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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Baudot%2C+J&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Baudot%2C+J&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Baudot%2C+J&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> <li> <a href="/search/?searchtype=author&query=Baudot%2C+J&start=100" class="pagination-link " aria-label="Page 3" aria-current="page">3 </a> </li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.09951">arXiv:2502.09951</a> <span> [<a href="https://arxiv.org/pdf/2502.09951">pdf</a>, <a href="https://arxiv.org/format/2502.09951">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Evidence of the P_ccbars(4459)0 in Upsilon(1S, 2S) inclusive decays at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Ahn%2C+J+K">J. K. Ahn</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Alhakami%2C+M">M. Alhakami</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Bartl%2C+M">M. Bartl</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a> , et al. (380 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="2502.09951v1-abstract-short" style="display: inline;"> Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy e+e- collider, we search for [udsccbar] pentaquark states decaying to Jpsi Lambda. Using the first observations of Upsilon(1S, 2S) inclusive decays to Jpsi Lambda, we find evidence of the P_ccbars(4459)0 state with a significance of 3.3 standard devi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.09951v1-abstract-full').style.display = 'inline'; document.getElementById('2502.09951v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.09951v1-abstract-full" style="display: none;"> Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy e+e- collider, we search for [udsccbar] pentaquark states decaying to Jpsi Lambda. Using the first observations of Upsilon(1S, 2S) inclusive decays to Jpsi Lambda, we find evidence of the P_ccbars(4459)0 state with a significance of 3.3 standard deviations, including statistical and systematic uncertainties. We measure the mass and width of the Pccbars(4459)0 to be (4471.7 +- 4.8 +- 0.6) MeV/c2 and (21.9 +- 13.1 +- 2.7) MeV, respectively. The branching fractions for P_ccbars(4459)0 production are measured to be B[Upsilon(1S) -> P_ccbars(4459)0/ Pbar_ccbars(4459)0 + anything] = (3.5 +- 2.0 +- 0.2)*10-6 and B[Upsilin(2S) -> P_ccbars(4459)0/ Pbar_ccbars(4459)0 +anything] = (2.9 +- 1.7 +- 0.4)*10-6. The inclusive branching fractions of Upsilon(1S, 2S) -> Jpsi Lambda/Lambdabar are measured to be B[Upsilin(1S) -> Jpsi Lambda/Lambdabar + anything] = (36.9 +- 5.3 +- 2.4)*10-6 and B[Upsilon(2S) -> Jpsi Lambda/Lambdabar + anything] = (22.3 +- 5.7 +- 3.1)*10-6. We measure the visible cross section sigma(e+e- -> Jpsi Lambda/Lambdabar + anything) = (90 +- 14 +- 6) fb for the continuum production at sqrt(s) = 10.52 GeV. In all cases, the first uncertainties are statistical and the second are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.09951v1-abstract-full').style.display = 'none'; document.getElementById('2502.09951v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2025-002, KEK Preprint 2024-50 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.04885">arXiv:2502.04885</a> <span> [<a href="https://arxiv.org/pdf/2502.04885">pdf</a>, <a href="https://arxiv.org/format/2502.04885">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of $B^+\to蟿^+谓_蟿$ branching fraction with a hadronic tagging method at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Ahn%2C+Y">Y. Ahn</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Alhakami%2C+M">M. Alhakami</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Angelsmark%2C+M">M. Angelsmark</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bartl%2C+M">M. Bartl</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a> , et al. (319 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="2502.04885v1-abstract-short" style="display: inline;"> We present a measurement of the branching fraction of $B^+\to蟿^+谓_蟿$ decays using $(387\pm6)\times 10^6$ $违(4S)$ collected between 2019 and 2022 with the Belle II detector at the SuperKEKB $e^+e^-$ collider. We reconstruct the accompanying $B^-$ meson using the hadronic tagging method, while $B^+\to蟿^+谓_蟿$ candidates are identified in the recoil. We find evidence for $B^+\to蟿^+谓_蟿$ decays at 3.0 s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.04885v1-abstract-full').style.display = 'inline'; document.getElementById('2502.04885v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.04885v1-abstract-full" style="display: none;"> We present a measurement of the branching fraction of $B^+\to蟿^+谓_蟿$ decays using $(387\pm6)\times 10^6$ $违(4S)$ collected between 2019 and 2022 with the Belle II detector at the SuperKEKB $e^+e^-$ collider. We reconstruct the accompanying $B^-$ meson using the hadronic tagging method, while $B^+\to蟿^+谓_蟿$ candidates are identified in the recoil. We find evidence for $B^+\to蟿^+谓_蟿$ decays at 3.0 standard deviations, including systematic uncertainties. The measured branching fraction is $\mathcal{B}(B^+\to蟿^+谓_蟿) = [1.24 \pm 0.41 (\text{stat.}) \pm 0.19 (\text{syst.})] \times 10^{-4}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.04885v1-abstract-full').style.display = 'none'; document.getElementById('2502.04885v1-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II preprint 2024-033, KEK preprint 2024-48 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.04858">arXiv:2502.04858</a> <span> [<a href="https://arxiv.org/pdf/2502.04858">pdf</a>, <a href="https://arxiv.org/format/2502.04858">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Integration Concept of the CBM Micro Vertex Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Matejcek%2C+F">Franz Matejcek</a>, <a href="/search/hep-ex?searchtype=author&query=Altingun%2C+A">Ali-Murteza Altingun</a>, <a href="/search/hep-ex?searchtype=author&query=Andary%2C+J">Julio Andary</a>, <a href="/search/hep-ex?searchtype=author&query=Arnoldi-Meadows%2C+B">Benedict Arnoldi-Meadows</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">Jerome Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bertolone%2C+G">Gregory Bertolone</a>, <a href="/search/hep-ex?searchtype=author&query=Besson%2C+A">Auguste Besson</a>, <a href="/search/hep-ex?searchtype=author&query=Bialas%2C+N">Norbert Bialas</a>, <a href="/search/hep-ex?searchtype=author&query=Braun%2C+C">Christopher Braun</a>, <a href="/search/hep-ex?searchtype=author&query=Bugiel%2C+R">Roma Bugiel</a>, <a href="/search/hep-ex?searchtype=author&query=Claus%2C+G">Gilles Claus</a>, <a href="/search/hep-ex?searchtype=author&query=Colledani%2C+C">Claude Colledani</a>, <a href="/search/hep-ex?searchtype=author&query=Darwish%2C+H">Hasan Darwish</a>, <a href="/search/hep-ex?searchtype=author&query=Deveaux%2C+M">Michael Deveaux</a>, <a href="/search/hep-ex?searchtype=author&query=Dorokhov%2C+A">Andrei Dorokhov</a>, <a href="/search/hep-ex?searchtype=author&query=Dozi%C3%A8re%2C+G">Guy Dozi猫re</a>, <a href="/search/hep-ex?searchtype=author&query=Bitar%2C+Z+E">Ziad El Bitar</a>, <a href="/search/hep-ex?searchtype=author&query=Fr%C3%B6hlich%2C+I">Ingo Fr枚hlich</a>, <a href="/search/hep-ex?searchtype=author&query=Goffe%2C+M">Mathieu Goffe</a>, <a href="/search/hep-ex?searchtype=author&query=Gutsche%2C+B">Benedikt Gutsche</a>, <a href="/search/hep-ex?searchtype=author&query=Himmi%2C+A">Abdelkader Himmi</a>, <a href="/search/hep-ex?searchtype=author&query=Hu-Guo%2C+C">Christine Hu-Guo</a>, <a href="/search/hep-ex?searchtype=author&query=Jaaskelainen%2C+K">Kimmo Jaaskelainen</a>, <a href="/search/hep-ex?searchtype=author&query=Keller%2C+O">Oliver Keller</a>, <a href="/search/hep-ex?searchtype=author&query=Koziel%2C+M">Michal Koziel</a> , et al. (13 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="2502.04858v1-abstract-short" style="display: inline;"> The Micro Vertex Detector (MVD) is the most upstream detector of the fixed-target Compressed Baryonic Matter Experiment (CBM) at the future Facility for Antiproton and Ion Research (FAIR). It enables high-precision low-momentum tracking in direct proximity of the target. Reaching the stringent requirements for the MVD, a material budget of~$0.3\,-\,0.5\%\,X_0$ per layer, operating the dedicated CM… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.04858v1-abstract-full').style.display = 'inline'; document.getElementById('2502.04858v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.04858v1-abstract-full" style="display: none;"> The Micro Vertex Detector (MVD) is the most upstream detector of the fixed-target Compressed Baryonic Matter Experiment (CBM) at the future Facility for Antiproton and Ion Research (FAIR). It enables high-precision low-momentum tracking in direct proximity of the target. Reaching the stringent requirements for the MVD, a material budget of~$0.3\,-\,0.5\%\,X_0$ per layer, operating the dedicated CMOS MAPS~(`MIMOSIS') in the target vacuum, the strong magnetic dipole field, and a harsh radiation environment~(5\,Mrad, $7\times10^{13}\,n_{\text{eq}}/\text{cm}^2$ per CBM year), poses an unprecedented integration challenge. In this paper, the integration concept of the detector is be outlined, elaborating on the selection and preparation of materials, assembly procedures, and quality assessment steps in the ongoing preparation of pre-series production and detector commissioning in 2028. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.04858v1-abstract-full').style.display = 'none'; document.getElementById('2502.04858v1-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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">Titlepage + 5 pages, 9 figures, proceedings for Pixel 2024</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.04070">arXiv:2502.04070</a> <span> [<a href="https://arxiv.org/pdf/2502.04070">pdf</a>, <a href="https://arxiv.org/format/2502.04070">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Performance studies of the CE-65v2 MAPS prototype structure </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ilg%2C+A">A. Ilg</a>, <a href="/search/hep-ex?searchtype=author&query=Lorenzetti%2C+A">A. Lorenzetti</a>, <a href="/search/hep-ex?searchtype=author&query=Baba%2C+H">H. Baba</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Besson%2C+A">A. Besson</a>, <a href="/search/hep-ex?searchtype=author&query=Bugiel%2C+S">S. Bugiel</a>, <a href="/search/hep-ex?searchtype=author&query=Chujo%2C+T">T. Chujo</a>, <a href="/search/hep-ex?searchtype=author&query=Colledani%2C+C">C. Colledani</a>, <a href="/search/hep-ex?searchtype=author&query=Dorokhov%2C+A">A. Dorokhov</a>, <a href="/search/hep-ex?searchtype=author&query=Bitar%2C+Z+E">Z. El Bitar</a>, <a href="/search/hep-ex?searchtype=author&query=Goffe%2C+M">M. Goffe</a>, <a href="/search/hep-ex?searchtype=author&query=Gunji%2C+T">T. Gunji</a>, <a href="/search/hep-ex?searchtype=author&query=Hu-Guo%2C+C">C. Hu-Guo</a>, <a href="/search/hep-ex?searchtype=author&query=Jaaskelainen%2C+K">K. Jaaskelainen</a>, <a href="/search/hep-ex?searchtype=author&query=Katsuno%2C+T">T. Katsuno</a>, <a href="/search/hep-ex?searchtype=author&query=Kluge%2C+A">A. Kluge</a>, <a href="/search/hep-ex?searchtype=author&query=Kostina%2C+A">A. Kostina</a>, <a href="/search/hep-ex?searchtype=author&query=Kumar%2C+A">A. Kumar</a>, <a href="/search/hep-ex?searchtype=author&query=Macchiolo%2C+A">A. Macchiolo</a>, <a href="/search/hep-ex?searchtype=author&query=Mager%2C+M">M. Mager</a>, <a href="/search/hep-ex?searchtype=author&query=Park%2C+J">J. Park</a>, <a href="/search/hep-ex?searchtype=author&query=Ploerer%2C+E">E. Ploerer</a>, <a href="/search/hep-ex?searchtype=author&query=Sakai%2C+S">S. Sakai</a>, <a href="/search/hep-ex?searchtype=author&query=Senyukov%2C+S">S. Senyukov</a>, <a href="/search/hep-ex?searchtype=author&query=Shamas%2C+H">H. Shamas</a> , et al. (8 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="2502.04070v4-abstract-short" style="display: inline;"> With the next upgrade of the ALICE inner tracking system (ITS3) as its primary focus, a set of small MAPS test structures have been developed in the 65 nm TPSCo CMOS process. The CE-65 focuses on the characterisation of the analogue charge collection properties of this technology. The latest iteration, the CE-65v2, was produced in different processes (standard, with a low-dose n-type blanket, and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.04070v4-abstract-full').style.display = 'inline'; document.getElementById('2502.04070v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.04070v4-abstract-full" style="display: none;"> With the next upgrade of the ALICE inner tracking system (ITS3) as its primary focus, a set of small MAPS test structures have been developed in the 65 nm TPSCo CMOS process. The CE-65 focuses on the characterisation of the analogue charge collection properties of this technology. The latest iteration, the CE-65v2, was produced in different processes (standard, with a low-dose n-type blanket, and blanket with gap between pixels), pixel pitches (15, 18, 22.5 $渭$m), and pixel arrangements (square or staggered). The comparatively large pixel array size of $48\times24$ pixels in CE-65v2 allows the uniformity of the pixel response to be studied, among other benefits. The CE-65v2 chip was characterised in a test beam at the CERN SPS. A first analysis showed that hit efficiencies of $\geq 99\%$ and spatial resolution better than 5 $渭$m can be achieved for all pitches and process variants. For the standard process, thanks to larger charge sharing, even spatial resolutions below 3 $渭$m are reached, in line with vertex detector requirements for the FCC-ee. This contribution further investigates the data collected at the SPS test beam. Thanks to the large sensor size and efficient data collection, a large amount of statistics was collected, which allows for detailed in-pixel studies to see the efficiency and spatial resolution as a function of the hit position within the pixels. Again, different pitches and process variants are compared. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.04070v4-abstract-full').style.display = 'none'; document.getElementById('2502.04070v4-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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 pages, 3 figures, 1 table, Pixel 2024 conference proceeding</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.19624">arXiv:2412.19624</a> <span> [<a href="https://arxiv.org/pdf/2412.19624">pdf</a>, <a href="https://arxiv.org/format/2412.19624">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the branching fraction, polarization, and time-dependent $CP$ asymmetry in $B^0 \to 蟻^+蟻^-$ decays and constraint on the CKM angle $蠁_2$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Alhakami%2C+M">M. Alhakami</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Bartl%2C+M">M. Bartl</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a> , et al. (355 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="2412.19624v1-abstract-short" style="display: inline;"> We present a measurement of the branching fraction and fraction of longitudinal polarization of $B^0 \to 蟻^+ 蟻^-$ decays, which have two $蟺^0$'s in the final state. We also measure time-dependent $CP$ violation parameters for decays into longitudinally polarized $蟻^+ 蟻^-$ pairs. This analysis is based on a data sample containing $(387\pm6) \times 10^6$ \BBbar pairs collected with the Belle~II dete… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.19624v1-abstract-full').style.display = 'inline'; document.getElementById('2412.19624v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.19624v1-abstract-full" style="display: none;"> We present a measurement of the branching fraction and fraction of longitudinal polarization of $B^0 \to 蟻^+ 蟻^-$ decays, which have two $蟺^0$'s in the final state. We also measure time-dependent $CP$ violation parameters for decays into longitudinally polarized $蟻^+ 蟻^-$ pairs. This analysis is based on a data sample containing $(387\pm6) \times 10^6$ \BBbar pairs collected with the Belle~II detector at the SuperKEKB asymmetric-energy $e^+e^-$ collider in 2019-2022. We obtain ${B}(B^0\to蟻^+蟻^-) = (2.88 ^{+0.23}_{-0.22} {}^{+0.29}_{-0.27}) \times 10^{-5}, f_{L} = 0.921 ^{+0.024}_{-0.025} {}^{+0.017}_{-0.015}$, $S = -0.26\pm0.19\pm0.08$, and $C = -0.02\pm0.12^{+0.06}_{-0.05}$, where the first uncertainties are statistical and the second are systematic. We use these results to perform an isospin analysis to constrain the CKM angle $蠁_2$ and obtain two solutions; the result consistent with other Standard Model constraints is $蠁_2 = (92.6^{+4.5}_{-4.8})^\circ$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.19624v1-abstract-full').style.display = 'none'; document.getElementById('2412.19624v1-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II