+L">L. Anderlini</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Andreassen%2C+R">R. Andreassen</a>, <a href="/search/hep-ph?searchtype=author&query=Andrews%2C+J+E">J. E. Andrews</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Archilli%2C+F">F. Archilli</a>, <a href="/search/hep-ph?searchtype=author&query=Artamonov%2C+A">A. Artamonov</a> , et al. (630 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="1307.2476v2-abstract-short" style="display: inline;"> The ratio of the 螞b baryon lifetime to that of the B0 meson is measured using 1.0/fb of integrated luminosity in 7 TeV center-of-mass energy pp collisions at the LHC. The 螞b baryon is observed for the first time in the decay mode 螞b -> J/蠄pK-, while the B0 meson decay used is the well known B0 -> J/蠄pi+K- mode, where the pi+ K- mass is consistent with that of the K*0(892) meson. The ratio of lifet… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.2476v2-abstract-full').style.display = 'inline'; document.getElementById('1307.2476v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1307.2476v2-abstract-full" style="display: none;"> The ratio of the 螞b baryon lifetime to that of the B0 meson is measured using 1.0/fb of integrated luminosity in 7 TeV center-of-mass energy pp collisions at the LHC. The 螞b baryon is observed for the first time in the decay mode 螞b -> J/蠄pK-, while the B0 meson decay used is the well known B0 -> J/蠄pi+K- mode, where the pi+ K- mass is consistent with that of the K*0(892) meson. The ratio of lifetimes is measured to be 0.976 +/- 0.012 +/- 0.006, in agreement with theoretical expectations based on the heavy quark expansion. Using previous determinations of the B0 meson lifetime, the 螞b lifetime is found to be 1.482 +/- 0.018 +/- 0.012 ps. In both cases the first uncertainty is statistical and the second systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.2476v2-abstract-full').style.display = 'none'; document.getElementById('1307.2476v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2013. </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">11 pages 6 figures, v2 minor corrections</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2013-117, LHCb-PAPER-2013-032 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 111, 102003 (2013) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1208.3355">arXiv:1208.3355</a> <span> [<a href="https://arxiv.org/pdf/1208.3355">pdf</a>, <a href="https://arxiv.org/format/1208.3355">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-013-2373-2">10.1140/epjc/s10052-013-2373-2 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Implications of LHCb measurements and future prospects </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Bharucha%2C+A">A. Bharucha</a>, <a href="/search/hep-ph?searchtype=author&query=Bigi%2C+I+I">I. I. Bigi</a>, <a href="/search/hep-ph?searchtype=author&query=Bobeth%2C+C">C. Bobeth</a>, <a href="/search/hep-ph?searchtype=author&query=Bobrowski%2C+M">M. Bobrowski</a>, <a href="/search/hep-ph?searchtype=author&query=Brod%2C+J">J. Brod</a>, <a href="/search/hep-ph?searchtype=author&query=Buras%2C+A+J">A. J. Buras</a>, <a href="/search/hep-ph?searchtype=author&query=Davies%2C+C+T+H">C. T. H. Davies</a>, <a href="/search/hep-ph?searchtype=author&query=Datta%2C+A">A. Datta</a>, <a href="/search/hep-ph?searchtype=author&query=Delaunay%2C+C">C. Delaunay</a>, <a href="/search/hep-ph?searchtype=author&query=Descotes-Genon%2C+S">S. Descotes-Genon</a>, <a href="/search/hep-ph?searchtype=author&query=Ellis%2C+J">J. Ellis</a>, <a href="/search/hep-ph?searchtype=author&query=Feldmann%2C+T">T. Feldmann</a>, <a href="/search/hep-ph?searchtype=author&query=Fleischer%2C+R">R. Fleischer</a>, <a href="/search/hep-ph?searchtype=author&query=Gedalia%2C+O">O. Gedalia</a>, <a href="/search/hep-ph?searchtype=author&query=Girrbach%2C+J">J. Girrbach</a>, <a href="/search/hep-ph?searchtype=author&query=Guadagnoli%2C+D">D. Guadagnoli</a>, <a href="/search/hep-ph?searchtype=author&query=Hiller%2C+G">G. Hiller</a>, <a href="/search/hep-ph?searchtype=author&query=Hochberg%2C+Y">Y. Hochberg</a>, <a href="/search/hep-ph?searchtype=author&query=Hurth%2C+T">T. Hurth</a>, <a href="/search/hep-ph?searchtype=author&query=Isidori%2C+G">G. Isidori</a>, <a href="/search/hep-ph?searchtype=author&query=Jaeger%2C+S">S. Jaeger</a>, <a