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</a> </li> <li> <a href="/search/?searchtype=author&query=Bhardwaj%2C+V&start=200" class="pagination-link " aria-label="Page 5" aria-current="page">5 </a> </li> <li> <a href="/search/?searchtype=author&query=Bhardwaj%2C+V&start=250" class="pagination-link " aria-label="Page 6" aria-current="page">6 </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/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/2410.08622">arXiv:2410.08622</a> <span> [<a href="https://arxiv.org/pdf/2410.08622">pdf</a>, <a href="https://arxiv.org/ps/2410.08622">ps</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> <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="2410.08622v1-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('2410.08622v1-abstract-full').style.display = 'inline'; document.getElementById('2410.08622v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.08622v1-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 $B(B^0 \to J/蠄蟺^0)=(2.02 \pm 0.12 \pm 0.10)\times 10^{-5}$ 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('2410.08622v1-abstract-full').style.display = 'none'; document.getElementById('2410.08622v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <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> </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="2409.15777v1-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('2409.15777v1-abstract-full').style.display = 'inline'; document.getElementById('2409.15777v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.15777v1-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('2409.15777v1-abstract-full').style.display = 'none'; document.getElementById('2409.15777v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">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/2405.11390">arXiv:2405.11390</a> <span> [<a href="https://arxiv.org/pdf/2405.11390">pdf</a>, <a href="https://arxiv.org/format/2405.11390">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 Two-Body $B$ Meson Decays to $螞^{0}$ and $惟^{(*)0}_{c}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Savinov%2C+V">V. Savinov</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</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=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=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=%C4%8Cervenkov%2C+D">D. 膶ervenkov</a>, <a href="/search/hep-ex?searchtype=author&query=Chang%2C+M+-">M. -C. Chang</a>, <a href="/search/hep-ex?searchtype=author&query=Chang%2C+P">P. Chang</a>, <a href="/search/hep-ex?searchtype=author&query=Cheon%2C+B+G">B. G. Cheon</a>, <a href="/search/hep-ex?searchtype=author&query=Cho%2C+K">K. Cho</a> , et al. (124 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="2405.11390v1-abstract-short" style="display: inline;"> We report the results of the first search for Standard Model and baryon-number-violating two-body decays of the neutral $B$ mesons to $螞^{0}$ and $惟^{(*)0}_c$ using 711~${\rm fb^{-1}}$ of data collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We observe no evidence of signal from any such decays and set 95\% confidence-level upper limits o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.11390v1-abstract-full').style.display = 'inline'; document.getElementById('2405.11390v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.11390v1-abstract-full" style="display: none;"> We report the results of the first search for Standard Model and baryon-number-violating two-body decays of the neutral $B$ mesons to $螞^{0}$ and $惟^{(*)0}_c$ using 711~${\rm fb^{-1}}$ of data collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We observe no evidence of signal from any such decays and set 95\% confidence-level upper limits on the products of $B^0$ and $\bar{B}^0$ branching fractions for these two-body decays with $\mathcal{B}(惟_{c}^{0} \to 蟺^+ 惟^-)$ in the range between 9.5~$\times 10^{-8}$ and 31.2~$\times 10^{-8}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.11390v1-abstract-full').style.display = 'none'; document.getElementById('2405.11390v1-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 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">6 pages, 2 figures, submitted to PRD(L)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2024-04, KEK Preprint 2024-5 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.00201">arXiv:2404.00201</a> <span> [<a href="https://arxiv.org/pdf/2404.00201">pdf</a>, <a href="https://arxiv.org/format/2404.00201">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"> Angular analysis of $B \to K^* e^+ e^-$ in the low-$q^2$ region with new electron identification at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ferlewicz%2C+D">D. Ferlewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Urquijo%2C+P">P. Urquijo</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=Aihara%2C+H">H. Aihara</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=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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=Campajola%2C+M">M. Campajola</a> , et