preprint 2024-024, KEK preprint 2024-23 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.16470">arXiv:2412.16470</a> <span> [<a href="https://arxiv.org/pdf/2412.16470">pdf</a>, <a href="https://arxiv.org/format/2412.16470">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for lepton flavor-violating decay modes $B^0\to K_S^0蟿^\pm\ell^\mp~(\ell=渭, e)$ with hadronic $B$-tagging at Belle and Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Alhakami%2C+M">M. Alhakami</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a> , et al. (403 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="2412.16470v1-abstract-short" style="display: inline;"> We present the first search for the lepton flavor-violating decay modes $B^0 \rightarrow K_S^0 蟿^\pm \ell^\mp~(\ell=渭, e)$ using the 711 fb$^{-1}$ and 365 fb$^{-1}$ data samples recorded by the Belle and Belle II detectors, respectively. We use a hadronic $B$-tagging technique, and search for the signal decay in the system recoiling against the fully reconstructed $B$ meson. We find no evidence fo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.16470v1-abstract-full').style.display = 'inline'; document.getElementById('2412.16470v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.16470v1-abstract-full" style="display: none;"> We present the first search for the lepton flavor-violating decay modes $B^0 \rightarrow K_S^0 蟿^\pm \ell^\mp~(\ell=渭, e)$ using the 711 fb$^{-1}$ and 365 fb$^{-1}$ data samples recorded by the Belle and Belle II detectors, respectively. We use a hadronic $B$-tagging technique, and search for the signal decay in the system recoiling against the fully reconstructed $B$ meson. We find no evidence for $B^0 \rightarrow K_S^0 蟿^\pm \ell^\mp$ decays and set 90\% confidence level upper limits on the branching fractions in the range of $[0.8,\,3.6]\times10^{-5}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.16470v1-abstract-full').style.display = 'none'; document.getElementById('2412.16470v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-031, KEK Preprint 2024-33 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.14260">arXiv:2412.14260</a> <span> [<a href="https://arxiv.org/pdf/2412.14260">pdf</a>, <a href="https://arxiv.org/format/2412.14260">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the branching fraction and $\it CP$-violating asymmetry of the decay $B^{0} \rightarrow 蟺^{0} 蟺^{0}$ using $387$ million bottom-antibottom meson pairs in Belle II data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Alhakami%2C+M">M. Alhakami</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Bartl%2C+M">M. Bartl</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a> , et al. (415 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="2412.14260v1-abstract-short" style="display: inline;"> We measure the branching fraction and $\it CP$-violating flavor-dependent rate asymmetry of $B^{0} \to 蟺^{0} 蟺^{0}$ decays reconstructed using the Belle II detector in an electron-positron collision sample containing $387 \times 10^{6}$ $B\overline{B}$ pairs. Using an optimized event selection, we find $126\pm 20$ signal decays in a fit to background-discriminating and flavor-sensitive distributio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.14260v1-abstract-full').style.display = 'inline'; document.getElementById('2412.14260v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.14260v1-abstract-full" style="display: none;"> We measure the branching fraction and $\it CP$-violating flavor-dependent rate asymmetry of $B^{0} \to 蟺^{0} 蟺^{0}$ decays reconstructed using the Belle II detector in an electron-positron collision sample containing $387 \times 10^{6}$ $B\overline{B}$ pairs. Using an optimized event selection, we find $126\pm 20$ signal decays in a fit to background-discriminating and flavor-sensitive distributions. The resulting branching fraction is $(1.25 \pm 0.23)\times 10^{-6}$ and the $\it CP$-violating asymmetry is $0.03 \pm 0.30$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.14260v1-abstract-full').style.display = 'none'; document.getElementById('2412.14260v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-032, KEK Preprint 2024-34 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.12338">arXiv:2412.12338</a> <span> [<a href="https://arxiv.org/pdf/2412.12338">pdf</a>, <a href="https://arxiv.org/ps/2412.12338">ps</a>, <a href="https://arxiv.org/format/2412.12338">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Observation of the decay $B^0 \to J/蠄蠅$ at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Alhakami%2C+M">M. Alhakami</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (361 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="2412.12338v2-abstract-short" style="display: inline;"> We measure the branching fraction of the decay $B^0 \to J/蠄蠅$ using data collected with the Belle II detector at the SuperKEKB collider. The data contain $(387 \pm 6) \times 10^6$ $B\overline{B}$ meson pairs produced in energy-asymmetric $e^+e^-$ collisions at the $违(4S)$ resonance. The measured branching fraction $\mathcal{B}(B^0 \to J/蠄蠅) = \left( 2.16 \pm 0.30 \pm 0.14 \right) \times 10^{-5}$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.12338v2-abstract-full').style.display = 'inline'; document.getElementById('2412.12338v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.12338v2-abstract-full" style="display: none;"> We measure the branching fraction of the decay $B^0 \to J/蠄蠅$ using data collected with the Belle II detector at the SuperKEKB collider. The data contain $(387 \pm 6) \times 10^6$ $B\overline{B}$ meson pairs produced in energy-asymmetric $e^+e^-$ collisions at the $违(4S)$ resonance. The measured branching fraction $\mathcal{B}(B^0 \to J/蠄蠅) = \left( 2.16 \pm 0.30 \pm 0.14 \right) \times 10^{-5}$, where the first uncertainty is statistical and the second is systematic, is more precise than previous results and constitutes the first observation of the decay with a significance of $6.5$ standard deviations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.12338v2-abstract-full').style.display = 'none'; document.getElementById('2412.12338v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II preprint: 2024-021, KEK preprint: 2024-18 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.10677">arXiv:2412.10677</a> <span> [<a href="https://arxiv.org/pdf/2412.10677">pdf</a>, <a href="https://arxiv.org/ps/2412.10677">ps</a>, <a href="https://arxiv.org/format/2412.10677">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"> Observations of the singly Cabibbo-suppressed decays $螢_c^{+} \to pK_{S}^{0}$, $螢_c^+ \to 螞蟺^+$, and $螢_c^+ \to 危^{0} 蟺^+$ at Belle and Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Alhakami%2C+M">M. Alhakami</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (323 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="2412.10677v1-abstract-short" style="display: inline;"> Using data samples of 983.0~$\rm fb^{-1}$ and 427.9~$\rm fb^{-1}$ accumulated with the Belle and Belle~II detectors operating at the KEKB and SuperKEKB asymmetric-energy $e^+e^-$ colliders, singly Cabibbo-suppressed decays $螢_c^{+} \to pK_{S}^{0}$, $螢_c^+ \to 螞蟺^+$, and $螢_c^+ \to 危^{0} 蟺^+$ are observed for the first time. The ratios of branching fractions of $螢_{c}^{+}\to p K_{S}^{0}$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.10677v1-abstract-full').style.display = 'inline'; document.getElementById('2412.10677v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.10677v1-abstract-full" style="display: none;"> Using data samples of 983.0~$\rm fb^{-1}$ and 427.9~$\rm fb^{-1}$ accumulated with the Belle and Belle~II detectors operating at the KEKB and SuperKEKB asymmetric-energy $e^+e^-$ colliders, singly Cabibbo-suppressed decays $螢_c^{+} \to pK_{S}^{0}$, $螢_c^+ \to 螞蟺^+$, and $螢_c^+ \to 危^{0} 蟺^+$ are observed for the first time. The ratios of branching fractions of $螢_{c}^{+}\to p K_{S}^{0}$, $螢_{c}^{+}\to 螞蟺^{+}$, and $螢_{c}^{+}\to 危^{0} 蟺^{+}$ relative to that of $螢_c^+ \to 螢^- 蟺^{+} 蟺^{+}$ are measured to be \begin{equation} \frac{{\cal B}(螢_c^+ \to pK_S^0)}{{\cal B}(螢_c^{+} \to 螢^{-} 蟺^+ 蟺^+)} = (2.47 \pm 0.16 \pm 0.07)\% \notag, \end{equation} \begin{equation} \frac{{\cal B}(螢_c^+ \to 螞蟺^+)}{{\cal B}(螢_c^{+} \to 螢^{-} 蟺^+ 蟺^+)} = (1.56 \pm 0.14 \pm 0.09)\% \notag, \end{equation} \begin{equation} \frac{{\cal B}(螢_c^+ \to 危^0 蟺^+)}{{\cal B}(螢_c^{+} \to 螢^{-} 蟺^+ 蟺^+)} = (4.13 \pm 0.26 \pm 0.22)\% \notag. \end{equation} Multiplying these values by the branching fraction of the normalization channel, ${\cal B}(螢_c^{+} \to 螢^{-} 蟺^+蟺^+) = (2.9 \pm 1.3)\%$, the absolute branching fractions are determined to be \begin{equation} {\cal B}(螢_c^{+} \to p K_{S}^{0}) = (7.16 \pm 0.46 \pm 0.20 \pm 3.21) \times 10^{-4} \notag, \end{equation} \begin{equation} {\cal B}(螢_c^{+} \to 螞蟺^+) = (4.52 \pm 0.41 \pm 0.26 \pm 2.03) \times 10^{-4} \notag, \end{equation} \begin{equation} {\cal B}(螢_c^{+} \to 危^0 蟺^+) = (1.20 \pm 0.08 \pm 0.07 \pm 0.54) \times 10^{-3} \notag. \end{equation} The first and second uncertainties above are statistical and systematic, respectively, while the third ones arise from the uncertainty in ${\cal B}(螢_c^{+} \to 螢^{-} 蟺^{+} 蟺^{+})$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.10677v1-abstract-full').style.display = 'none'; document.getElementById('2412.10677v1-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">21 pages, 5 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-028; KEK Preprint 2024-29 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.14032">arXiv:2411.14032</a> <span> [<a href="https://arxiv.org/pdf/2411.14032">pdf</a>, <a href="https://arxiv.org/format/2411.14032">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the inclusive branching fractions for $B_s^0$ decays into $D$ mesons via hadronic tagging </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Said%2C+S+A">S. Al Said</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a> , et al. (430 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.14032v1-abstract-short" style="display: inline;"> We report measurements of the absolute branching fractions $\mathcal{B}(B_s^0 \to D_s^{\pm} X)$, $\mathcal{B}(B_s^0 \to D^0/\bar{D}^0 X)$, and $\mathcal{B}(B_s^0 \to D^{\pm} X)$, where the latter is measured for the first time. The results are based on a 121.4\,fb$^{-1}$ data sample collected at the $违(10860)$ resonance by the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We rec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.14032v1-abstract-full').style.display = 'inline'; document.getElementById('2411.14032v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.14032v1-abstract-full" style="display: none;"> We report measurements of the absolute branching fractions $\mathcal{B}(B_s^0 \to D_s^{\pm} X)$, $\mathcal{B}(B_s^0 \to D^0/\bar{D}^0 X)$, and $\mathcal{B}(B_s^0 \to D^{\pm} X)$, where the latter is measured for the first time. The results are based on a 121.4\,fb$^{-1}$ data sample collected at the $违(10860)$ resonance by the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We reconstruct one $B_s^0$ meson in $e^+e^- \to 违(10860) \to B_s^{*} \bar{B}_s^{*}$ events and measure yields of $D_s^+$, $D^0$, and $D^+$ mesons in the rest of the event. We obtain $\mathcal{B}(B_s^0 \to D_s^{\pm} X) = (68.6 \pm 7.2 \pm 4.0)\%$, $\mathcal{B}(B_s^0 \to D^0/\bar{D}^0 X) = (21.5 \pm 6.1 \pm 1.8)\%$, and $\mathcal{B}(B_s^0 \to D^{\pm} X) = (12.6 \pm 4.6 \pm 1.3)\%$, where the first uncertainty is statistical and the second is systematic. Averaging with previous Belle measurements gives $\mathcal{B}(B_s^0 \to D_s^{\pm} X) = (63.4 \pm 4.5 \pm 2.2)\%$ and $\mathcal{B}(B_s^0 \to D^0/\bar{D}^0 X) = (23.9 \pm 4.1 \pm 1.8)\%$. For the $B_s^0$ production fraction at the $违(10860)$, we find $f_s = (21.4^{+1.5}_{-1.7})\%$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.14032v1-abstract-full').style.display = 'none'; document.getElementById('2411.14032v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 9 figures, submitted to JHEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-030, KEK Preprint 2024-32 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.10127">arXiv:2411.10127</a> <span> [<a href="https://arxiv.org/pdf/2411.10127">pdf</a>, <a href="https://arxiv.org/format/2411.10127">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of $B \to K{}^{*}(892)纬$ decays at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Bartl%2C+M">M. Bartl</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a> , et al. (429 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.10127v1-abstract-short" style="display: inline;"> We present measurements of $B \to K{}^{*}(892)纬$ decays using $365\,{\rm fb}^{-1}$ of data collected from 2019 to 2022 by the Belle~II experiment at the SuperKEKB asymmetric-energy $e^+e^-$ collider. The data sample contains $(387 \pm 6) \times 10^6$ $B\overline{B}$ events. We measure branching fractions ($\mathcal{B}$) and $C\!P$ asymmetries ($\mathcal{A}_{C\!P}$) for both $B^{0}\to K{}^{*0}纬$ an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.10127v1-abstract-full').style.display = 'inline'; document.getElementById('2411.10127v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.10127v1-abstract-full" style="display: none;"> We present measurements of $B \to K{}^{*}(892)纬$ decays using $365\,{\rm fb}^{-1}$ of data collected from 2019 to 2022 by the Belle~II experiment at the SuperKEKB asymmetric-energy $e^+e^-$ collider. The data sample contains $(387 \pm 6) \times 10^6$ $B\overline{B}$ events. We measure branching fractions ($\mathcal{B}$) and $C\!P$ asymmetries ($\mathcal{A}_{C\!P}$) for both $B^{0}\to K{}^{*0}纬$ and $B^{+}\to K{}^{*+}纬$ decays. The difference in $C\!P$ asymmetries ($螖\mathcal{A}_{C\!P}$) and the isospin asymmetry ($螖_{0+}$) between these neutral and charged channels are also measured. We obtain the following branching fractions and $C\!P$ asymmetries: $\mathcal{B} (B^{0} \to K{}^{*0}纬) = (4.14 \pm 0.10 \pm 0.11 ) \times 10^{-5}$, $\mathcal{B} (B^{+} \to K{}^{*+}纬) = (4.02 \pm 0.13 \pm 0.13 )\times 10^{-5}$, $\mathcal{A}_{C\!P} (B^{0} \to K{}^{*0}纬) = (-3.3 \pm 2.3 \pm 0.4 )\%$, and $\mathcal{A}_{C\!P} (B^{+} \to K{}^{*+}纬) = (-0.7 \pm 2.9 \pm 0.6 )\%$. The measured difference in $C\!P$ asymmetries is $螖\mathcal{A}_{C\!P} = (+2.6 \pm 3.8 \pm 0.7 )\%$, and the measured isospin asymmetry is $螖_{0+} = (+5.0 \pm 2.0 \pm 1.5 )\%$. The first uncertainties listed are statistical and the second are systematic. These results are consistent with world-average values and theory predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.10127v1-abstract-full').style.display = 'none'; document.getElementById('2411.10127v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-029; KEK Preprint 2024-31 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.08740">arXiv:2411.08740</a> <span> [<a href="https://arxiv.org/pdf/2411.08740">pdf</a>, <a href="https://arxiv.org/format/2411.08740">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Characterisation of analogue MAPS produced in the 65 nm TPSCo process </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ploerer%2C+E">Eduardo Ploerer</a>, <a href="/search/hep-ex?searchtype=author&query=Baba%2C+H">Hitoshi Baba</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">Jerome Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Besson%2C+A">Auguste Besson</a>, <a href="/search/hep-ex?searchtype=author&query=Bugiel%2C+S">Szymon Bugiel</a>, <a href="/search/hep-ex?searchtype=author&query=Chujo%2C+T">Tatsuya Chujo</a>, <a href="/search/hep-ex?searchtype=author&query=Colledani%2C+C">Claude Colledani</a>, <a href="/search/hep-ex?searchtype=author&query=Dorokhov%2C+A">Andrei Dorokhov</a>, <a href="/search/hep-ex?searchtype=author&query=Bitar%2C+Z+E">Ziad El Bitar</a>, <a href="/search/hep-ex?searchtype=author&query=Goffe%2C+M">Mathieu Goffe</a>, <a href="/search/hep-ex?searchtype=author&query=Gunji%2C+T">Taku Gunji</a>, <a href="/search/hep-ex?searchtype=author&query=Hu-Guo%2C+C">Christine Hu-Guo</a>, <a href="/search/hep-ex?searchtype=author&query=Ilg%2C+A">Armin Ilg</a>, <a href="/search/hep-ex?searchtype=author&query=Jaaskelainen%2C+K">Kimmo Jaaskelainen</a>, <a href="/search/hep-ex?searchtype=author&query=Katsuno%2C+T">Towa Katsuno</a>, <a href="/search/hep-ex?searchtype=author&query=Kluge%2C+A">Alexander Kluge</a>, <a href="/search/hep-ex?searchtype=author&query=Kostina%2C+A">Anhelina Kostina</a>, <a href="/search/hep-ex?searchtype=author&query=Kumar%2C+A">Ajit Kumar</a>, <a href="/search/hep-ex?searchtype=author&query=Lorenzetti%2C+A">Alessandra Lorenzetti</a>, <a href="/search/hep-ex?searchtype=author&query=Macchiolo%2C+A">Anna Macchiolo</a>, <a href="/search/hep-ex?searchtype=author&query=Mager%2C+M">Magnus Mager</a>, <a href="/search/hep-ex?searchtype=author&query=Park%2C+J">Jonghan Park</a>, <a