href="/search/hep-ph?searchtype=author&query=Jung%2C+M">M. Jung</a>, <a href="/search/hep-ph?searchtype=author&query=Kagan%2C+A">A. Kagan</a>, <a href="/search/hep-ph?searchtype=author&query=Kamenik%2C+J+F">J. F. Kamenik</a> , et al. (741 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="1208.3355v3-abstract-short" style="display: inline;"> During 2011 the LHCb experiment at CERN collected 1.0 fb-1 of sqrt{s} = 7 TeV pp collisions. Due to the large heavy quark production cross-sections, these data provide unprecedented samples of heavy flavoured hadrons. The first results from LHCb have made a significant impact on the flavour physics landscape and have definitively proved the concept of a dedicated experiment in the forward region a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1208.3355v3-abstract-full').style.display = 'inline'; document.getElementById('1208.3355v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1208.3355v3-abstract-full" style="display: none;"> During 2011 the LHCb experiment at CERN collected 1.0 fb-1 of sqrt{s} = 7 TeV pp collisions. Due to the large heavy quark production cross-sections, these data provide unprecedented samples of heavy flavoured hadrons. The first results from LHCb have made a significant impact on the flavour physics landscape and have definitively proved the concept of a dedicated experiment in the forward region at a hadron collider. This document discusses the implications of these first measurements on classes of extensions to the Standard Model, bearing in mind the interplay with the results of searches for on-shell production of new particles at ATLAS and CMS. The physics potential of an upgrade to the LHCb detector, which would allow an order of magnitude more data to be collected, is emphasised. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1208.3355v3-abstract-full').style.display = 'none'; document.getElementById('1208.3355v3-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 April, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 August, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2012. </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">v2: 180 pages; many figures. Updated for submission to EPJC; v3: published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PUB-2012-006; LHCb-PAPER-2012-031; CERN-PH-EP-2012-334 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> EPJ C 73 (2013) 2373 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1203.4493">arXiv:1203.4493</a> <span> [<a href="https://arxiv.org/pdf/1203.4493">pdf</a>, <a href="https://arxiv.org/format/1203.4493">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.108.231801">10.1103/PhysRevLett.108.231801 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Strong constraints on the rare decays Bs -> mu+ mu- and B0 -> mu+ mu- </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+collaboration"> LHCb collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ph?searchtype=author&query=Adametz%2C+A">A. Adametz</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Ali%2C+S">S. Ali</a>, <a href="/search/hep-ph?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Archilli%2C+F">F. Archilli</a>, <a href="/search/hep-ph?searchtype=author&query=Artamonov%2C+A">A. Artamonov</a>, <a href="/search/hep-ph?searchtype=author&query=Artuso%2C+M">M. Artuso</a>, <a href="/search/hep-ph?searchtype=author&query=Aslanides%2C+E">E. Aslanides</a> , et al. (585 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="1203.4493v2-abstract-short" style="display: inline;"> A search for Bs -> mu+ mu- and B0 -> mu+ mu- decays is performed using 1.0 fb^-1 of pp collision data collected at \sqrt{s}=7 TeV with the LHCb experiment at the Large Hadron Collider. For both decays the number of observed events is consistent with expectation from background and Standard Model signal predictions. Upper limits on the branching fractions are determined to be BR(Bs -> mu+ mu-) < 4.