al. (145 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="2404.00201v3-abstract-short" style="display: inline;"> We perform an angular analysis of the $B\to K^* e^+ e^-$ decay for the dielectron mass squared, $q^2$, range of $0.0008$ to $1.1200 ~\text{GeV}^2 /c^4$ using the full Belle data set in the $K^{*0} \to K^+ 蟺^-$ and $K^{*+} \to K_S^0 蟺^+$ channels, incorporating new methods of electron identification to improve the statistical power of the data set. This analysis is sensitive to contributions from r… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.00201v3-abstract-full').style.display = 'inline'; document.getElementById('2404.00201v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.00201v3-abstract-full" style="display: none;"> We perform an angular analysis of the $B\to K^* e^+ e^-$ decay for the dielectron mass squared, $q^2$, range of $0.0008$ to $1.1200 ~\text{GeV}^2 /c^4$ using the full Belle data set in the $K^{*0} \to K^+ 蟺^-$ and $K^{*+} \to K_S^0 蟺^+$ channels, incorporating new methods of electron identification to improve the statistical power of the data set. This analysis is sensitive to contributions from right-handed currents from physics beyond the Standard Model by constraining the Wilson coefficients $\mathcal{C}_7^{(\prime)}$. We perform a fit to the $B\to K^* e^+ e^-$ differential decay rate and measure the imaginary component of the transversality amplitude to be $A_T^{\rm Im} = -1.27 \pm 0.52 \pm 0.12$, and the $K^*$ transverse asymmetry to be $A_T^{(2)} = 0.52 \pm 0.53 \pm 0.11$, with $F_L$ and $A_T^{\rm Re}$ fixed to the Standard Model values. The resulting constraints on the value of $\mathcal{C}_7^{\prime}$ are consistent with the Standard Model within a $2蟽$ confidence interval. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.00201v3-abstract-full').style.display = 'none'; document.getElementById('2404.00201v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 March, 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">Accepted by PRD</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle preprint 2023-20, KEK preprint 2023-38 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.04340">arXiv:2403.04340</a> <span> [<a href="https://arxiv.org/pdf/2403.04340">pdf</a>, <a href="https://arxiv.org/format/2403.04340">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 a pentaquark state decaying into $pJ/蠄$ in $违(1,2S)$ inclusive decays at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Dong%2C+X">X. Dong</a>, <a href="/search/hep-ex?searchtype=author&query=Zhang%2C+H+Y">H. Y. Zhang</a>, <a href="/search/hep-ex?searchtype=author&query=Wang%2C+X+L">X. L. Wang</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</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=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=Ayad%2C+R">R. Ayad</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=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=Campajola%2C+M">M. Campajola</a>, <a href="/search/hep-ex?searchtype=author&query=%C4%8Cervenkov%2C+D">D. 膶ervenkov</a>, <a href="/search/hep-ex?searchtype=author&query=Chang%2C+M+-">M. -C. Chang</a> , et al. (139 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="2403.04340v3-abstract-short" style="display: inline;"> Using the data samples of 102 million $违(1S)$ and 158 million $违(2S)$ events collected by the Belle detector, we search for a pentaquark state in the $pJ/蠄$ final state from $违(1,2S)$ inclusive decays. Here, the charge-conjugate $\bar{p}J/蠄$ is included. We observe clear $pJ/蠄$ production in $违(1,2S)$ decays and measure the branching fractions to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.04340v3-abstract-full').style.display = 'inline'; document.getElementById('2403.04340v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.04340v3-abstract-full" style="display: none;"> Using the data samples of 102 million $违(1S)$ and 158 million $违(2S)$ events collected by the Belle detector, we search for a pentaquark state in the $pJ/蠄$ final state from $违(1,2S)$ inclusive decays. Here, the charge-conjugate $\bar{p}J/蠄$ is included. We observe clear $pJ/蠄$ production in $违(1,2S)$ decays and measure the branching fractions to be $\mathcal{B}[违(1S) \to pJ/蠄+ anything] = [4.27 \pm 0.16(stat.) \pm 0.20(syst.)] \times 10^{-5}$ and $\mathcal{B}[违(2S) \to pJ/蠄+ anything] = [3.59 \pm 0.14(stat.) \pm 0.16(syst.)] \times 10^{-5}$. We also measure the cross section of inclusive $pJ/蠄$ production in $e^+e^-$ annihilation to be $蟽(e^+e^- \to pJ/蠄+ anything) = [57.5 \pm 2.1 (stat.) \pm 2.5(syst.)]