href="/search/hep-ex?searchtype=author&query=Sakai%2C+S">Shingo Sakai</a>, <a href="/search/hep-ex?searchtype=author&query=Senyukov%2C+S">Serhiy Senyukov</a>, <a href="/search/hep-ex?searchtype=author&query=Shamas%2C+H">Hasan Shamas</a> , et al. (9 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.08740v1-abstract-short" style="display: inline;"> Within the context of the ALICE ITS3 collaboration, a set of MAPS small-scale test structures were developed using the 65 nm TPSCo CMOS imaging process with the upgrade of the ALICE inner tracking system as its primary focus. One such sensor, the Circuit Exploratoire 65 nm (CE-65), and its evolution the CE-65v2, were developed to explore charge collection properties for varying configurations incl… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.08740v1-abstract-full').style.display = 'inline'; document.getElementById('2411.08740v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.08740v1-abstract-full" style="display: none;"> Within the context of the ALICE ITS3 collaboration, a set of MAPS small-scale test structures were developed using the 65 nm TPSCo CMOS imaging process with the upgrade of the ALICE inner tracking system as its primary focus. One such sensor, the Circuit Exploratoire 65 nm (CE-65), and its evolution the CE-65v2, were developed to explore charge collection properties for varying configurations including collection layer process (standard, blanket, modified with gap), pixel pitch (15, 18, \SI{22.5}{\micro\meter}), and pixel geometry (square vs hexagonal/staggered). In this work the characterisation of the CE-65v2 chip, based on $^{55}$Fe lab measurements and test beams at CERN SPS, is presented. Matrix gain uniformity up to the $\mathcal{O}$(5\%) level was demonstrated for all considered chip configurations. The CE-65v2 chip achieves a spatial resolution of under \SI{2}{\micro\meter} during beam tests. Process modifications allowing for faster charge collection and less charge sharing result in decreased spatial resolution, but a considerably wider range of operation, with both the \SI{15}{\micro\meter} and \SI{22.5}{\micro\meter} chips achieving over 99\% efficiency up to a $\sim$180 e$^{-}$ seed threshold. The results serve to validate the 65 nm TPSCo CMOS process, as well as to motivate design choices in future particle detection experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.08740v1-abstract-full').style.display = 'none'; document.getElementById('2411.08740v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 12 figures; Proceedings for iWoRiD 2024 (Lisbon)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.00306">arXiv:2411.00306</a> <span> [<a href="https://arxiv.org/pdf/2411.00306">pdf</a>, <a href="https://arxiv.org/format/2411.00306">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.111.012015">10.1103/PhysRevD.111.012015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the time-integrated CP asymmetry in $D^{0}\rightarrow K^{0}_{S}K^{0}_{S}$ decays using Belle and Belle II data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Bartl%2C+M">M. Bartl</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a> , et al. (338 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.00306v3-abstract-short" style="display: inline;"> We measure the time-integrated CP asymmetry in $D^{0} \rightarrow K^{0}_{S}K^{0}_{S}$ decays reconstructed in $e^{+}e^{-} \rightarrow c\overline{c}$ events collected by the Belle and Belle II experiments. The corresponding data samples have integrated luminosities of 980 fb$^{-1}$ and 428 fb$^{-1}$, respectively. The $D^{0}$ decays are required to originate from the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.00306v3-abstract-full').style.display = 'inline'; document.getElementById('2411.00306v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.00306v3-abstract-full" style="display: none;"> We measure the time-integrated CP asymmetry in $D^{0} \rightarrow K^{0}_{S}K^{0}_{S}$ decays reconstructed in $e^{+}e^{-} \rightarrow c\overline{c}$ events collected by the Belle and Belle II experiments. The corresponding data samples have integrated luminosities of 980 fb$^{-1}$ and 428 fb$^{-1}$, respectively. The $D^{0}$ decays are required to originate from the $D^{*+} \rightarrow D^{0}蟺^{+}$ decay, which determines the charm flavor at production time. A control sample of $D^{0} \rightarrow K^{+}K^{-}$ decays is used to correct for production and detection asymmetries. The result, $(-1.4\pm1.3{\rm(stat)}\pm0.1{\rm (syst)})\%$, is consistent with previous determinations and with CP symmetry. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.00306v3-abstract-full').style.display = 'none'; document.getElementById('2411.00306v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 3 figures. arXiv admin note: text overlap with arXiv:2410.22961</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> KEK Preprint 2024-26, Belle II Preprint 2024-026 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 111, 012015 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.22961">arXiv:2410.22961</a> <span> [<a href="https://arxiv.org/pdf/2410.22961">pdf</a>, <a href="https://arxiv.org/format/2410.22961">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Model-independent measurement of $D^0$-$\overline{D}{}^0$ mixing parameters in $D^0\rightarrow K^0_{S}蟺^+蟺^-$ decays at Belle and Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Bartl%2C+M">M. Bartl</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (317 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.22961v3-abstract-short" style="display: inline;"> We perform a model-independent measurement of the $D^0$-$\overline{D}{}^0$ mixing parameters using samples of $e^+e^-$-collision data collected by the Belle and Belle II experiments that have integrated luminosities of $951\ \text{fb}^{-1}$ and $408\ \text{fb}^{-1}$, respectively. Approximately $2.05\times10^6$ neutral $D$ mesons are reconstructed in the $D^0\rightarrow K^0_{S}蟺^+蟺^-$ channel, wit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.22961v3-abstract-full').style.display = 'inline'; document.getElementById('2410.22961v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.22961v3-abstract-full" style="display: none;"> We perform a model-independent measurement of the $D^0$-$\overline{D}{}^0$ mixing parameters using samples of $e^+e^-$-collision data collected by the Belle and Belle II experiments that have integrated luminosities of $951\ \text{fb}^{-1}$ and $408\ \text{fb}^{-1}$, respectively. Approximately $2.05\times10^6$ neutral $D$ mesons are reconstructed in the $D^0\rightarrow K^0_{S}蟺^+蟺^-$ channel, with the neutral $D$ flavor tagged by the charge of the pion in the $D^{*+}\rightarrow D^0蟺^+$ decay. Assuming charge-parity symmetry, the mixing parameters are measured to be $ x = (4.0\pm1.7\pm0.4)\times 10^{-3} $ and $ y = (2.9\pm1.4\pm0.3)\times 10^{-3}$, where the first uncertainties are statistical and the second systematic. The results are consistent with previous determinations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.22961v3-abstract-full').style.display = 'none'; document.getElementById('2410.22961v3-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-027; KEK Preprint 2024-27 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.08622">arXiv:2410.08622</a> <span> [<a href="https://arxiv.org/pdf/2410.08622">pdf</a>, <a href="https://arxiv.org/format/2410.08622">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.111.012011">10.1103/PhysRevD.111.012011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of time-dependent $CP$ violation and measurement of the branching fraction of $B^0 \to J/蠄蟺^0$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a> , et al. (369 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.08622v2-abstract-short" style="display: inline;"> We present a measurement of the branching fraction and time-dependent charge-parity ($CP$) decay-rate asymmetries in $B^0 \to J/蠄蟺^0$ decays. The data sample was collected with the Belle~II detector at the SuperKEKB asymmetric $e^+e^-$ collider in 2019-2022 and contains $(387\pm 6)\times 10^6$ $B\overline{B}$ meson pairs from $违(4S)$ decays. We reconstruct $392\pm 24$ signal decays and fit the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.08622v2-abstract-full').style.display = 'inline'; document.getElementById('2410.08622v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.08622v2-abstract-full" style="display: none;"> We present a measurement of the branching fraction and time-dependent charge-parity ($CP$) decay-rate asymmetries in $B^0 \to J/蠄蟺^0$ decays. The data sample was collected with the Belle~II detector at the SuperKEKB asymmetric $e^+e^-$ collider in 2019-2022 and contains $(387\pm 6)\times 10^6$ $B\overline{B}$ meson pairs from $违(4S)$ decays. We reconstruct $392\pm 24$ signal decays and fit the $CP$ parameters from the distribution of the proper-decay-time difference of the two $B$ mesons. We measure the branching fraction to be $B(B^0 \to J/蠄蟺^0)=(2.00 \pm 0.12 \pm 0.09)\times 10^{-5}$ and the direct and mixing-induced $CP$ asymmetries to be $C_{CP}=0.13 \pm 0.12 \pm 0.03$ and $S_{CP}=-0.88 \pm 0.17 \pm 0.03$, respectively, where the first uncertainties are statistical and the second are systematic. We observe mixing-induced $CP$ violation with a significance of $5.0$ standard deviations for the first time in this mode. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.08622v2-abstract-full').style.display = 'none'; document.getElementById('2410.08622v2-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II preprint: 2024-018, KEK preprint: 2024-14 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 111, 012011 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.15777">arXiv:2409.15777</a> <span> [<a href="https://arxiv.org/pdf/2409.15777">pdf</a>, <a href="https://arxiv.org/format/2409.15777">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for $C\!P$ violation in $D^+_{(s)}\to{}K_{S}^{0}K^{-}蟺^{+}蟺^{+}$ decays using triple and quadruple products </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baghel%2C+N+K">N. K. Baghel</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a> , et al. (344 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.15777v2-abstract-short" style="display: inline;"> We perform the first search for $C\!P$ violation in ${D_{(s)}^{+}\to{}K_{S}^{0}K^{-}蟺^{+}蟺^{+}}$ decays. We use a combined data set from the Belle and Belle II experiments, which study $e^+e^-$ collisions at center-of-mass energies at or near the $违(4S)$ resonance. We use 980 fb$^{-1}$ of data from Belle and 428 fb$^{-1}$ of data from Belle~II. We measure six $C\!P$-violating asymmetries that are… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.15777v2-abstract-full').style.display = 'inline'; document.getElementById('2409.15777v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.15777v2-abstract-full" style="display: none;"> We perform the first search for $C\!P$ violation in ${D_{(s)}^{+}\to{}K_{S}^{0}K^{-}蟺^{+}蟺^{+}}$ decays. We use a combined data set from the Belle and Belle II experiments, which study $e^+e^-$ collisions at center-of-mass energies at or near the $违(4S)$ resonance. We use 980 fb$^{-1}$ of data from Belle and 428 fb$^{-1}$ of data from Belle~II. We measure six $C\!P$-violating asymmetries that are based on triple products and quadruple products of the momenta of final-state particles, and also the particles' helicity angles. We obtain a precision at the level of 0.5% for $D^+\to{}K_{S}^{0}K^{-}蟺^{+}蟺^{+}$ decays, and better than 0.3% for $D^+_{s}\to{}K_{S}^{0}K^{-}蟺^{+}蟺^{+}$ decays. No evidence of $C\!P$ violation is found. Our results for the triple-product asymmetries are the most precise to date for singly-Cabibbo-suppressed $D^+$ decays. Our results for the other asymmetries are the first such measurements performed for charm decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.15777v2-abstract-full').style.display = 'none'; document.getElementById('2409.15777v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">21 pages, 10 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-025, KEK Preprint 2024-24, UCHEP-24-05 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.17403">arXiv:2407.17403</a> <span> [<a href="https://arxiv.org/pdf/2407.17403">pdf</a>, <a href="https://arxiv.org/format/2407.17403">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Determination of $|V_{ub}|$ from simultaneous measurements of untagged $B^0\to蟺^- \ell^+ 谓_{\ell}$ and $B^+\to蟻^0 \ell^+谓_{\ell}$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (395 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="2407.17403v1-abstract-short" style="display: inline;"> We present a measurement of $|V_{ub}|$ from a simultaneous study of the charmless semileptonic decays $B^0\to蟺^- \ell^+ 谓_{\ell}$ and $B^+\to蟻^0 \ell^+谓_{\ell}$, where $\ell = e, 渭$. This measurement uses a data sample of 387 million $B\overline{B}$ meson pairs recorded by the Belle~II detector at the SuperKEKB electron-positron collider between 2019 and 2022. The two decays are reconstructed with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.17403v1-abstract-full').style.display = 'inline'; document.getElementById('2407.17403v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.17403v1-abstract-full" style="display: none;"> We present a measurement of $|V_{ub}|$ from a simultaneous study of the charmless semileptonic decays $B^0\to蟺^- \ell^+ 谓_{\ell}$ and $B^+\to蟻^0 \ell^+谓_{\ell}$, where $\ell = e, 渭$. This measurement uses a data sample of 387 million $B\overline{B}$ meson pairs recorded by the Belle~II detector at the SuperKEKB electron-positron collider between 2019 and 2022. The two decays are reconstructed without identifying the partner $B$ mesons. We simultaneously measure the differential branching fractions of $B^0\to蟺^- \ell^+ 谓_{\ell}$ and $B^+\to蟻^0 \ell^+谓_{\ell}$ decays as functions of $q^2$ (momentum transfer squared). From these, we obtain total branching fractions $B(B^0\to蟺^- \ell^+ 谓_{\ell}) = (1.516 \pm 0.042 (\mathrm{stat}) \pm 0.059 (\mathrm{syst})) \times 10^{-4}$ and $B(B^+\to蟻^0 \ell^+谓_{\ell}) = (1.625 \pm 0.079 (\mathrm{stat}) \pm 0.180 (\mathrm{syst})) \times 10^{-4}$. By fitting the measured $B^0\to蟺^- \ell^+ 谓_{\ell}$ partial branching fractions as functions of $q^2$, together with constraints on the non-perturbative hadronic contribution from lattice QCD calculations, we obtain $|V_{ub}|$ = $(3.93 \pm 0.09 \pm 0.13 \pm 0.19) \times 10^{-3}$. Here, the first uncertainty is statistical, the second is systematic, and the third is theoretical. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.17403v1-abstract-full').style.display = 'none'; document.getElementById('2407.17403v1-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 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-023, KEK Preprint 2024-21 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.09139">arXiv:2407.09139</a> <span> [<a href="https://arxiv.org/pdf/2407.09139">pdf</a>, <a href="https://arxiv.org/format/2407.09139">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of $CP$ asymmetries in $B^0 \to K^0_S 蟺^0 纬$ decays at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a> , et al. (414 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="2407.09139v1-abstract-short" style="display: inline;"> We report measurements of time-dependent $CP$ asymmetries in $B^0 \to K^0_S 蟺^0 纬$ decays based on a data sample of $(388\pm6)\times10^6$ $B\bar{B}$ events collected at the $违(4S)$ resonance with the Belle II detector. The Belle II experiment operates at the SuperKEKB asymmetric-energy $e^+e^-$ collider. We measure decay-time distributions to determine $CP$-violating parameters $S$ and $C$. We det… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.09139v1-abstract-full').style.display = 'inline'; document.getElementById('2407.09139v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.09139v1-abstract-full" style="display: none;"> We report measurements of time-dependent $CP$ asymmetries in $B^0 \to K^0_S 蟺^0 纬$ decays based on a data sample of $(388\pm6)\times10^6$ $B\bar{B}$ events collected at the $违(4S)$ resonance with the Belle II detector. The Belle II experiment operates at the SuperKEKB asymmetric-energy $e^+e^-$ collider. We measure decay-time distributions to determine $CP$-violating parameters $S$ and $C$. We determine these parameters for two ranges of $K^0_S 蟺^0$ invariant mass: $m(K^0_S 蟺^0)\in (0.8, 1.0)$ $GeV/c^2$, which is dominated by $B^0 \to K^{*0} (\to K^0_S 蟺^0) 纬$ decays, and a complementary region $m(K^0_S 蟺^0)\in (0.6, 0.8)\cup(1.0, 1.8)$ $GeV/c^2$. Our results have improved precision as compared to previous measurements and are consistent with theory predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.09139v1-abstract-full').style.display = 'none'; document.getElementById('2407.09139v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-009, KEK Preprint 2024-1 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.08984">arXiv:2407.08984</a> <span> [<a href="https://arxiv.org/pdf/2407.08984">pdf</a>, <a href="https://arxiv.org/ps/2407.08984">ps</a>, <a href="https://arxiv.org/format/2407.08984">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of branching fractions, CP asymmetry, and isospin asymmetry for $\boldsymbol{B\rightarrow蟻纬}$ decays using Belle and Belle II data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a> , et al. (385 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="2407.08984v1-abstract-short" style="display: inline;"> We present measurements of $B^{+}\rightarrow蟻^{+}纬$ and $B^{0}\rightarrow蟻^{0}纬$ decays using a combined data sample of $772 \times 10^6$ $B\overline{B}$ pairs collected by the Belle experiment and $387\times 10^6$ $B\overline{B}$ pairs collected by the Belle II experiment in $e^{+}e^{-}$ collisions at the $违(4S)$ resonance. After an optimized selection, a simultaneous fit to the Belle and Belle I… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.08984v1-abstract-full').style.display = 'inline'; document.getElementById('2407.08984v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.08984v1-abstract-full" style="display: none;"> We present measurements of $B^{+}\rightarrow蟻^{+}纬$ and $B^{0}\rightarrow蟻^{0}纬$ decays using a combined data sample of $772 \times 10^6$ $B\overline{B}$ pairs collected by the Belle experiment and $387\times 10^6$ $B\overline{B}$ pairs collected by the Belle II experiment in $e^{+}e^{-}$ collisions at the $违(4S)$ resonance. After an optimized selection, a simultaneous fit to the Belle and Belle II data sets yields $114\pm 12$ $B^{+}\rightarrow蟻^{+}纬$ and $99\pm 12$ $B^{0}\rightarrow蟻^{0}纬$ decays. The measured branching fractions are $(13.1^{+2.0 +1.3}_{-1.9 -1.2})\times 10^{-7}$ and $(7.5\pm 1.3^{+1.0}_{-0.8})\times 10^{-7}$ for $B^{+}\rightarrow蟻^{+}纬$ and $B^{0}\rightarrow蟻^{0}纬$ decays, respectively, where the first uncertainty is statistical and the second is systematic. We also measure the isospin asymmetry $A_{\rm I}(B\rightarrow蟻纬)=(10.9^{+11.2 +7.8}_{-11.7 -7.3})\%$ and the direct CP asymmetry $A_{CP}(B^{+}\rightarrow蟻^{+}纬)=(-8.2\pm 15.2^{+1.6}_{-1.2})\%$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.08984v1-abstract-full').style.display = 'none'; document.getElementById('2407.08984v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-019; KEK Preprint 2023-37; UCHEP-24-04 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.05117">arXiv:2407.05117</a> <span> [<a href="https://arxiv.org/pdf/2407.05117">pdf</a>, <a href="https://arxiv.org/ps/2407.05117">ps</a>, <a href="https://arxiv.org/format/2407.05117">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for the baryon number and lepton number violating decays $蟿^-\to 螞蟺^-$ and $蟿^-\to \bar螞蟺^-$ at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (349 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="2407.05117v1-abstract-short" style="display: inline;"> We present a search for the baryon number $B$ and lepton number $L$ violating decays $蟿^- \rightarrow 螞蟺^-$ and $蟿^- \rightarrow \bar螞蟺^-$ produced from the $e^+e^-\to 蟿^+蟿^-$ process, using a 364 fb$^{-1}$ data sample collected by the Belle~II experiment at the SuperKEKB collider. No evidence of signal is found in either decay mode, which have $|螖(B-L)|$ equal to $2$ and $0$, respectively. Upper… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.05117v1-abstract-full').style.display = 'inline'; document.getElementById('2407.05117v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.05117v1-abstract-full" style="display: none;"> We present a search for the baryon number $B$ and lepton number $L$ violating decays $蟿^- \rightarrow 螞蟺^-$ and $蟿^- \rightarrow \bar螞蟺^-$ produced from the $e^+e^-\to 蟿^+蟿^-$ process, using a 364 fb$^{-1}$ data sample collected by the Belle~II experiment at the SuperKEKB collider. No evidence of signal is found in either decay mode, which have $|螖(B-L)|$ equal to $2$ and $0$, respectively. Upper limits at 90\% credibility level on the branching fractions of $蟿^- \rightarrow 螞蟺^-$ and $蟿^- \rightarrow \bar螞蟺^-$ are determined to be $4.7 \times 10^{-8}$ and $4.3 \times 10^{-8}$, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.05117v1-abstract-full').style.display = 'none'; document.getElementById('2407.05117v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-020; KEK Preprint 2024-17 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.00965">arXiv:2407.00965</a> <span> [<a href="https://arxiv.org/pdf/2407.00965">pdf</a>, <a href="https://arxiv.org/format/2407.00965">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1674-1137/ad806c">10.1088/1674-1137/ad806c <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle II experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=The+Belle+II+Collaboration"> The Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Ahn%2C+J+K">J. K. Ahn</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (382 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="2407.00965v2-abstract-short" style="display: inline;"> A series of data samples was collected with the Belle~II detector at the SuperKEKB collider from March 2019 to June 2022. We determine the integrated luminosities of these data samples using three distinct methodologies involving Bhabha ($e^+e^- \to e^+e^-(n纬)$), digamma ($e^+e^- \to 纬纬(n纬)$), and dimuon ($e^+e^- \to 渭^+ 渭^- (n纬)$) events. The total integrated luminosity obtained with Bhabha, diga… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.00965v2-abstract-full').style.display = 'inline'; document.getElementById('2407.00965v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.00965v2-abstract-full" style="display: none;"> A series of data samples was collected with the Belle~II detector at the SuperKEKB collider from March 2019 to June 2022. We determine the integrated luminosities of these data samples using three distinct methodologies involving Bhabha ($e^+e^- \to e^+e^-(n纬)$), digamma ($e^+e^- \to 纬纬(n纬)$), and dimuon ($e^+e^- \to 渭^+ 渭^- (n纬)$) events. The total integrated luminosity obtained with Bhabha, digamma, and dimuon events is ({426.88} $\pm$ 0.03 $\pm$ {2.61})~fb$^{-1}$, ({429.28} $\pm$ 0.03 $\pm$ {2.62})~fb$^{-1}$, and ({423.99} $\pm$ 0.04 $\pm$ {3.83})~fb$^{-1}$, where the first uncertainties are statistical and the second are systematic. The resulting total integrated luminosity obtained from the combination of the three methods is ({427.87 $\pm$ 2.01})~fb$^{-1}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.00965v2-abstract-full').style.display = 'none'; document.getElementById('2407.00965v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 3 figures; accepted for publication in Chinese Physics C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-019; KEK Preprint 2024-16 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Chin. Phys. C 49, 013001 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.19421">arXiv:2406.19421</a> <span> [<a href="https://arxiv.org/pdf/2406.19421">pdf</a>, <a href="https://arxiv.org/format/2406.19421">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="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> The Belle II Detector Upgrades Framework Conceptual Design Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Auguste%2C+D+P">D. P. Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babeluk%2C+M">M. Babeluk</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barbero%2C+M">M. Barbero</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Bergauer%2C+T">T. Bergauer</a>, <a href="/search/hep-ex?searchtype=author&query=Bernlochner.%2C+F+U">F. U. Bernlochner.</a>, <a href="/search/hep-ex?searchtype=author&query=Bertacchi%2C+V">V. Bertacchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bertolone%2C+G">G. Bertolone</a>, <a href="/search/hep-ex?searchtype=author&query=Bespin%2C+C">C. Bespin</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bettarini%2C+S">S. Bettarini</a>, <a href="/search/hep-ex?searchtype=author&query=Bevan%2C+A+J">A. J. Bevan</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bona%2C+M">M. Bona</a>, <a href="/search/hep-ex?searchtype=author&query=Bonis%2C+J+F">J. F. Bonis</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bosi%2C+F">F. Bosi</a>, <a href="/search/hep-ex?searchtype=author&query=Boudagga%2C+R">R. Boudagga</a> , et al. (186 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="2406.19421v2-abstract-short" style="display: inline;"> We describe the planned near-term and potential longer-term upgrades of the Belle II detector at the SuperKEKB electron-positron collider operating at the KEK laboratory in Tsukuba, Japan. These upgrades will allow increasingly sensitive searches for possible new physics beyond the Standard Model in flavor, tau, electroweak and dark sector physics that are both complementary to and competitive wit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.19421v2-abstract-full').style.display = 'inline'; document.getElementById('2406.19421v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.19421v2-abstract-full" style="display: none;"> We describe the planned near-term and potential longer-term upgrades of the Belle II detector at the SuperKEKB electron-positron collider operating at the KEK laboratory in Tsukuba, Japan. These upgrades will allow increasingly sensitive searches for possible new physics beyond the Standard Model in flavor, tau, electroweak and dark sector physics that are both complementary to and competitive with the LHC and other experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.19421v2-abstract-full').style.display = 'none'; document.getElementById('2406.19421v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Editor: F. Forti 170 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> KEK-REPORT-2024-1, BELLE2-REPORT-2024-042 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.06277">arXiv:2406.06277</a> <span> [<a href="https://arxiv.org/pdf/2406.06277">pdf</a>, <a href="https://arxiv.org/format/2406.06277">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP08(2024)206">10.1007/JHEP08(2024)206 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the branching fractions of $\bar{B}\to D^{(*)} K^- K^{(*)0}_{(S)}$ and $\bar{B}\to D^{(*)}D_s^{-}$ decays at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a> , et al. (382 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="2406.06277v4-abstract-short" style="display: inline;"> We present measurements of the branching fractions of eight $\overline B{}^0\to D^{(*)+} K^- K^{(*)0}_{(S)}$, $B^{-}\to D^{(*)0} K^- K^{(*)0}_{(S)}$ decay channels. The results are based on data from SuperKEKB electron-positron collisions at the $违(4S)$ resonance collected with the Belle II detector, corresponding to an integrated luminosity of $362~\text{fb}^{-1}$. The event yields are extracted… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.06277v4-abstract-full').style.display = 'inline'; document.getElementById('2406.06277v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.06277v4-abstract-full" style="display: none;"> We present measurements of the branching fractions of eight $\overline B{}^0\to D^{(*)+} K^- K^{(*)0}_{(S)}$, $B^{-}\to D^{(*)0} K^- K^{(*)0}_{(S)}$ decay channels. The results are based on data from SuperKEKB electron-positron collisions at the $违(4S)$ resonance collected with the Belle II detector, corresponding to an integrated luminosity of $362~\text{fb}^{-1}$. The event yields are extracted from fits to the distributions of the difference between expected and observed $B$ meson energy, and are efficiency-corrected as a function of $m(K^-K^{(*)0}_{(S)})$ and $m(D^{(*)}K^{(*)0}_{(S)})$ in order to avoid dependence on the decay model. These results include the first observation of $\overline B{}^0\to D^+K^-K_S^0$, $B^-\to D^{*0}K^-K_S^0$, and $\overline B{}^0\to D^{*+}K^-K_S^0$ decays and a significant improvement in the precision of the other channels compared to previous measurements. The helicity-angle distributions and the invariant mass distributions of the $K^- K^{(*)0}_{(S)}$ systems are compatible with quasi-two-body decays via a resonant transition with spin-parity $J^P=1^-$ for the $K^-K_S^0$ systems and $J^P= 1^+$ for the $K^-K^{*0}$ systems. We also present measurements of the branching fractions of four $\overline B{}^0\to D^{(*)+} D_s^-$, $B^{-}\to D^{(*)0} D_s^- $ decay channels with a precision compatible to the current world averages. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.06277v4-abstract-full').style.display = 'none'; document.getElementById('2406.06277v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">34 pages, 14 figures. arXiv admin note: text overlap with arXiv:2305.01321</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint: 2024-014, KEK Preprint: 2024-8 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. High Energ. Phys. 08 (2024) 206 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.04642">arXiv:2406.04642</a> <span> [<a href="https://arxiv.org/pdf/2406.04642">pdf</a>, <a href="https://arxiv.org/ps/2406.04642">ps</a>, <a href="https://arxiv.org/format/2406.04642">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/JHEP10(2024)045">10.1007/JHEP10(2024)045 <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 of $螢_{c}^{0}\to螢^{0}蟺^{0}$, $螢_{c}^{0}\to螢^{0}畏$, and $螢_{c}^{0}\to螢^{0}畏^{\prime}$ and asymmetry parameter of $螢_{c}^{0}\to螢^{0}蟺^{0}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (360 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="2406.04642v2-abstract-short" style="display: inline;"> We present a study of $螢_{c}^{0}\to螢^{0}蟺^{0}$, $螢_{c}^{0}\to螢^{0}畏$, and $螢_{c}^{0}\to螢^{0}畏^{\prime}$ decays using the Belle and Belle~II data samples, which have integrated luminosities of 980~$\mathrm{fb}^{-1}$ and 426~$\mathrm{fb}^{-1}$, respectively. We measure the following relative branching fractions… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.04642v2-abstract-full').style.display = 'inline'; document.getElementById('2406.04642v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.04642v2-abstract-full" style="display: none;"> We present a study of $螢_{c}^{0}\to螢^{0}蟺^{0}$, $螢_{c}^{0}\to螢^{0}畏$, and $螢_{c}^{0}\to螢^{0}畏^{\prime}$ decays using the Belle and Belle~II data samples, which have integrated luminosities of 980~$\mathrm{fb}^{-1}$ and 426~$\mathrm{fb}^{-1}$, respectively. We measure the following relative branching fractions $${\cal B}(螢_{c}^{0}\to螢^{0}蟺^{0})/{\cal B}(螢_{c}^{0}\to螢^{-}蟺^{+}) = 0.48 \pm 0.02 ({\rm stat}) \pm 0.03 ({\rm syst}) ,$$ $${\cal B}(螢_{c}^{0}\to螢^{0}畏)/{\cal B}(螢_{c}^{0}\to螢^{-}蟺^{+}) = 0.11 \pm 0.01 ({\rm stat}) \pm 0.01 ({\rm syst}) ,$$ $${\cal B}(螢_{c}^{0}\to螢^{0}畏^{\prime})/{\cal B}(螢_{c}^{0}\to螢^{-}蟺^{+}) = 0.08 \pm 0.02 ({\rm stat}) \pm 0.01 ({\rm syst}) $$ for the first time, where the uncertainties are statistical ($\rm stat$) and systematic ($\rm syst$). By multiplying by the branching fraction of the normalization mode, ${\mathcal B}(螢_{c}^{0}\to螢^{-}蟺^{+})$, we obtain the following absolute branching fraction results $(6.9 \pm 0.3 ({\rm stat}) \pm 0.5 ({\rm syst}) \pm 1.3 ({\rm norm})) \times 10^{-3}$, $(1.6 \pm 0.2 ({\rm stat}) \pm 0.2 ({\rm syst}) \pm 0.3 ({\rm norm})) \times 10^{-3}$, and $(1.2 \pm 0.3 ({\rm stat}) \pm 0.1 ({\rm syst}) \pm 0.2 ({\rm norm})) \times 10^{-3}$, for $螢_{c}^{0}$ decays to $螢^{0}蟺^{0}$, $螢^{0}畏$, and $螢^{0}畏^{\prime}$ final states, respectively. The third errors are from the uncertainty on ${\mathcal B}(螢_{c}^{0}\to螢^{-}蟺^{+})$. The asymmetry parameter for $螢_{c}^{0}\to螢^{0}蟺^{0}$ is measured to be $伪(螢_{c}^{0}\to螢^{0}蟺^{0}) = -0.90\pm0.15({\rm stat})\pm0.23({\rm syst})$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.04642v2-abstract-full').style.display = 'none'; document.getElementById('2406.04642v2-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 5 figures, accepted for publication by JHEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-015; KEK Preprint 2024-9 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP10(2024)045 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.19734">arXiv:2405.19734</a> <span> [<a href="https://arxiv.org/pdf/2405.19734">pdf</a>, <a href="https://arxiv.org/format/2405.19734">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.110.L031106">10.1103/PhysRevD.110.L031106 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the decay $B^{0}\to纬纬$ using Belle and Belle II data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Said%2C+S+A">S. Al Said</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a> , et al. (385 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="2405.19734v2-abstract-short" style="display: inline;"> We