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.4493v2-abstract-full').style.display = 'inline'; document.getElementById('1203.4493v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1203.4493v2-abstract-full" style="display: none;"> A search for Bs -> mu+ mu- and B0 -> mu+ mu- decays is performed using 1.0 fb^-1 of pp collision data collected at \sqrt{s}=7 TeV with the LHCb experiment at the Large Hadron Collider. For both decays the number of observed events is consistent with expectation from background and Standard Model signal predictions. Upper limits on the branching fractions are determined to be BR(Bs -> mu+ mu-) < 4.5 (3.8) x 10^-9 and BR(B0 -> mu+ mu-) < 1.0 (0.81) x 10^-9 at 95% (90%) confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.4493v2-abstract-full').style.display = 'none'; document.getElementById('1203.4493v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 April, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 March, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2012. </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">2+6 pages; 4 figures; Accepted for publication in Physical Review Letters</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2012-072, LHCb-PAPER-2012-007 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 108, 231801 (2012) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1202.4717">arXiv:1202.4717</a> <span> [<a href="https://arxiv.org/pdf/1202.4717">pdf</a>, <a href="https://arxiv.org/format/1202.4717">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.108.241801">10.1103/PhysRevLett.108.241801 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determination of the sign of the decay width difference in the B_s system </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+Collaboration"> LHCb Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Archilli%2C+F">F. Archilli</a>, <a href="/search/hep-ph?searchtype=author&query=Arrabito%2C+L">L. Arrabito</a>, <a href="/search/hep-ph?searchtype=author&query=Artamonov%2C+A">A. Artamonov</a>, <a href="/search/hep-ph?searchtype=author&query=Artuso%2C+M">M. Artuso</a>, <a href="/search/hep-ph?searchtype=author&query=Aslanides%2C+E">E. Aslanides</a>, <a href="/search/hep-ph?searchtype=author&query=Auriemma%2C+G">G. Auriemma</a> , et al. (572 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="1202.4717v4-abstract-short" style="display: inline;"> The interference between the K+K- S-wave and P-wave amplitudes in B_s -> J/psi K+K- decays with the K+K- pairs in the region around the phi(1020) resonance is used to determine the variation of the difference of the strong phase between these amplitudes as a function of K+K- invariant mass. Combined with the results from our CP asymmetry measurements in B_s -> J/psi phi decays, we conclude that th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1202.4717v4-abstract-full').style.display = 'inline'; document.getElementById('1202.4717v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1202.4717v4-abstract-full" style="display: none;"> The interference between the K+K- S-wave and P-wave amplitudes in B_s -> J/psi K+K- decays with the K+K- pairs in the region around the phi(1020) resonance is used to determine the variation of the difference of the strong phase between these amplitudes as a function of K+K- invariant mass. Combined with the results from our CP asymmetry measurements in B_s -> J/psi phi decays, we conclude that the B_s mass eigenstate that is almost CP =+1 is lighter and decays faster than the mass eigenstate that is almost CP =-1. This determines the sign of the decay width difference DeltaGamma_s == Gamma_L -Gamma_H to be positive. Our result also resolves the ambiguity in the past measurements of the CP violating phase phi_s to be close to zero rather than pi. These conclusions are in agreement with the Standard Model expectations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1202.4717v4-abstract-full').style.display = 'none'; document.getElementById('1202.4717v4-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 July, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 February, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 4 figures, published on Physical Review Letters</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2012-050; LHCb-PAPER-2011-028 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 108, 241801 (2012) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1112.1600">arXiv:1112.1600</a> <span> [<a href="https://arxiv.org/pdf/1112.1600">pdf</a>, <a href="https://arxiv.org/format/1112.1600">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2012.01.038">10.1016/j.physletb.2012.01.038 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the rare