$~fb at $\sqrt{s} = 10.52~\hbox{GeV}$ using an 89.5~fb$^{-1}$ continuum data sample. There is no significant $P_c(4312)^+$, $P_c(4440)^+$ or $P_c(4457)^+$ signal found in the $pJ/蠄$ final states in $违(1,2S)$ inclusive decays. We determine the upper limits of $\mathcal{B}[违(1,2S)\to P_c^{+} + anything] \cdot \mathcal{B}(P_c^{+}\to pJ/蠄)$ to be at the $10^{-6}$ level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.04340v3-abstract-full').style.display = 'none'; document.getElementById('2403.04340v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 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> Belle Preprint 2024-02, KEK Preprint 2023-54 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.02580">arXiv:2402.02580</a> <span> [<a href="https://arxiv.org/pdf/2402.02580">pdf</a>, <a href="https://arxiv.org/format/2402.02580">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.L111102">10.1103/PhysRevD.109.L111102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for a heavy neutral lepton that mixes predominantly with the tau neutrino </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Nayak%2C+M">M. Nayak</a>, <a href="/search/hep-ex?searchtype=author&query=Dey%2C+S">S. Dey</a>, <a href="/search/hep-ex?searchtype=author&query=Soffer%2C+A">A. Soffer</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a> , et al. (143 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="2402.02580v3-abstract-short" style="display: inline;"> We report a search for a heavy neutral lepton (HNL) that mixes predominantly with $谓_蟿$. The search utilizes data collected with the Belle detector at the KEKB asymmetric energy $e^+ e^-$ collider. The data sample was collected at and just below the center-of-mass energies of the $违(4S)$ and $违(5S)$ resonances and has an integrated luminosity of $915~\textrm{fb}^{-1}$, corresponding to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.02580v3-abstract-full').style.display = 'inline'; document.getElementById('2402.02580v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.02580v3-abstract-full" style="display: none;"> We report a search for a heavy neutral lepton (HNL) that mixes predominantly with $谓_蟿$. The search utilizes data collected with the Belle detector at the KEKB asymmetric energy $e^+ e^-$ collider. The data sample was collected at and just below the center-of-mass energies of the $违(4S)$ and $违(5S)$ resonances and has an integrated luminosity of $915~\textrm{fb}^{-1}$, corresponding to $(836\pm 12)\times 10^6$ $e^+e^\to蟿^+蟿^-$ events. We search for production of the HNL (denoted $N$) in the decay $蟿^-\to 蟺^- N$ followed by its decay via $N \to 渭^+渭^- 谓_蟿$. The search focuses on the parameter-space region in which the HNL is long lived, so that the $渭^+渭^-$ originate from a common vertex that is significantly displaced from the collision point of the KEKB beams. Consistent with the expected background yield, one event is observed in the data sample after application of all the event-selection criteria. We report limits on the mixing parameter of the HNL with the $蟿$ neutrino as a function of the HNL mass. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.02580v3-abstract-full').style.display = 'none'; document.getElementById('2402.02580v3-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 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 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">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 Preprint 2023-22, KEK Preprint 2023-44 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D 109 (2024) 11, L111102 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.04807">arXiv:2401.04807</a> <span> [<a href="https://arxiv.org/pdf/2401.04807">pdf</a>, <a href="https://arxiv.org/format/2401.04807">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 Baryon-Number-Violating Processes in $B^-$ Decays to the $\bar螢_{c}^{0} \bar螞_{c}^{-}$ Final State </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Gu%2C+T">T. Gu</a>, <a href="/search/hep-ex?searchtype=author&query=Savinov%2C+V">V. Savinov</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Ayad%2C+R">R. Ayad</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=Campajola%2C+M">M. Campajola</a> , et al. (139 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="2401.04807v2-abstract-short" style="display: inline;"> We report the results of the first search for $B^-$ decays to the $\bar螢_{c}^{0} \bar螞_{c}^{-}$ final state using 711~${\rm fb^{-1}}$ of data collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The results are interpreted in terms of both direct baryon-number-violating $B^-$ decay and $螢_{c}^{0}-\bar螢_{c}^{0}$ oscillations which follow the S… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.04807v2-abstract-full').style.display = 'inline'; document.getElementById('2401.04807v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.04807v2-abstract-full" style="display: none;"> We report the results of the first search for $B^-$ decays to the $\bar螢_{c}^{0} \bar螞_{c}^{-}$ final state using 711~${\rm fb^{-1}}$ of data collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The results are interpreted in terms of both direct baryon-number-violating $B^-$ decay and $螢_{c}^{0}-\bar螢_{c}^{0}$ oscillations which follow the Standard Model decay $B^- \to 螢_{c}^{0} \bar螞_{c}^{-}$. We observe no evidence for baryon number violation and set the 95\% confidence-level upper limits on the ratio of baryon-number-violating and Standard Model branching fractions ${\mathcal{B}(B^- \rightarrow \bar螢_{c}^{0} \bar螞_{c}^{-})}/{\mathcal{B}(B^- \rightarrow 螢_{c}^{0} \bar螞_{c}^{-})}$ to be $< 2.7\%$ and on the $螢_{c}^{0} - \bar螢_{c}^{0}$ oscillation angular frequency $蠅$ to be $< 0.76\ \mathrm{ps}^{-1}$ (equivalent to $蟿_{\rm mix} > 1.3$~ps). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.04807v2-abstract-full').style.display = 'none'; document.getElementById('2401.04807v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 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">7 pages, 2 figures, submitted to Phys. Rev. Lett</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2024-01, KEK Preprint 2023-48 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.04646">arXiv:2401.04646</a> <span> [<a href="https://arxiv.org/pdf/2401.04646">pdf</a>, <a href="https://arxiv.org/ps/2401.04646">ps</a>, <a href="https://arxiv.org/format/2401.04646">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurements of the branching fraction, polarization, and $CP$ asymmetry for the decay $B^0\rightarrow 蠅蠅$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Guan%2C+Y">Y. Guan</a>, <a href="/search/hep-ex?searchtype=author&query=Schwartz%2C+A+J">A. J. Schwartz</a>, <a href="/search/hep-ex?searchtype=author&query=Kinoshita%2C+K">K. Kinoshita</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Ayad%2C+R">R. Ayad</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=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a> , et al. (145 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="2401.04646v1-abstract-short" style="display: inline;"> We present a measurement of $B^{0} \rightarrow 蠅蠅$, a charmless decay into two vector mesons, using 772 $\times 10^6$ $B\overline{B}$ pairs collected with the Belle detector at the KEKB $e^+e^-$ collider. The decay is observed with a significance of 7.9 standard deviations. We measure a branching fraction $\mathcal{B} = (1.53 \pm 0.29 \pm 0.17) \times 10^{-6}$, a fraction of longitudinal polarizat… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.04646v1-abstract-full').style.display = 'inline'; document.getElementById('2401.04646v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.04646v1-abstract-full" style="display: none;"> We present a measurement of $B^{0} \rightarrow 蠅蠅$, a charmless decay into two vector mesons, using 772 $\times 10^6$ $B\overline{B}$ pairs collected with the Belle detector at the KEKB $e^+e^-$ collider. The decay is observed with a significance of 7.9 standard deviations. We measure a branching fraction $\mathcal{B} = (1.53 \pm 0.29 \pm 0.17) \times 10^{-6}$, a fraction of longitudinal polarization $f_L = 0.87 \pm 0.13 \pm 0.13$, and a time-integrated $CP$ asymmetry $A_{CP}$ = $-0.44 \pm 0.43 \pm 0.11$, where the first uncertainties listed are statistical and the second are systematic. This is the first observation of $B^{0} \rightarrow 蠅蠅$, and the first measurements of $f_L$ and $A_{CP}$ for this decay. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.04646v1-abstract-full').style.display = 'none'; document.getElementById('2401.04646v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 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">7 pages, 1 figure, submitted to Phys. Rev. Lett</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2023-21, KEK Preprint 2023-43, UCHEP-24-01 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.20286">arXiv:2310.20286</a> <span> [<a href="https://arxiv.org/pdf/2310.20286">pdf</a>, <a href="https://arxiv.org/format/2310.20286">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"> Measurement of Angular Coefficients of $\bar{B} \to D^* \ell \bar谓_\ell$: Implications for $|V_{cb}|$ and Tests of Lepton Flavor Universality </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Prim%2C+M+T">M. T. Prim</a>, <a href="/search/hep-ex?searchtype=author&query=Bernlochner%2C+F">F. Bernlochner</a>, <a href="/search/hep-ex?searchtype=author&query=Metzner%2C+F">F. Metzner</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a> , et al. (136 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="2310.20286v1-abstract-short" style="display: inline;"> We measure the complete set of angular coefficients $J_i$ for exclusive $\bar{B} \to D^* \ell \bar谓_\ell$ decays ($\ell = e, 渭$). Our analysis uses the full $711\,\mathrm{fb}^{-1}$ Belle data set with hadronic tag-side reconstruction. The results allow us to extract the form factors describing the $B \to D^*$ transition and the Cabibbo-Kobayashi-Maskawa matrix element $|V_{\rm cb}|$. Using recent… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.20286v1-abstract-full').style.display = 