report the result of a search for the rare decay $B^{0} \to 纬纬$ using a combined dataset of $753\times10^{6}$ $B\bar{B}$ pairs collected by the Belle experiment and $387\times10^{6}$ $B\bar{B}$ pairs collected by the Belle II experiment from decays of the $\rm 违(4S)$ resonance produced in $e^{+}e^{-}$ collisions. A simultaneous fit to the Belle and Belle II data sets yields… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.19734v2-abstract-full').style.display = 'inline'; document.getElementById('2405.19734v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.19734v2-abstract-full" style="display: none;"> We report the result of a search for the rare decay $B^{0} \to 纬纬$ using a combined dataset of $753\times10^{6}$ $B\bar{B}$ pairs collected by the Belle experiment and $387\times10^{6}$ $B\bar{B}$ pairs collected by the Belle II experiment from decays of the $\rm 违(4S)$ resonance produced in $e^{+}e^{-}$ collisions. A simultaneous fit to the Belle and Belle II data sets yields $11.0^{+6.5}_{-5.5}$ signal events, corresponding to a 2.5$蟽$ significance. We determine the branching fraction $\mathcal{B}(B^{0} \to 纬纬) = (3.7^{+2.2}_{-1.8}(\rm stat)\pm0.5(\rm syst))\times10^{-8}$ and set a 90% credibility level upper limit of $\mathcal{B}(B^{0} \to 纬纬) < 6.4\times10^{-8}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.19734v2-abstract-full').style.display = 'none'; document.getElementById('2405.19734v2-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published in PRD(L)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint: 2024-017, KEK Preprint: 2024-13 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 110, L031106 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.18928">arXiv:2405.18928</a> <span> [<a href="https://arxiv.org/pdf/2405.18928">pdf</a>, <a href="https://arxiv.org/format/2405.18928">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the energy dependence of the $e^+e^- \to B\bar{B}$, $B\bar{B}{}^*$, and $B^*\bar{B}{}^*$ cross sections at Belle~II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a> , et al. (444 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="2405.18928v2-abstract-short" style="display: inline;"> We report measurements of the $e^+e^- \to B\bar{B}$, $B\bar{B}{}^*$, and $B^*\bar{B}{}^*$ cross sections at four energies, 10653, 10701, 10746 and 10805 MeV, using data collected by the Belle~II experiment. We reconstruct one $B$ meson in a large number of hadronic final states and use its momentum to identify the production process. In the first $2-5$ MeV above $B^*\bar{B}{}^*$ threshold, the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.18928v2-abstract-full').style.display = 'inline'; document.getElementById('2405.18928v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.18928v2-abstract-full" style="display: none;"> We report measurements of the $e^+e^- \to B\bar{B}$, $B\bar{B}{}^*$, and $B^*\bar{B}{}^*$ cross sections at four energies, 10653, 10701, 10746 and 10805 MeV, using data collected by the Belle~II experiment. We reconstruct one $B$ meson in a large number of hadronic final states and use its momentum to identify the production process. In the first $2-5$ MeV above $B^*\bar{B}{}^*$ threshold, the $e^+e^- \to B^*\bar{B}{}^*$ cross section increases rapidly. This may indicate the presence of a pole close to the threshold. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.18928v2-abstract-full').style.display = 'none'; document.getElementById('2405.18928v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">30 pages, 15 figures, version accepted by JHEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-016, KEK Preprint 2024-12 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.14625">arXiv:2405.14625</a> <span> [<a href="https://arxiv.org/pdf/2405.14625">pdf</a>, <a href="https://arxiv.org/format/2405.14625">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP08(2024)205">10.1007/JHEP08(2024)205 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Test of light-lepton universality in $蟿$ decays with the Belle II experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (406 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="2405.14625v2-abstract-short" style="display: inline;"> We present a measurement of the ratio $R_渭= \mathcal{B}(蟿^-\to 渭^-\bar谓_渭谓_蟿) / \mathcal{B}(蟿^-\to e^-\bar谓_e谓_蟿)$ of branching fractions $\mathcal{B}$ of the $蟿$ lepton decaying to muons or electrons using data collected with the Belle II detector at the SuperKEKB $e^+e^-$ collider. The sample has an integrated luminosity of $362\!\pm\!2\,\text{fb}^{-1}$ at a centre-of-mass energy of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.14625v2-abstract-full').style.display = 'inline'; document.getElementById('2405.14625v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.14625v2-abstract-full" style="display: none;"> We present a measurement of the ratio $R_渭= \mathcal{B}(蟿^-\to 渭^-\bar谓_渭谓_蟿) / \mathcal{B}(蟿^-\to e^-\bar谓_e谓_蟿)$ of branching fractions $\mathcal{B}$ of the $蟿$ lepton decaying to muons or electrons using data collected with the Belle II detector at the SuperKEKB $e^+e^-$ collider. The sample has an integrated luminosity of $362\!\pm\!2\,\text{fb}^{-1}$ at a centre-of-mass energy of $10.58\,\text{GeV}$. Using an optimised event selection, a binned maximum likelihood fit is performed using the momentum spectra of the electron and muon candidates. The result, $R_渭= 0.9675 \pm 0.0007 \pm 0.0036$, where the first uncertainty is statistical and the second is systematic, is the most precise to date. It provides a stringent test of the light-lepton universality, translating to a ratio of the couplings of the muon and electron to the $W$ boson in $蟿$ decays of $0.9974 \pm 0.0019$, in agreement with the standard model expectation of unity. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.14625v2-abstract-full').style.display = 'none'; document.getElementById('2405.14625v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-002, KEK Preprint 2023-49 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of High Energy Physics 08 (2024) 205 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.07386">arXiv:2405.07386</a> <span> [<a href="https://arxiv.org/pdf/2405.07386">pdf</a>, <a href="https://arxiv.org/format/2405.07386">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP09(2024)062">10.1007/JHEP09(2024)062 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for lepton-flavor-violating $蟿^- \to 渭^-渭^+渭^-$ decays at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Althubiti%2C+N">N. Althubiti</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (407 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="2405.07386v2-abstract-short" style="display: inline;"> We present the result of a search for the charged-lepton-flavor violating decay $蟿^- \to 渭^-渭^+渭^-$ using a $424fb^{-1}$ sample of data recorded by the Belle II experiment at the SuperKEKB $e^{-}e^{+}$ collider. The selection of $e^{-}e^{+}\to蟿^+蟿^-$ events is based on an inclusive reconstruction of the non-signal tau decay, and on a boosted decision tree to suppress background. We observe one sig… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.07386v2-abstract-full').style.display = 'inline'; document.getElementById('2405.07386v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.07386v2-abstract-full" style="display: none;"> We present the result of a search for the charged-lepton-flavor violating decay $蟿^- \to 渭^-渭^+渭^-$ using a $424fb^{-1}$ sample of data recorded by the Belle II experiment at the SuperKEKB $e^{-}e^{+}$ collider. The selection of $e^{-}e^{+}\to蟿^+蟿^-$ events is based on an inclusive reconstruction of the non-signal tau decay, and on a boosted decision tree to suppress background. We observe one signal candidate, which is compatible with the expectation from background processes. We set a $90\%$ confidence level upper limit of $1.9 \times 10^{-8}$ on the branching fraction of the \taumu decay, which is the most stringent bound to date. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.07386v2-abstract-full').style.display = 'none'; document.getElementById('2405.07386v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-012 KEK Preprint 2024-6 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. High Energ. Phys. 2024, 62 (2024). </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.12817">arXiv:2404.12817</a> <span> [<a href="https://arxiv.org/pdf/2404.12817">pdf</a>, <a href="https://arxiv.org/format/2404.12817">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Determination of the CKM angle $蠁_{3}$ from a combination of Belle and Belle II results </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Said%2C+S+A">S. Al Said</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (377 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="2404.12817v2-abstract-short" style="display: inline;"> We report a determination of the CKM angle $蠁_{3}$, also known as $纬$, from a combination of measurements using samples of up to 711~fb$^{-1}$ from the Belle experiment and up to 362~fb$^{-1}$ from the Belle II experiment. We combine results from analyses of $B^+\to DK^+, B^+\to D蟺^+$, and $B^+ \to D^{*}K^+$ decays, where $D$ is an admixture of $D^0$ and $\overline{D}{}^{0}$ mesons, in a likelihoo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.12817v2-abstract-full').style.display = 'inline'; document.getElementById('2404.12817v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.12817v2-abstract-full" style="display: none;"> We report a determination of the CKM angle $蠁_{3}$, also known as $纬$, from a combination of measurements using samples of up to 711~fb$^{-1}$ from the Belle experiment and up to 362~fb$^{-1}$ from the Belle II experiment. We combine results from analyses of $B^+\to DK^+, B^+\to D蟺^+$, and $B^+ \to D^{*}K^+$ decays, where $D$ is an admixture of $D^0$ and $\overline{D}{}^{0}$ mesons, in a likelihood fit to obtain $蠁_{3} = (78.6^{+7.2}_{-7.3})^{\circ}$. We also briefly discuss the interpretation of this result. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.12817v2-abstract-full').style.display = 'none'; document.getElementById('2404.12817v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">31 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-015, KEK Preprint 2023-31 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.10874">arXiv:2404.10874</a> <span> [<a href="https://arxiv.org/pdf/2404.10874">pdf</a>, <a href="https://arxiv.org/format/2404.10874">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.L111103">10.1103/PhysRevD.109.L111103 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the branching fraction of the decay $B^- \to D^0 蟻(770)^-$ at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a> , et al. (367 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="2404.10874v2-abstract-short" style="display: inline;"> We measure the branching fraction of the decay $B^- \to D^0 蟻(770)^-$ using data collected with the Belle II detector. The data contain 387 million $B\overline{B}$ pairs produced in $e^+e^-$ collisions at the $违(4S)$ resonance. We reconstruct $8360\pm 180$ decays from an analysis of the distributions of the $B^-$ energy and the $蟻(770)^-$ helicity angle. We determine the branching fraction to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.10874v2-abstract-full').style.display = 'inline'; document.getElementById('2404.10874v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.10874v2-abstract-full" style="display: none;"> We measure the branching fraction of the decay $B^- \to D^0 蟻(770)^-$ using data collected with the Belle II detector. The data contain 387 million $B\overline{B}$ pairs produced in $e^+e^-$ collisions at the $违(4S)$ resonance. We reconstruct $8360\pm 180$ decays from an analysis of the distributions of the $B^-$ energy and the $蟻(770)^-$ helicity angle. We determine the branching fraction to be $(0.939 \pm 0.021\mathrm{(stat)} \pm 0.050\mathrm{(syst)})\%$, in agreement with previous results. Our measurement improves the relative precision of the world average by more than a factor of two. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.10874v2-abstract-full').style.display = 'none'; document.getElementById('2404.10874v2-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 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-011, KEK Preprint 2024-4 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> PRD 109, 111103 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.08133">arXiv:2404.08133</a> <span> [<a href="https://arxiv.org/pdf/2404.08133">pdf</a>, <a href="https://arxiv.org/format/2404.08133">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.133.101804">10.1103/PhysRevLett.133.101804 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Rare $b \to d\ell^+\ell^-$ Transitions at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Said%2C+S+A">S. Al Said</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (371 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="2404.08133v2-abstract-short" style="display: inline;"> We present the results of a search for the $b \to d\ell^+\ell^-$ flavor-changing neutral-current rare decays $B^{+, 0} \to (畏, 蠅, 蟺^{+,0}, 蟻^{+, 0}) e^+e^-$ and $B^{+, 0} \to (畏, 蠅, 蟺^{0}, 蟻^{+}) 渭^+渭^-$ using a $711$ fb$^{-1}$ data sample that contains $772 \times 10^{6}$ $B\overline{B}$ events. The data were collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.08133v2-abstract-full').style.display = 'inline'; document.getElementById('2404.08133v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.08133v2-abstract-full" style="display: none;"> We present the results of a search for the $b \to d\ell^+\ell^-$ flavor-changing neutral-current rare decays $B^{+, 0} \to (畏, 蠅, 蟺^{+,0}, 蟻^{+, 0}) e^+e^-$ and $B^{+, 0} \to (畏, 蠅, 蟺^{0}, 蟻^{+}) 渭^+渭^-$ using a $711$ fb$^{-1}$ data sample that contains $772 \times 10^{6}$ $B\overline{B}$ events. The data were collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We find no evidence for signal and set upper limits on branching fractions at the $90\%$ confidence level in the range $(3.8 - 47) \times 10^{-8}$ depending on the decay channel. The obtained limits are the world's best results. This is the first search for the channels $B^{+, 0} \to (蠅, 蟻^{+,0}) e^+e^-$ and $B^{+, 0} \to (蠅, 蟻^{+})渭^+渭^-$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.08133v2-abstract-full').style.display = 'none'; document.getElementById('2404.08133v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 12 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-005, KEK Preprint 2023-52 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 133, 101804 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.04915">arXiv:2404.04915</a> <span> [<a href="https://arxiv.org/pdf/2404.04915">pdf</a>, <a href="https://arxiv.org/format/2404.04915">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.110.112005">10.1103/PhysRevD.110.112005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $e^+e^- \to 蟺^+蟺^-蟺^0$ cross section in the energy range 0.62-3.50 GeV at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a> , et al. (338 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="2404.04915v2-abstract-short" style="display: inline;"> We report a measurement of the $e^+e^- \to 蟺^+蟺^-蟺^0$ cross section in the energy range from 0.62 to 3.50 GeV using an initial-state radiation technique. We use an $e^+e^-$ data sample corresponding to 191 $\text{fb}^{-1}$ of integrated luminosity, collected at a center-of-mass energy at or near the $违{(4S)}$ resonance with the Belle II detector at the SuperKEKB collider. Signal yields are extract… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04915v2-abstract-full').style.display = 'inline'; document.getElementById('2404.04915v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.04915v2-abstract-full" style="display: none;"> We report a measurement of the $e^+e^- \to 蟺^+蟺^-蟺^0$ cross section in the energy range from 0.62 to 3.50 GeV using an initial-state radiation technique. We use an $e^+e^-$ data sample corresponding to 191 $\text{fb}^{-1}$ of integrated luminosity, collected at a center-of-mass energy at or near the $违{(4S)}$ resonance with the Belle II detector at the SuperKEKB collider. Signal yields are extracted by fitting the two-photon mass distribution in $e^+e^- \to 蟺^+蟺^-蟺^0纬$ events, which involve a $蟺^0 \to 纬纬$ decay and an energetic photon radiated from the initial state. Signal efficiency corrections with an accuracy of 1.6% are obtained from several control data samples. The uncertainty on the cross section at the $蠅$ and $蠁$ resonances is dominated by the systematic uncertainty of 2.2%. The resulting cross sections in the 0.62-1.80 GeV energy range yield $ a_渭^{3蟺} = [48.91 \pm 0.23~(\mathrm{stat}) \pm 1.07~(\mathrm{syst})] \times 10^{-10} $ for the leading-order hadronic vacuum polarization contribution to the muon anomalous magnetic moment. This result differs by $2.5$ standard deviations from the most precise current determination. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04915v2-abstract-full').style.display = 'none'; document.getElementById('2404.04915v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 24 figures, submitted to PRD</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> KEK Preprint 2023-51, Belle II Preprint 2024-004 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 110 (2024) 112005 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.02841">arXiv:2403.02841</a> <span> [<a href="https://arxiv.org/pdf/2403.02841">pdf</a>, <a href="https://arxiv.org/format/2403.02841">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.112015">10.1103/PhysRevD.109.112015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for a $渭^+渭^-$ resonance in four-muon final states at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a> , et al. (379 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="2403.02841v2-abstract-short" style="display: inline;"> We report on a search for a resonance $X$ decaying to a pair of muons in $e^{+}e^{-}\rightarrow 渭^+ 渭^- X$ events in the 0.212-9.000 GeV/$c^{2}$ mass range, using 178 fb$^{-1}$ of data collected by the BelleII experiment at the SuperKEKB collider at a center of mass energy of 10.58 GeV. The analysis probes two different models of $X$ beyond the standard model: a $Z^{\prime}$ vector boson in the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.02841v2-abstract-full').style.display = 'inline'; document.getElementById('2403.02841v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.02841v2-abstract-full" style="display: none;"> We report on a search for a resonance $X$ decaying to a pair of muons in $e^{+}e^{-}\rightarrow 渭^+ 渭^- X$ events in the 0.212-9.000 GeV/$c^{2}$ mass range, using 178 fb$^{-1}$ of data collected by the BelleII experiment at the SuperKEKB collider at a center of mass energy of 10.58 GeV. The analysis probes two different models of $X$ beyond the standard model: a $Z^{\prime}$ vector boson in the $L_渭-L_蟿$ model and a muonphilic scalar. We observe no evidence for a signal and set exclusion limits at the 90$\%$ confidence level on the products of cross section and branching fraction for these processes, ranging from 0.046 fb to 0.97 fb for the $L_渭-L_蟿$ model and from 0.055 fb to 1.3 fb for the muonphilic scalar model. For masses below 6 GeV/$c^{2}$, the corresponding constraints on the couplings of these processes to the standard model range from 0.0008 to 0.039 for the $L_渭-L_蟿$ model and from 0.0018 to 0.040 for the muonphilic scalar model. These are the first constraints on the muonphilic scalar from a dedicated search. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.02841v2-abstract-full').style.display = 'none'; document.getElementById('2403.02841v2-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> 2024-007, 2023-55 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 112015 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.02590">arXiv:2403.02590</a> <span> [<a href="https://arxiv.org/pdf/2403.02590">pdf</a>, <a href="https://arxiv.org/format/2403.02590">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of $CP$ asymmetries in $B^0 \rightarrow K^0_S K^0_S K^0_S$ decays at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (428 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="2403.02590v1-abstract-short" style="display: inline;"> We report a measurement of decay-time dependent charge-parity ($CP$) asymmetries in $B^0 \rightarrow K^0_S K^0_S K^0_S$ decays. We use $387 \times 10^6 B\bar{B}$ pairs collected at the $违(4S)$ resonance with the Belle II detector at the SuperKEKB asymmetric-energy electron-positron collider. We reconstruct 220 signal events and extract the $CP$-violating parameters $S$ and $C$ from a fit to the di… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.02590v1-abstract-full').style.display = 'inline'; document.getElementById('2403.02590v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.02590v1-abstract-full" style="display: none;"> We report a measurement of decay-time dependent charge-parity ($CP$) asymmetries in $B^0 \rightarrow K^0_S K^0_S K^0_S$ decays. We use $387 \times 10^6 B\bar{B}$ pairs collected at the $违(4S)$ resonance with the Belle II detector at the SuperKEKB asymmetric-energy electron-positron collider. We reconstruct 220 signal events and extract the $CP$-violating parameters $S$ and $C$ from a fit to the distribution of the decay-time difference between the two $B$ mesons. The resulting confidence region is consistent with previous measurements in $B^0 \rightarrow K^0_S K^0_S K^0_S$ and $B^0 \rightarrow (c\bar{c})K^0$ decays, and with predictions based on the standard model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.02590v1-abstract-full').style.display = 'none'; document.getElementById('2403.02590v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-008, KEK Preprint 2023-56 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.17260">arXiv:2402.17260</a> <span> [<a href="https://arxiv.org/pdf/2402.17260">pdf</a>, <a href="https://arxiv.org/format/2402.17260">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.110.012001">10.1103/PhysRevD.110.012001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> New graph-neural-network flavor tagger for Belle II and measurement of $\sin2蠁_1$ in $B^0 \to J/蠄K^0_\text{S}$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a> , et al. (391 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="2402.17260v2-abstract-short" style="display: inline;"> We present GFlaT, a new algorithm that uses a graph-neural-network to determine the flavor of neutral $B$ mesons produced in $违(4S)$ decays. It improves previous algorithms by using the information from all charged final-state particles and the relations between them. We evaluate its performance using $B$ decays to flavor-specific hadronic final states reconstructed in a 362 $\text{fb}^{-1}$ sampl… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.17260v2-abstract-full').style.display = 'inline'; document.getElementById('2402.17260v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.17260v2-abstract-full" style="display: none;"> We present GFlaT, a new algorithm that uses a graph-neural-network to determine the flavor of neutral $B$ mesons produced in $违(4S)$ decays. It improves previous algorithms by using the information from all charged final-state particles and the relations between them. We evaluate its performance using $B$ decays to flavor-specific hadronic final states reconstructed in a 362 $\text{fb}^{-1}$ sample of electron-positron collisions collected at the $违(4S)$ resonance with the Belle II detector at the SuperKEKB collider. We achieve an effective tagging efficiency of $(37.40 \pm 0.43 \pm 0.36) \%$, where the first uncertainty is statistical and the second systematic, which is $18\%$ better than the previous Belle II algorithm. Demonstrating the algorithm, we use $B^{0}\to J/蠄K^0_\text{S}$ decays to measure the mixing-induced and direct $CP$ violation parameters, $S = (0.724 \pm 0.035 \pm 0.009)$ and $C = (-0.035 \pm 0.026 \pm 0.029)$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.17260v2-abstract-full').style.display = 'none'; document.getElementById('2402.17260v2-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-006, KEK Preprint 2023-53 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 110, 012001, 2024 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.03713">arXiv:2402.03713</a> <span> [<a href="https://arxiv.org/pdf/2402.03713">pdf</a>, <a href="https://arxiv.org/format/2402.03713">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.110.112002">10.1103/PhysRevD.110.112002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $CP$ asymmetries in $B^0\to畏'K^0_s$ decays at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a> , et al. (377 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="2402.03713v2-abstract-short" style="display: inline;"> We describe a measurement of charge-parity ($CP$) violation asymmetries in $B^0\to畏'K^0_S$ decays using Belle II data. We consider $畏'\to畏(\to纬纬)蟺^+蟺^-$ and $畏'\to蟻(\to蟺^+蟺^-)纬$ decays. The data were collected at the SuperKEKB asymmetric-energy $e^+e^-$ collider between the years 2019 and 2022, and contain $(387\pm 6) \times 10^6$ bottom-antibottom meson pairs. We reconstruct $829\pm35$ signal dec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.03713v2-abstract-full').style.display = 'inline'; document.getElementById('2402.03713v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.03713v2-abstract-full" style="display: none;"> We describe a measurement of charge-parity ($CP$) violation asymmetries in $B^0\to畏'K^0_S$ decays using Belle II data. We consider $畏'\to畏(\to纬纬)蟺^+蟺^-$ and $畏'\to蟻(\to蟺^+蟺^-)纬$ decays. The data were collected at the SuperKEKB asymmetric-energy $e^+e^-$ collider between the years 2019 and 2022, and contain $(387\pm 6) \times 10^6$ bottom-antibottom meson pairs. We reconstruct $829\pm35$ signal decays and extract the $CP$ violating parameters from a fit to the distribution of the proper-decay-time difference between the two $B$ mesons. The measured direct and mixing-induced $CP$ asymmetries are $\text{C}_{畏'K^0_S} = -0.19 \pm 0.08 \pm 0.03 $ and $\text{S}_{畏'K^0_S} = +0.67 \pm 0.10 \pm 0.04 $, respectively, where the first uncertainties are statistical and the second are systematic. These results are in agreement with current world averages and standard model predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.03713v2-abstract-full').style.display = 'none'; document.getElementById('2402.03713v2-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2024-003, KEK Preprint 2023-50 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 110, 112002, Published 2 December, 2024 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.12021">arXiv:2401.12021</a> <span> [<a href="https://arxiv.org/pdf/2401.12021">pdf</a>, <a href="https://arxiv.org/format/2401.12021">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Study of $违(10753)$ decays to $蟺^{+}蟺^{-}违(nS)$ final states at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (371 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="2401.12021v3-abstract-short" style="display: inline;"> We present an analysis of the process $e^{+}e^{-}\to蟺^{+}蟺^{-}违(nS)$ (where $n$ = 1, 2, or 3) reconstructed in $19.6\rm$ $\rm fb^{-1}$ of Belle II data during a special run of the SuperKEKB collider at four energy points near the peak of the $违(10753)$ resonance. By analyzing the mass distribution of the $蟺^+蟺^-违(nS)$ system and the Born cross sections of the $e^{+}e^{-}\to蟺^{+}蟺^{-}违(nS)$ process… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.12021v3-abstract-full').style.display = 'inline'; document.getElementById('2401.12021v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.12021v3-abstract-full" style="display: none;"> We present an analysis of the process $e^{+}e^{-}\to蟺^{+}蟺^{-}违(nS)$ (where $n$ = 1, 2, or 3) reconstructed in $19.6\rm$ $\rm fb^{-1}$ of Belle II data during a special run of the SuperKEKB collider at four energy points near the peak of the $违(10753)$ resonance. By analyzing the mass distribution of the $蟺^+蟺^-违(nS)$ system and the Born cross sections of the $e^{+}e^{-}\to蟺^{+}蟺^{-}违(nS)$ process, we report the first observation of $违(10753)$ decays to the $蟺^{+}蟺^{-}违(1S)$ and $蟺^{+}蟺^{-}违(2S)$ final states, and find no evidence for decays to $蟺^{+}蟺^{-}违(3S)$. Possible intermediate states in the $蟺^+蟺^-违(1S,2S)$ transitions are also investigated, and no evidence for decays proceeding via the $蟺^\mp Z_b^\pm$ or $f_0(980)违(nS)$ intermediate states is found. We measure Born cross sections for the $e^{+}e^{-}\to蟺^{+}蟺^{-}违(nS)$ process that, combined with results from Belle, improve the precision of measurements of the $违(10753)$ mass and width by nearly a factor of two to $(10756.3\pm2.7\pm0.6)$ MeV/$c^2$ and $(29.7\pm8.5\pm1.1)$ MeV, respectively. The relative ratios of the Born cross sections at the $违(10753)$ resonance peak are also reported for the first time. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.12021v3-abstract-full').style.display = 'none'; document.getElementById('2401.12021v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.02840">arXiv:2401.02840</a> <span> [<a href="https://arxiv.org/pdf/2401.02840">pdf</a>, <a href="https://arxiv.org/format/2401.02840">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> A test of lepton flavor universality with a measurement of $R(D^{*})$ using hadronic $B$ tagging at the Belle II experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a> , et al. (412 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="2401.02840v1-abstract-short" style="display: inline;"> The ratio of branching fractions $R(D^{*}) = \mathcal{B}(\overline{B} \rightarrow D^{*} 蟿^{-} \overline谓_蟿)$/$\mathcal{B} (\overline{B} \rightarrow D^{*} \ell^{-} \overline谓_{\ell})$, where $\ell$ is an electron or muon, is measured using a Belle~II data sample with an integrated luminosity of $189~\mathrm{fb}^{-1}$ at the SuperKEKB asymmetric-energy $e^{+} e^{-}$ collider. Data is collected at th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.02840v1-abstract-full').style.display = 'inline'; document.getElementById('2401.02840v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.02840v1-abstract-full" style="display: none;"> The ratio of branching fractions $R(D^{*}) = \mathcal{B}(\overline{B} \rightarrow D^{*} 蟿^{-} \overline谓_蟿)$/$\mathcal{B} (\overline{B} \rightarrow D^{*} \ell^{-} \overline谓_{\ell})$, where $\ell$ is an electron or muon, is measured using a Belle~II data sample with an integrated luminosity of $189~\mathrm{fb}^{-1}$ at the SuperKEKB asymmetric-energy $e^{+} e^{-}$ collider. Data is collected at the $违(\mathrm{4S})$ resonance, and one $B$ meson in the $违(\mathrm{4S})\rightarrow B\overline{B}$ decay is fully reconstructed in hadronic decay modes. The accompanying signal $B$ meson is reconstructed as $\overline{B}\rightarrow D^{*} 蟿^{-}\overline谓_蟿$ using leptonic $蟿$ decays. The normalization decay, $\overline{B}\rightarrow D^{*} \ell^{-} \overline谓_{\ell}$, where $\ell$ is an electron or muon, produces the same observable final state particles. The ratio of branching fractions is extracted in a simultaneous fit to two signal-discriminating variables in both channels and yields $R(D^{*}) = 0.262~_{-0.039}^{+0.041}(\mathrm{stat})~_{-0.032}^{+0.035}(\mathrm{syst})$. This result is consistent with the current world average and with standard model predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.02840v1-abstract-full').style.display = 'none'; document.getElementById('2401.02840v1-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 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 17 figures, submitted to PRD</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-PUB-PH-2024-001 https://docs.belle2.org/record/4057/ ; Belle II Preprint 2024-001; KEK Preprint 2023-47 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.13043">arXiv:2312.13043</a> <span> [<a href="https://arxiv.org/pdf/2312.13043">pdf</a>, <a href="https://arxiv.org/format/2312.13043">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for the $e^+e^-\to畏_{b}(1S)蠅$ and $e^+e^-\to蠂_{b0}(1P)蠅$ processes at $\sqrt{s}=10.745\,\mathrm{GeV}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (397 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="2312.13043v1-abstract-short" style="display: inline;"> We search for the $e^+e^-\to畏_b(1S)蠅$ and $e^+e^-\to蠂_{b0}(1P)蠅$ processes at a center-of-mass energy of 10.745 GeV, which is close to the peak of the $违(10753)$ state. We use data collected by the Belle II experiment during a special run, corresponding to an integrated luminosity of $9.8\,\mathrm{fb}^{-1}$. We reconstruct $蠅\to蟺^+蟺^-蟺^0$ decays and use the $蠅$ meson's recoil mass to search for th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.13043v1-abstract-full').style.display = 'inline'; document.getElementById('2312.13043v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.13043v1-abstract-full" style="display: none;"> We search for the $e^+e^-\to畏_b(1S)蠅$ and $e^+e^-\to蠂_{b0}(1P)蠅$ processes at a center-of-mass energy of 10.745 GeV, which is close to the peak of the $违(10753)$ state. We use data collected by the Belle II experiment during a special run, corresponding to an integrated luminosity of $9.8\,\mathrm{fb}^{-1}$. We reconstruct $蠅\to蟺^+蟺^-蟺^0$ decays and use the $蠅$ meson's recoil mass to search for the signals. We do not find evidence for either process, and set upper limits on the corresponding Born-level cross sections of 2.5 pb and 7.8 pb, respectively, at the 90% confidence level. The $蠂_{b0}(1P)蠅$ limit is the result of a combination of this analysis and a previous search using full reconstruction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.13043v1-abstract-full').style.display = 'none'; document.getElementById('2312.13043v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 3 figures, submitted to PRD</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-018, KEK Preprint 2023-36 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.06501">arXiv:2312.06501</a> <span> [<a href="https://arxiv.org/pdf/2312.06501">pdf</a>, <a href="https://arxiv.org/format/2312.06501">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/19/02/C02038">10.1088/1748-0221/19/02/C02038 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Silicon Vertex Detector of the Belle II Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Mondal%2C+S">S. Mondal</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Aziz%2C+T">T. Aziz</a>, <a href="/search/hep-ex?searchtype=author&query=Bacher%2C+S">S. Bacher</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Batignani%2C+G">G. Batignani</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P+K">P. K. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Bettarini%2C+S">S. Bettarini</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Buchsteiner%2C+F">F. Buchsteiner</a>, <a href="/search/hep-ex?searchtype=author&query=Casarosa%2C+G">G. Casarosa</a>, <a href="/search/hep-ex?searchtype=author&query=Corona%2C+L">L. Corona</a>, <a href="/search/hep-ex?searchtype=author&query=Das%2C+S+B">S. B. Das</a>, <a href="/search/hep-ex?searchtype=author&query=Dujany%2C+G">G. Dujany</a>, <a href="/search/hep-ex?searchtype=author&query=Finck%2C+C">C. Finck</a>, <a href="/search/hep-ex?searchtype=author&query=Forti%2C+F">F. Forti</a>, <a href="/search/hep-ex?searchtype=author&query=Friedl%2C+M">M. Friedl</a>, <a href="/search/hep-ex?searchtype=author&query=Gabrielli%2C+A">A. Gabrielli</a>, <a href="/search/hep-ex?searchtype=author&query=Gobbo%2C+B">B. Gobbo</a>, <a href="/search/hep-ex?searchtype=author&query=Halder%2C+S">S. Halder</a>, <a href="/search/hep-ex?searchtype=author&query=Hara%2C+K">K. Hara</a> , et al. (50 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="2312.06501v3-abstract-short" style="display: inline;"> The silicon vertex detector (SVD) is installed at the heart of the Belle II experiment, taking data at the high-luminosity $B$-Factory SuperKEKB since 2019. The detector has shown a stable and above-99\% hit efficiency, with a large signal-to-noise in all sensors since the beginning of data taking. Cluster position and time resolution have been measured with 2020 and 2022 data and show excellent p… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.06501v3-abstract-full').style.display = 'inline'; document.getElementById('2312.06501v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.06501v3-abstract-full" style="display: none;"> The silicon vertex detector (SVD) is installed at the heart of the Belle II experiment, taking data at the high-luminosity $B$-Factory SuperKEKB since 2019. The detector has shown a stable and above-99\% hit efficiency, with a large signal-to-noise in all sensors since the beginning of data taking. Cluster position and time resolution have been measured with 2020 and 2022 data and show excellent performance and stability. The effect of radiation damage is visible, but not affecting the performance. As the luminosity increases, higher machine backgrounds are expected and the excellent hit-time information in SVD can be exploited for background rejection. In particular, we have recently developed a novel procedure to select hits by grouping them event-by-event based on their time. This new procedure allows a significant reduction of the fake rate, while preserving the tracking efficiency, and it has therefore replaced the previous cut-based procedure. We have developed a method that uses the SVD hits to estimate the track time (previously unavailable) and the collision time. It has a similar precision to the estimate based on the drift chamber but its execution time is three orders of magnitude smaller, allowing a faster online reconstruction that is crucial in a high luminosity regime. The track time is a powerful information provided to analysis that allows, together with the above-mention grouping selection, to raise the occupancy limit above that expected at nominal luminosity, leaving room for a safety factor. Finally, in June 2022 the data taking of the Belle II experiment was stopped to install a new two-layer DEPFET detector (PXD) and upgrade components of the accelerator. The whole silicon tracker (PXD+SVD) has been extracted from Belle II, the new PXD installed, the detector closed and commissioned. We briefly describe the SVD results of this upgrade. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.06501v3-abstract-full').style.display = 'none'; document.getElementById('2312.06501v3-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 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </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$^{\text{th}}$ Topical Seminar on Innovative Particle and Radiation Detectors (IPRD23) 25--29 September 2023 Siena, Italy</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 19 C02038 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.14647">arXiv:2311.14647</a> <span> [<a href="https://arxiv.org/pdf/2311.14647">pdf</a>, <a href="https://arxiv.org/format/2311.14647">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.112006">10.1103/PhysRevD.109.112006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evidence for $B^{+}\to K^{+}谓\bar谓$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (430 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="2311.14647v3-abstract-short" style="display: inline;"> We search for the rare decay $B^{+}\rightarrow K^{+}谓\bar谓$ in a $362\ \rm{fb}^{-1}$ sample of electron-positron collisions at the $违(4S)$ resonance collected with the Belle II detector at the SuperKEKB collider. We use the inclusive properties of the accompanying $B$ meson in $违(4S) \to B\kern 0.18em\overline{\kern -0.18em B}{}$ events to suppress background from other decays of the signal $B$ ca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.14647v3-abstract-full').style.display = 'inline'; document.getElementById('2311.14647v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.14647v3-abstract-full" style="display: none;"> We search for the rare decay $B^{+}\rightarrow K^{+}谓\bar谓$ in a $362\ \rm{fb}^{-1}$ sample of electron-positron collisions at the $违(4S)$ resonance collected with the Belle II detector at the SuperKEKB collider. We use the inclusive properties of the accompanying $B$ meson in $违(4S) \to B\kern 0.18em\overline{\kern -0.18em B}{}$ events to suppress background from other decays of the signal $B$ candidate and light-quark pair production. We validate the measurement with an auxiliary analysis based on a conventional hadronic reconstruction of the accompanying $B$ meson. For background suppression, we exploit distinct signal features using machine learning methods tuned with simulated data. The signal-reconstruction efficiency and background suppression are validated through various control channels. The branching fraction is extracted in a maximum likelihood fit. Our inclusive and hadronic analyses yield consistent results for the $B^{+}\rightarrow K^{+}谓\bar谓$ branching fraction of $\left[2.7\pm 0.5(\mathrm{stat})\pm 0.5(\mathrm{syst})\right] \times 10^{-5}$ and $\left[1.1^{+0.9}_{-0.8}(\mathrm{stat}){}^{+0.8}_{-0.5}(\mathrm{syst})\right] \times 10^{-5}$, respectively. Combining the results, we determine the branching fraction of the decay $B^{+}\rightarrow K^{+}谓\bar谓$ to be $\left[2.3 \pm 0.5(\mathrm{stat})^{+0.5}_{-0.4}(\mathrm{syst})\right]\times 10^{-5}$, providing the first evidence for this decay at $3.5$ standard deviations. The combined result is $2.7$ standard deviations above the standard model expectation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.14647v3-abstract-full').style.display = 'none'; document.getElementById('2311.14647v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </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">29 pages, 23 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-017, KEK Preprint 2023-35 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 112006 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.13360">arXiv:2311.13360</a> <span> [<a href="https://arxiv.org/pdf/2311.13360">pdf</a>, <a href="https://arxiv.org/format/2311.13360">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Upgrade of Belle II Vertex Detector with CMOS Pixel Technology </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Schwickardi%2C+M">M. Schwickardi</a>, <a href="/search/hep-ex?searchtype=author&query=Babeluk%2C+M">M. Babeluk</a>, <a href="/search/hep-ex?searchtype=author&query=Barbero%2C+M">M. Barbero</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bergauer%2C+T">T. Bergauer</a>, <a href="/search/hep-ex?searchtype=author&query=Bertolone%2C+G">G. Bertolone</a>, <a href="/search/hep-ex?searchtype=author&query=Bettarini%2C+S">S. Bettarini</a>, <a href="/search/hep-ex?searchtype=author&query=Bosi%2C+F">F. Bosi</a>, <a href="/search/hep-ex?searchtype=author&query=Breugnon%2C+P">P. Breugnon</a>, <a href="/search/hep-ex?searchtype=author&query=Buch%2C+Y">Y. Buch</a>, <a href="/search/hep-ex?searchtype=author&query=Casarosa%2C+G">G. Casarosa</a>, <a href="/search/hep-ex?searchtype=author&query=Dujany%2C+G">G. Dujany</a>, <a href="/search/hep-ex?searchtype=author&query=Finck%2C+C">C. Finck</a>, <a href="/search/hep-ex?searchtype=author&query=Forti%2C+F">F. Forti</a>, <a href="/search/hep-ex?searchtype=author&query=Frey%2C+A">A. Frey</a>, <a href="/search/hep-ex?searchtype=author&query=Himmi%2C+A">A. Himmi</a>, <a href="/search/hep-ex?searchtype=author&query=Irmler%2C+C">C. Irmler</a>, <a href="/search/hep-ex?searchtype=author&query=Kumar%2C+A">A. Kumar</a>, <a href="/search/hep-ex?searchtype=author&query=Marinas%2C+C">C. Marinas</a>, <a href="/search/hep-ex?searchtype=author&query=Massa%2C+M">M. Massa</a>, <a href="/search/hep-ex?searchtype=author&query=Massaccesi%2C+L">L. Massaccesi</a>, <a href="/search/hep-ex?searchtype=author&query=de+Cos%2C+J+M">J. Mazzora de Cos</a>, <a href="/search/hep-ex?searchtype=author&query=Minuti%2C+M">M. Minuti</a>, <a href="/search/hep-ex?searchtype=author&query=Mondal%2C+S">S. Mondal</a>, <a href="/search/hep-ex?searchtype=author&query=Pangaud%2C+P">P. Pangaud</a> , et al. (5 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="2311.13360v2-abstract-short" style="display: inline;"> The Belle II experiment at KEK in Japan considers upgrading its vertex detector system to address the challenges posed by high background levels caused by the increased luminosity of the SuperKEKB collider. One proposal for upgrading the vertex detector aims to install a 5-layer all monolithic pixel vertex detector based on fully depleted CMOS sensors in 2027. The new system will use the OBELIX MA… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.13360v2-abstract-full').style.display = 'inline'; document.getElementById('2311.13360v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.13360v2-abstract-full" style="display: none;"> The Belle II experiment at KEK in Japan considers upgrading its vertex detector system to address the challenges posed by high background levels caused by the increased luminosity of the SuperKEKB collider. One proposal for upgrading the vertex detector aims to install a 5-layer all monolithic pixel vertex detector based on fully depleted CMOS sensors in 2027. The new system will use the OBELIX MAPS chips to improve background robustness and reduce occupancy levels through small and fast pixels. This causes better track finding, especially for low transverse momenta tracks. This text will focus on the predecessor of the OBELIX sensor, the TJ-Monopix2, presenting laboratory and test beam results on pixel response, efficiency, and spatial resolution. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.13360v2-abstract-full').style.display = 'none'; document.getElementById('2311.13360v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 8 figures, Proceedings for 24th international Workshop on Radiation Imaging Detectors,25-29 JUNE 20233 Oslo</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.07248">arXiv:2311.07248</a> <span> [<a href="https://arxiv.org/pdf/2311.07248">pdf</a>, <a href="https://arxiv.org/format/2311.07248">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.132.211804">10.1103/PhysRevLett.132.211804 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First Measurement of $R(X_{蟿/\ell})$ as an Inclusive Test of the $b \to c 蟿谓$ Anomaly </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a> , et al. (368 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="2311.07248v2-abstract-short" style="display: inline;"> We measure the tau-to-light-lepton ratio of inclusive $B$-meson branching fractions $R(X_{蟿/\ell}) \equiv \mathcal{B}(B\to X 蟿谓)/\mathcal{B}(B \to X \ell 谓)$, where $\ell$ indicates an electron or muon, and thereby test the universality of charged-current weak interactions. We select events that have one fully reconstructed $B$ meson and a charged lepton candidate from $189~\mathrm{fb}^{-1}$ of el… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.07248v2-abstract-full').style.display = 'inline'; document.getElementById('2311.07248v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.07248v2-abstract-full" style="display: none;"> We measure the tau-to-light-lepton ratio of inclusive $B$-meson branching fractions $R(X_{蟿/\ell}) \equiv \mathcal{B}(B\to X 蟿谓)/\mathcal{B}(B \to X \ell 谓)$, where $\ell$ indicates an electron or muon, and thereby test the universality of charged-current weak interactions. We select events that have one fully reconstructed $B$ meson and a charged lepton candidate from $189~\mathrm{fb}^{-1}$ of electron-positron collision data collected with the Belle II detector. We find $R(X_{蟿/\ell}) = 0.228 \pm 0.016~(\mathrm{stat}) \pm 0.036~(\mathrm{syst})$, in agreement with standard-model expectations. This is the first direct measurement of $R(X_{蟿/\ell})$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.07248v2-abstract-full').style.display = 'none'; document.getElementById('2311.07248v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-016, KEK Preprint 2023-34 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 132, 211804 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.06381">arXiv:2310.06381</a> <span> [<a href="https://arxiv.org/pdf/2310.06381">pdf</a>, <a href="https://arxiv.org/format/2310.06381">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.012001">10.1103/PhysRevD.109.012001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of branching fractions and direct $CP$ asymmetries for $B \to K蟺$ and $B\to蟺蟺$ decays at Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a> , et al. (413 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="2310.06381v2-abstract-short" style="display: inline;"> We report measurements of the branching fractions and direct $\it{CP}$ asymmetries of the decays $B^0 \to K^+ 蟺^-$, $B^+ \to K^+ 蟺^0$, $B^+ \to K^0 蟺^+$, and $B^0 \to K^0 蟺^0$, and use these for testing the standard model through an isospin-based sum rule. In addition, we measure the branching fraction and direct $\it{CP}$ asymmetry of the decay $B^+ \to 蟺^+蟺^0$ and the branching fraction of the d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.06381v2-abstract-full').style.display = 'inline'; document.getElementById('2310.06381v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.06381v2-abstract-full" style="display: none;"> We report measurements of the branching fractions and direct $\it{CP}$ asymmetries of the decays $B^0 \to K^+ 蟺^-$, $B^+ \to K^+ 蟺^0$, $B^+ \to K^0 蟺^+$, and $B^0 \to K^0 蟺^0$, and use these for testing the standard model through an isospin-based sum rule. In addition, we measure the branching fraction and direct $\it{CP}$ asymmetry of the decay $B^+ \to 蟺^+蟺^0$ and the branching fraction of the decay $B^0 \to 蟺^+蟺^-$. The data are collected with the Belle II detector from $e^+e^-$ collisions at the $违(4S)$ resonance produced by the SuperKEKB asymmetric-energy collider and contain $387\times 10^6$ bottom-antibottom meson pairs. Signal yields are determined in two-dimensional fits to background-discriminating variables, and range from 500 to 3900 decays, depending on the channel. We obtain $-0.03 \pm 0.13 \pm 0.04$ for the sum rule, in agreement with the standard model expectation of zero and with a precision comparable to the best existing determinations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.06381v2-abstract-full').style.display = 'none'; document.getElementById('2310.06381v2-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 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-003, KEK Preprint 2022-58 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 012001 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.01170">arXiv:2310.01170</a> <span> [<a href="https://arxiv.org/pdf/2310.01170">pdf</a>, <a href="https://arxiv.org/format/2310.01170">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.108.092013">10.1103/PhysRevD.108.092013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determination of $|V_{cb}|$ using $\overline{B}^0\to D^{*+}\ell^-\bar谓_\ell$ decays with Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (394 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="2310.01170v2-abstract-short" style="display: inline;"> We determine the CKM matrix-element magnitude $|V_{cb}|$ using $\overline{B}^0\to D^{*+}\ell^-\bar谓_\ell$ decays reconstructed in $189 \, \mathrm{fb}^{-1}$ of collision data collected by the Belle II experiment, located at the SuperKEKB $e^+e^-$ collider. Partial decay rates are reported as functions of the recoil parameter $w$ and three decay angles separately for electron and muon final states.