decays Bs -> mu+ mu- and B0 -> mu+ mu- </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+Collaboration"> LHCb Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Archilli%2C+F">F. Archilli</a>, <a href="/search/hep-ph?searchtype=author&query=Arrabito%2C+L">L. Arrabito</a>, <a href="/search/hep-ph?searchtype=author&query=Artamonov%2C+A">A. Artamonov</a>, <a href="/search/hep-ph?searchtype=author&query=Artuso%2C+M">M. Artuso</a>, <a href="/search/hep-ph?searchtype=author&query=Aslanides%2C+E">E. Aslanides</a>, <a href="/search/hep-ph?searchtype=author&query=Auriemma%2C+G">G. Auriemma</a> , et al. (568 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="1112.1600v3-abstract-short" style="display: inline;"> A search for the decays Bs -> mu+ mu- and B0 -> mu+ mu- is performed with 0.37 fb^-1 of pp collisions at sqrt{s} = 7 TeV collected by the LHCb experiment in 2011. The upper limits on the branching fractions are BR (Bs -> mu+ mu-) < 1.6 x 10^-8 and BR(B0 -> mu+ mu-) < 3.6 x 10^-9 at 95% confidence level. A combination of these results with the LHCb limits obtained with the 2010 dataset leads to BR… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1112.1600v3-abstract-full').style.display = 'inline'; document.getElementById('1112.1600v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1112.1600v3-abstract-full" style="display: none;"> A search for the decays Bs -> mu+ mu- and B0 -> mu+ mu- is performed with 0.37 fb^-1 of pp collisions at sqrt{s} = 7 TeV collected by the LHCb experiment in 2011. The upper limits on the branching fractions are BR (Bs -> mu+ mu-) < 1.6 x 10^-8 and BR(B0 -> mu+ mu-) < 3.6 x 10^-9 at 95% confidence level. A combination of these results with the LHCb limits obtained with the 2010 dataset leads to BR (Bs -> mu+ mu-) < 1.4 x 10^-8 and BR (B0 -> mu+ mu-) < 3.2 x 10^-9 at 95% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1112.1600v3-abstract-full').style.display = 'none'; document.getElementById('1112.1600v3-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 January, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 December, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2011. </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">6+19 pages, 9 figures; minor changes; matches version accepted in Phys. Lett. B</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2011-186; LHCb-PAPER-2011-025 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B 708 (2012) 55-67 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1109.6831">arXiv:1109.6831</a> <span> [<a href="https://arxiv.org/pdf/1109.6831">pdf</a>, <a href="https://arxiv.org/ps/1109.6831">ps</a>, <a href="https://arxiv.org/format/1109.6831">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.84.092001">10.1103/PhysRevD.84.092001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of the Branching fractions for $B_(s) -> D_(s)蟺蟺蟺$ and $螞_b^0 -> 螞_c^+蟺蟺蟺$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+Collaboration"> LHCb Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Alkhazov%2C+G">G. Alkhazov</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Archilli%2C+F">F. Archilli</a>, <a href="/search/hep-ph?searchtype=author&query=Arrabito%2C+L">L. Arrabito</a>, <a href="/search/hep-ph?searchtype=author&query=Artamonov%2C+A">A. Artamonov</a>, <a href="/search/hep-ph?searchtype=author&query=Artuso%2C+M">M. Artuso</a>, <a href="/search/hep-ph?searchtype=author&query=Aslanides%2C+E">E. Aslanides</a>, <a href="/search/hep-ph?searchtype=author&query=Auriemma%2C+G">G. Auriemma</a>, <a href="/search/hep-ph?searchtype=author&query=Bachmann%2C+S">S. Bachmann</a> , et al. (544 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="1109.6831v1-abstract-short" style="display: inline;"> Branching fractions of the decays $H_b\to H_c蟺^-蟺^+蟺^-$ relative to $H_b\to H_c蟺^-$ are presented, where $H_b$ ($H_c$) represents B^0-bar($D^+$), $B^-$ ($D^0$), B_s^0-bar ($D_s^+$) and $螞_b^0$ ($螞_c^+$). The measurements are performed with the LHCb detector using 35${\rm pb^{-1}}$ of data collected at $\sqrt{s}=7$ TeV. The ratios of branching fractions are measured to be B(B^0-bar -> D^+蟺^-蟺^+蟺^… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1109.6831v1-abstract-full').style.display = 'inline'; document.getElementById('1109.6831v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1109.6831v1-abstract-full" style="display: none;"> Branching fractions of the decays $H_b\to H_c蟺^-蟺^+蟺^-$ relative to $H_b\to H_c蟺^-$ are presented, where $H_b$ ($H_c$) represents B^0-bar($D^+$), $B^-$ ($D^0$), B_s^0-bar ($D_s^+$) and $螞_b^0$ ($螞_c^+$). The measurements are performed with the LHCb detector using 35${\rm pb^{-1}}$ of data collected at $\sqrt{s}=7$ TeV. The ratios of branching fractions are measured to be B(B^0-bar -> D^+蟺^-蟺^+蟺^-)/ B(B^0-bar -> D^+蟺^-) = 2.38\pm0.11\pm0.21 B(B^- -> D^0蟺^-蟺^+蟺^-) / B(B^- -> D^0蟺^-) = 1.27\pm0.06\pm0.11 B(B_s^0-bar -> D_s^+蟺^-蟺^+蟺^-) / B(B_s^0-bar -> D_s^+蟺^-) = 2.01\pm0.37\pm0.20 B(螞_b^0->螞_c^+蟺^-蟺^+蟺^-) / B(螞_b^0 -> 螞_c^+蟺^-) = 1.43\pm0.16\pm0.13. We also report measurements of partial decay rates of these decays to excited charm hadrons. These results are of comparable or higher precision than existing measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1109.6831v1-abstract-full').style.display = 'none'; document.getElementById('1109.6831v1-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 September, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">26 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2011-016; CERN-PH-EP-2011-151 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D84:092001,2011; Erratum: PhysRevD.85.039904 (2012) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1103.2465">arXiv:1103.2465</a> <span> [<a href="https://arxiv.org/pdf/1103.2465">pdf</a>, <a href="https://arxiv.org/format/1103.2465">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2011.04.031">10.1016/j.physletb.2011.04.031 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the rare decays Bs -->mumu and Bd -->mumu </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+Collaboration"> LHCb Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=Amoraal%2C+J">J. Amoraal</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Arrabito%2C+L">L. Arrabito</a>, <a href="/search/hep-ph?searchtype=author&query=Artuso%2C+M">M. Artuso</a>, <a href="/search/hep-ph?searchtype=author&query=Aslanides%2C+E">E. Aslanides</a>, <a href="/search/hep-ph?searchtype=author&query=Auriemma%2C+G">G. Auriemma</a>, <a href="/search/hep-ph?searchtype=author&query=Bachmann%2C+S">S. Bachmann</a>, <a href="/search/hep-ph?searchtype=author&query=Bailey%2C+D+S">D. S. Bailey</a>, <a href="/search/hep-ph?searchtype=author&query=Balagura%2C+V">V. Balagura</a> , et al. (520 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="1103.2465v3-abstract-short" style="display: inline;"> A search for the decays Bs-->mumu and Bd-->mumu is performed with about 37 pb^{-1} of pp collisions at sqrt{s} = 7 TeV collected by the LHCb experiment at the Large Hadron Collider at CERN. The observed numbers of events are consistent with the background expectations. The resulting upper limits on the branching ratios are BR(Bs-->mumu) < 5.6 x 10^{-8} and BR(Bd-->mumu) <1.5 x 10^{-8} at 95% confi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1103.2465v3-abstract-full').style.display = 'inline'; document.getElementById('1103.2465v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1103.2465v3-abstract-full" style="display: none;"> A search for the decays Bs-->mumu and Bd-->mumu is performed with about 37 pb^{-1} of pp collisions at sqrt{s} = 7 TeV collected by the LHCb experiment at the Large Hadron Collider at CERN. The observed numbers of events are consistent with the background expectations. The resulting upper limits on the branching ratios are BR(Bs-->mumu) < 5.6 x 10^{-8} and BR(Bd-->mumu) <1.5 x 10^{-8} at 95% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1103.2465v3-abstract-full').style.display = 'none'; document.getElementById('1103.2465v3-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 July, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 March, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2011. </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, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2011-004; CERN-PH-EP-2011-029 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B699 (2011) 330-340 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1102.0206">arXiv:1102.0206</a> <span> [<a href="https://arxiv.org/pdf/1102.0206">pdf</a>, <a href="https://arxiv.org/ps/1102.0206">ps</a>, <a href="https://arxiv.org/format/1102.0206">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2011.03.006">10.1016/j.physletb.2011.03.006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First observation of Bs -> J/psi f0(980) decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=The+LHCb+Collaboration"> The LHCb Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=Amoraal%2C+J">J. Amoraal</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R+B">R. B. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Arrabito%2C+L">L. Arrabito</a>, <a href="/search/hep-ph?searchtype=author&query=Artuso%2C+M">M. Artuso</a>, <a href="/search/hep-ph?searchtype=author&query=Aslanides%2C+E">E. Aslanides</a>, <a href="/search/hep-ph?searchtype=author&query=Auriemma%2C+G">G. Auriemma</a>, <a href="/search/hep-ph?searchtype=author&query=Bachmann%2C+S">S. Bachmann</a>, <a href="/search/hep-ph?searchtype=author&query=Bailey%2C+D+S">D. S. Bailey</a>, <a href="/search/hep-ph?searchtype=author&query=Balagura%2C+V">V. Balagura</a> , et al. (523 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="1102.0206v2-abstract-short" style="display: inline;"> Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay Bs -> J/psi f0(980) is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the B_s system. Using a fit to the pi+ pi- mass spectrum with interfering resonances gives R_{f0/phi} = [Gamma(Bs -> J/psi f0, f0 -> pi+ pi-)]/[Gamma(Bs -> J/p… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1102.0206v2-abstract-full').style.display = 'inline'; document.getElementById('1102.0206v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1102.0206v2-abstract-full" style="display: none;"> Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay Bs -> J/psi f0(980) is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the B_s system. Using a fit to the pi+ pi- mass spectrum with interfering resonances gives R_{f0/phi} = [Gamma(Bs -> J/psi f0, f0 -> pi+ pi-)]/[Gamma(Bs -> J/psi phi, phi -> K+K-)] = 0.252^{+0.046+0.027}_{-0.032-0.033}, where the uncertainties are statistical and systematic, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1102.0206v2-abstract-full').style.display = 'none'; document.getElementById('1102.0206v2-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 March, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 February, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2011. </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">11 pages, 6 figures. To be published in Physics Letters B</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2011-002; CERN-PH-EP-2011-011 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Lett.B698:115-122,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1009.2731">arXiv:1009.2731</a> <span> [<a href="https://arxiv.org/pdf/1009.2731">pdf</a>, <a href="https://arxiv.org/ps/1009.2731">ps</a>, <a href="https://arxiv.org/format/1009.2731">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2010.10.010">10.1016/j.physletb.2010.10.010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of sigma(pp -> b anti-b X) at \sqrt(s)=7 TeV in the forward region </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=LHCb+Collaboration"> LHCb Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Aaij%2C+R">R. Aaij</a>, <a href="/search/hep-ph?searchtype=author&query=Beteta%2C+C+A">C. Abellan Beteta</a>, <a href="/search/hep-ph?searchtype=author&query=Adeva%2C+B">B. Adeva</a>, <a href="/search/hep-ph?searchtype=author&query=Adinolfi%2C+M">M. Adinolfi</a>, <a href="/search/hep-ph?searchtype=author&query=Adrover%2C+C">C. Adrover</a>, <a href="/search/hep-ph?searchtype=author&query=Affolder%2C+A">A. Affolder</a>, <a href="/search/hep-ph?searchtype=author&query=Agari%2C+M">M. Agari</a>, <a href="/search/hep-ph?searchtype=author&query=Ajaltouni%2C+Z">Z. Ajaltouni</a>, <a href="/search/hep-ph?searchtype=author&query=Albrecht%2C+J">J. Albrecht</a>, <a href="/search/hep-ph?searchtype=author&query=Alessio%2C+F">F. Alessio</a>, <a href="/search/hep-ph?searchtype=author&query=Alexander%2C+M">M. Alexander</a>, <a href="/search/hep-ph?searchtype=author&query=Alfonsi%2C+M">M. Alfonsi</a>, <a href="/search/hep-ph?searchtype=author&query=Cartelle%2C+P+A">P. Alvarez Cartelle</a>, <a href="/search/hep-ph?searchtype=author&query=Alves%2C+A+A">A. A. Alves Jr</a>, <a href="/search/hep-ph?searchtype=author&query=Amato%2C+S">S. Amato</a>, <a