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.01170v2-abstract-full').style.display = 'inline'; document.getElementById('2310.01170v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.01170v2-abstract-full" style="display: none;"> We determine the CKM matrix-element magnitude $|V_{cb}|$ using $\overline{B}^0\to D^{*+}\ell^-\bar谓_\ell$ decays reconstructed in $189 \, \mathrm{fb}^{-1}$ of collision data collected by the Belle II experiment, located at the SuperKEKB $e^+e^-$ collider. Partial decay rates are reported as functions of the recoil parameter $w$ and three decay angles separately for electron and muon final states. We obtain $|V_{cb}|$ using the Boyd-Grinstein-Lebed and Caprini-Lellouch-Neubert parametrizations, and find $|V_{cb}|_\mathrm{BGL}=(40.57\pm 0.31 \pm 0.95\pm 0.58)\times 10^{-3}$ and $|V_{cb}|_\mathrm{CLN}=(40.13 \pm 0.27 \pm 0.93\pm 0.58 )\times 10^{-3}$ with the uncertainties denoting statistical components, systematic components, and components from the lattice QCD input, respectively. The branching fraction is measured to be ${\cal B}(\overline{B}^0\to D^{*+}\ell^-\bar谓_\ell)=(4.922 \pm 0.023 \pm 0.220)\%$. The ratio of branching fractions for electron and muon final states is found to be $0.998 \pm 0.009 \pm 0.020$. In addition, we determine the forward-backward angular asymmetry and the $D^{*+}$ longitudinal polarization fractions. All results are compatible with lepton-flavor universality in the Standard Model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.01170v2-abstract-full').style.display = 'none'; document.getElementById('2310.01170v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-014, KEK Preprint 2023-28 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D 108 (2023) 9, 092013 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.05048">arXiv:2308.05048</a> <span> [<a href="https://arxiv.org/pdf/2308.05048">pdf</a>, <a href="https://arxiv.org/format/2308.05048">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of branching-fraction ratios and $CP$ asymmetries in $B^{\pm} \to D_{CP\pm}K^{\pm}$ decays at Belle and Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle%2C+T">The Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+B+I">Belle II Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (405 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="2308.05048v2-abstract-short" style="display: inline;"> We report results from a study of $B^\pm \rightarrow DK^\pm$ decays followed by $D$ decaying to $CP$~eigenstates, where $D$ indicates a $D^0$ or $\bar{D}^{0}$ meson. These decays are sensitive to the Cabibbo-Kobayashi-Maskawa unitarity-triangle angle $蠁_{3}$. The results are based on a combined analysis of the final data set of $772 \times 10^6~B\bar{B}$ pairs collected by the Belle experiment and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.05048v2-abstract-full').style.display = 'inline'; document.getElementById('2308.05048v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.05048v2-abstract-full" style="display: none;"> We report results from a study of $B^\pm \rightarrow DK^\pm$ decays followed by $D$ decaying to $CP$~eigenstates, where $D$ indicates a $D^0$ or $\bar{D}^{0}$ meson. These decays are sensitive to the Cabibbo-Kobayashi-Maskawa unitarity-triangle angle $蠁_{3}$. The results are based on a combined analysis of the final data set of $772 \times 10^6~B\bar{B}$ pairs collected by the Belle experiment and a data set of $198 \times 10^6~B\bar{B}$ pairs collected by the Belle~II experiment, both in electron-positron collisions at the $违(4S)$ resonance. We measure the $CP$ asymmetries to be $\mathcal{ A}_{CP +} =~(+12.5 \pm 5.8 \pm 1.4)\% $ and $\mathcal{ A}_{CP -} =~(-16.7 \pm 5.7 \pm 0.6)\%$, and the ratios of branching fractions to be $\mathcal{ R}_{CP+}=~1.164 \pm 0.081 \pm 0.036 $ and $\mathcal{ R}_{CP-} =~1.151 \pm 0.074 \pm 0.019$. The first contribution to the uncertainties is statistical, and the second is systematic. The asymmetries $\mathcal{A}_{CP +}$ and $\mathcal{A}_{CP -}$ have similar magnitudes and opposite signs; their difference corresponds to 3.5~standard deviations. From these values we calculate 68.3\% confidence intervals of ($8.5^{\circ}<蠁_{3}<16.5^{\circ}$) or ($84.5^{\circ}<蠁_{3}<95.5^{\circ}$) or ($163.3^{\circ}<蠁_{3}<171.5^{\circ}$) and $0.321<r_{B}<0.465$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.05048v2-abstract-full').style.display = 'none'; document.getElementById('2308.05048v2-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 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-011;KEK Preprint 2023-9 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.02023">arXiv:2308.02023</a> <span> [<a href="https://arxiv.org/pdf/2308.02023">pdf</a>, <a href="https://arxiv.org/format/2308.02023">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.131.181801">10.1103/PhysRevLett.131.181801 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Tests of light-lepton universality in angular asymmetries of $B^0 \to D^{*-} \ell 谓$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (394 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="2308.02023v3-abstract-short" style="display: inline;"> We present the first comprehensive tests of light-lepton universality in the angular distributions of semileptonic $B^0$-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry observables as functions of the decay recoil that are sensitive to lepton-universality-violating contributions. We use events where one neutral $B$ is fully reconstructed in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.02023v3-abstract-full').style.display = 'inline'; document.getElementById('2308.02023v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.02023v3-abstract-full" style="display: none;"> We present the first comprehensive tests of light-lepton universality in the angular distributions of semileptonic $B^0$-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry observables as functions of the decay recoil that are sensitive to lepton-universality-violating contributions. We use events where one neutral $B$ is fully reconstructed in $违\left(4S\right)\to{}B \overline{B}$ decays in data corresponding to $189~\mathrm{fb}^{-1}$ integrated luminosity from electron-positron collisions collected with the Belle II detector. We find no significant deviation from the standard model expectations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.02023v3-abstract-full').style.display = 'none'; document.getElementById('2308.02023v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-013, KEK Preprint 2023-18 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 131, 181801 (Published 31 October 2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2307.02802">arXiv:2307.02802</a> <span> [<a href="https://arxiv.org/pdf/2307.02802">pdf</a>, <a href="https://arxiv.org/format/2307.02802">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.108.072012">10.1103/PhysRevD.108.072012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $CP$ asymmetries in $B^0\to 蠁K^0_S$ decays with Belle II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becherer%2C+F">F. Becherer</a> , et al. (410 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="2307.02802v2-abstract-short" style="display: inline;"> We present a measurement of time-dependent rate asymmetries in $B^0\to 蠁K^0_S$ decays to search for non-standard-model physics in $b\to q \overline{q}s$ transitions. The data sample is collected with the Belle II detector at the SuperKEKB asymmetric-energy $e^{+}e^{-}$ collider in 2019-2022 and contains $(387\pm 6)\times 10^6$ bottom-antibottom mesons from $违(4S)$ resonance decays. We reconstruct… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.02802v2-abstract-full').style.display = 'inline'; document.getElementById('2307.02802v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2307.02802v2-abstract-full" style="display: none;"> We present a measurement of time-dependent rate asymmetries in $B^0\to 蠁K^0_S$ decays to search for non-standard-model physics in $b\to q \overline{q}s$ transitions. The data sample is collected with the Belle II detector at the SuperKEKB asymmetric-energy $e^{+}e^{-}$ collider in 2019-2022 and contains $(387\pm 6)\times 10^6$ bottom-antibottom mesons from $违(4S)$ resonance decays. We reconstruct $162\pm17$ signal events and extract the charge-parity ($CP$) violating parameters from a fit to the distribution of the proper-decay-time difference of the two $B$ mesons. The measured direct and mixing-induced $CP$ asymmetries are $A=0.31\pm0.20\pm0.05$ and $S=0.54\pm0.26^{+0.06}_{-0.08}$, respectively, where the first uncertainties are statistical and the second are systematic. The results are compatible with the $CP$ asymmetries observed in $b\to c\overline{c} s$ transitions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.02802v2-abstract-full').style.display = 'none'; document.getElementById('2307.02802v2-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II preprint: 2023-012, KEK preprint: 2023-10 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 108, 072012 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.12294">arXiv:2306.12294</a> <span> [<a href="https://arxiv.org/pdf/2306.12294">pdf</a>, <a href="https://arxiv.org/format/2306.12294">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.131.121802">10.1103/PhysRevLett.131.121802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for a $蟿^+蟿^-$ resonance in $e^{+}e^{-}\rightarrow 渭^{+}渭^{-} 蟿^+蟿^-$ events with the Belle II experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+II+Collaboration"> Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adamczyk%2C+K">K. Adamczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+H">H. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Atmacan%2C+H">H. Atmacan</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a> , et al. (442 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="2306.12294v2-abstract-short" style="display: inline;"> We report the first search for a non-standard-model resonance decaying into $蟿$ pairs in $e^{+}e^{-}\rightarrow 渭^{+}渭^{-} 蟿^+蟿^-$ events in the 3.6-10 GeV/$c^{2}$ mass range. We use a 62.8 fb$^{-1}$ sample of $e^+e^-$ collisions collected at a center-of-mass energy of 10.58 GeV by the Belle II experiment at the SuperKEKB collider. The analysis probes three different models predicting a spin-1 par… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.12294v2-abstract-full').style.display = 'inline'; document.getElementById('2306.12294v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.12294v2-abstract-full" style="display: none;"> We report the first search for a non-standard-model resonance decaying into $蟿$ pairs in $e^{+}e^{-}\rightarrow 渭^{+}渭^{-} 蟿^+蟿^-$ events in the 3.6-10 GeV/$c^{2}$ mass range. We use a 62.8 fb$^{-1}$ sample of $e^+e^-$ collisions collected at a center-of-mass energy of 10.58 GeV by the Belle II experiment at the SuperKEKB collider. The analysis probes three different models predicting a spin-1 particle coupling only to the heavier lepton families, a Higgs-like spin-0 particle that couples preferentially to charged leptons (leptophilic scalar), and an axion-like particle, respectively. We observe no evidence for a signal and set exclusion limits at 90% confidence level on the product of cross section and branching fraction into $蟿$ pairs, ranging from 0.7 fb to 24 fb, and on the couplings of these processes. We obtain world-leading constraints on the couplings for the leptophilic scalar model for masses above 6.5 GeV/$c^2$ and for the axion-like particle model over the entire mass range. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.12294v2-abstract-full').style.display = 'none'; document.getElementById('2306.12294v2-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 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> KEK preprint: 2022-32, Belle II preprint: 2022-006 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 131, 121802 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.02940">arXiv:2306.02940</a> <span> [<a href="https://arxiv.org/pdf/2306.02940">pdf</a>, <a href="https://arxiv.org/format/2306.02940">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP09(2023)146">10.1007/JHEP09(2023)146 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $C\!P$ asymmetries and branching-fraction ratios for $B^\pm \to DK^\pm$ and $D蟺^\pm$ with $D\to K^0_{\rm S} K^\pm蟺^\mp$ using Belle and Belle II data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle"> Belle</a>, <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+B+I">Belle II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">L. Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/hep-ex?searchtype=author&query=Aloisio%2C+A">A. Aloisio</a>, <a href="/search/hep-ex?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/hep-ex?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+V">V. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Aversano%2C+M">M. Aversano</a>, <a href="/search/hep-ex?searchtype=author&query=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Barrett%2C+M">M. Barrett</a>, <a href="/search/hep-ex?searchtype=author&query=Baudot%2C+J">J. Baudot</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Baur%2C+A">A. Baur</a>, <a href="/search/hep-ex?searchtype=author&query=Beaubien%2C+A">A. Beaubien</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+J">J. Becker</a> , et al. (386 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="2306.02940v2-abstract-short" style="display: inline;"> We measure $C\!P$ asymmetries and branching-fraction ratios for $B^\pm \to DK^\pm$ and $D蟺^\pm$ decays with $D\to K^0_{\rm S} K^\pm蟺^\mp$, where $D$ is a superposition of $D^0$ and $\bar{D}^0$. We use the full data set of the Belle experiment, containing $772\times 10^6~B\bar{B}$ pairs, and data from the Belle~II experiment, containing $387\times 10^6~B\bar{B}$ pairs, both collected in electron-po… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.02940v2-abstract-full').style.display = 'inline'; document.getElementById('2306.02940v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.02940v2-abstract-full" style="display: none;"> We measure $C\!P$ asymmetries and branching-fraction ratios for $B^\pm \to DK^\pm$ and $D蟺^\pm$ decays with $D\to K^0_{\rm S} K^\pm蟺^\mp$, where $D$ is a superposition of $D^0$ and $\bar{D}^0$. We use the full data set of the Belle experiment, containing $772\times 10^6~B\bar{B}$ pairs, and data from the Belle~II experiment, containing $387\times 10^6~B\bar{B}$ pairs, both collected in electron-positron collisions at the $违(4S)$ resonance. Our results provide model-independent information on the unitarity triangle angle $蠁_3$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.02940v2-abstract-full').style.display = 'none'; document.getElementById('2306.02940v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </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, 8 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-010; KEK Preprint 2023-8 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of High Energy Physics 09(2023)146 </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Baudot%2C+J&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Baudot%2C+J&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Baudot%2C+J&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> <li> <a href="/search/?searchtype=author&query=Baudot%2C+J&start=100" class="pagination-link " aria-label="Page 3" aria-current="page">3 </a> </li> </ul> </nav> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a 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