href="/search/hep-ph?searchtype=author&query=Amhis%2C+Y">Y. Amhis</a>, <a href="/search/hep-ph?searchtype=author&query=Amoraal%2C+J">J. Amoraal</a>, <a href="/search/hep-ph?searchtype=author&query=Anderson%2C+J">J. Anderson</a>, <a href="/search/hep-ph?searchtype=author&query=Nobrega%2C+R+A">R. Antunes Nobrega</a>, <a href="/search/hep-ph?searchtype=author&query=Appleby%2C+R">R. Appleby</a>, <a href="/search/hep-ph?searchtype=author&query=Gutierrez%2C+O+A">O. Aquines Gutierrez</a>, <a href="/search/hep-ph?searchtype=author&query=Arefyev%2C+A">A. Arefyev</a>, <a href="/search/hep-ph?searchtype=author&query=Arrabito%2C+L">L. Arrabito</a>, <a href="/search/hep-ph?searchtype=author&query=Artuso%2C+M">M. Artuso</a> , et al. (606 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="1009.2731v2-abstract-short" style="display: inline;"> Decays of b hadrons into final states containing a D0 meson and a muon are used to measure the b anti-b production cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. In the pseudorapidity interval 2 < eta < 6 and integrated over all transverse momenta we find that the average cross-section to produce b-flavoured or anti-b-flavoured hadrons is (75.3 +/- 5.4 +/… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.2731v2-abstract-full').style.display = 'inline'; document.getElementById('1009.2731v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1009.2731v2-abstract-full" style="display: none;"> Decays of b hadrons into final states containing a D0 meson and a muon are used to measure the b anti-b production cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. In the pseudorapidity interval 2 < eta < 6 and integrated over all transverse momenta we find that the average cross-section to produce b-flavoured or anti-b-flavoured hadrons is (75.3 +/- 5.4 +/- 13.0) microbarns. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.2731v2-abstract-full').style.display = 'none'; document.getElementById('1009.2731v2-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 October, 2010; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 September, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2010. </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">11 pages, 5 figures, to be published in Physics Lett. B; v2 minor changes</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LHCb-PAPER-2010-002; CERN-PH-EP-2010-029 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Lett.B694:209-216,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0205127">arXiv:hep-ph/0205127</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0205127">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0205127">ps</a>, <a href="https://arxiv.org/format/hep-ph/0205127">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 - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0954-3899/28/9/313">10.1088/0954-3899/28/9/313 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Multiparticle Production in QCD Jets </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Andersen%2C+J+R">J. R. Andersen</a>, <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N. H. Brook</a>, <a href="/search/hep-ph?searchtype=author&query=Dokshitzer%2C+Y+L">Yu. L. Dokshitzer</a>, <a href="/search/hep-ph?searchtype=author&query=Khoze%2C+V+A">V. A. Khoze</a>, <a href="/search/hep-ph?searchtype=author&query=Kittel%2C+W">W. Kittel</a>, <a href="/search/hep-ph?searchtype=author&query=Ochs%2C+W">W. Ochs</a>, <a href="/search/hep-ph?searchtype=author&query=Stirling%2C+W+J">W. J. Stirling</a>, <a href="/search/hep-ph?searchtype=author&query=Zanderighi%2C+G">G. Zanderighi</a> </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="hep-ph/0205127v1-abstract-short" style="display: inline;"> We briefly summarise the main results presented at the IPPP Workshop on Multiparticle Production in QCD Jets, held in Durham in December 2001. </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0205127v1-abstract-full" style="display: none;"> We briefly summarise the main results presented at the IPPP Workshop on Multiparticle Production in QCD Jets, held in Durham in December 2001. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0205127v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0205127v1-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 May, 2002; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2002. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> IPPP/02/24, DCPT/02/48 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J.Phys.G28:2509-2522,2002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0011218">arXiv:hep-ph/0011218</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0011218">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0011218">ps</a>, <a href="https://arxiv.org/format/hep-ph/0011218">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 - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/S0370-2693(00)01336-8">10.1016/S0370-2693(00)01336-8 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Comparison of the Momentum Spectra in Deep Inelastic Scattering with the Modified Leading Logarithmic Approximation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N H Brook</a>, <a href="/search/hep-ph?searchtype=author&query=Skillicorn%2C+I+O">I O Skillicorn</a> </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="hep-ph/0011218v1-abstract-short" style="display: inline;"> The evolution of the logarithmic scaled energy spectra with energy scale, in the framework of the modified leading logarithmic approximation (MLLA), is investigated. The behaviour of the higher order moments of HERA deep inelastic scattering data are compared with the analytic predictions of MLLA. </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0011218v1-abstract-full" style="display: none;"> The evolution of the logarithmic scaled energy spectra with energy scale, in the framework of the modified leading logarithmic approximation (MLLA), is investigated. The behaviour of the higher order moments of HERA deep inelastic scattering data are compared with the analytic predictions of MLLA. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0011218v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0011218v1-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 November, 2000; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2000. </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 incl 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BRIS/HEP/2000-08 GLAS-PPE/2000-11 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Lett. B497 (2001) 55-61 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0003095">arXiv:hep-ph/0003095</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0003095">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0003095">ps</a>, <a href="https://arxiv.org/format/hep-ph/0003095">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 - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/S0370-2693(00)00349-X">10.1016/S0370-2693(00)00349-X <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Evolution of the MLLA Parton Spectra </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Brook%2C+N+H">N. H. Brook</a>, <a href="/search/hep-ph?searchtype=author&query=Skillicorn%2C+I+O">I. O. Skillicorn</a> </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="hep-ph/0003095v1-abstract-short" style="display: inline;"> The evolution with energy scale of the partonic logarithmic scaled energy spectra is investigated in the framework of the modified leading logarithmic approximation (MLLA). The behaviour of the higher order moments is compared to a number of analytic predictions and $\rm e^+e^-$ data. </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0003095v1-abstract-full" style="display: none;"> The evolution with energy scale of the partonic logarithmic scaled energy spectra is investigated in the framework of the modified leading logarithmic approximation (MLLA). The behaviour of the higher order moments is compared to a number of analytic predictions and $\rm e^+e^-$ data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0003095v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0003095v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 March, 2000; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2000. </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">11 pages. 5 postscript figures + 1 postscript logo + 1 LaTeX file + 1 style file</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BRIS/HEP/2000-01, GLAS-PPE-2000-01 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Lett. B479 (2000) 173-180 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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