'inline'; document.getElementById('2310.20286v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.20286v1-abstract-full" style="display: none;"> We measure the complete set of angular coefficients $J_i$ for exclusive $\bar{B} \to D^* \ell \bar谓_\ell$ decays ($\ell = e, 渭$). Our analysis uses the full $711\,\mathrm{fb}^{-1}$ Belle data set with hadronic tag-side reconstruction. The results allow us to extract the form factors describing the $B \to D^*$ transition and the Cabibbo-Kobayashi-Maskawa matrix element $|V_{\rm cb}|$. Using recent lattice QCD calculations for the hadronic form factors, we find $|V_{\rm cb}| = (41.0 \pm 0.7) \times 10^3 $ using the BGL parameterization, compatible with determinations from inclusive semileptonic decays. We search for lepton flavor universality violation as a function of the hadronic recoil parameter $w$, and investigate the differences of the electron and muon angular distributions. We find no deviation from Standard Model expectations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.20286v1-abstract-full').style.display = 'none'; document.getElementById('2310.20286v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 October, 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 Preprint 2023-18; KEK Preprint 2023-32 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.07412">arXiv:2310.07412</a> <span> [<a href="https://arxiv.org/pdf/2310.07412">pdf</a>, <a href="https://arxiv.org/format/2310.07412">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 baryon and lepton number violating decays $\boldsymbol{D \rightarrow p\ell}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Maity%2C+S">S. Maity</a>, <a href="/search/hep-ex?searchtype=author&query=Garg%2C+R">R. Garg</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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">DM 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=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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bonvicini%2C+G">G. Bonvicini</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=Campajola%2C+M">M. Campajola</a> , et al. (137 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="2310.07412v2-abstract-short" style="display: inline;"> We search for the baryon and lepton number violating charm decays, $D \rightarrow p\ell$, where $D$ is either a $D^0$ or a $\overline{D}^0$ and $\ell$ is a muon or an electron, using a data sample of $921\,\mathrm{fb}^{-1}$ collected by the Belle detector at the KEKB asymmetric energy $e^{+}e^{-}$ collider. In the absence of significant signals, we set upper limits on the branching fractions in th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.07412v2-abstract-full').style.display = 'inline'; document.getElementById('2310.07412v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.07412v2-abstract-full" style="display: none;"> We search for the baryon and lepton number violating charm decays, $D \rightarrow p\ell$, where $D$ is either a $D^0$ or a $\overline{D}^0$ and $\ell$ is a muon or an electron, using a data sample of $921\,\mathrm{fb}^{-1}$ collected by the Belle detector at the KEKB asymmetric energy $e^{+}e^{-}$ collider. In the absence of significant signals, we set upper limits on the branching fractions in the range $(5 - 8) \times 10^{-7}$ at a 90\% confidence level, depending on the decay mode. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.07412v2-abstract-full').style.display = 'none'; document.getElementById('2310.07412v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 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">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 4 figures, PHYSICAL REVIEW D 109, L031101 (2024)[DOI: : 10.1103/PhysRevD.109.L031101]</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint: 2023-15, KEK Preprint 2023-20 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.02739">arXiv:2309.02739</a> <span> [<a href="https://arxiv.org/pdf/2309.02739">pdf</a>, <a href="https://arxiv.org/format/2309.02739">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 charged-lepton flavor violation in $违(2S) \to \ell^\mp蟿^\pm$ ($\ell=e,渭$) decays at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Dhamija%2C+R">R. Dhamija</a>, <a href="/search/hep-ex?searchtype=author&query=Nishida%2C+S">S. Nishida</a>, <a href="/search/hep-ex?searchtype=author&query=Giri%2C+A">A. Giri</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=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=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=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a> , et al. (156 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="2309.02739v2-abstract-short" style="display: inline;"> We report a search for the charged-lepton flavor violation in $违(2S) \to \ell^\mp蟿^\pm$ ($\ell=e,渭$) decays using a $25~\fbi$ $违(2S)$ sample collected by the Belle detector at the KEKB $e^{+}$$e^-$ asymmetric-energy collider. We find no evidence for a signal and set upper limits on the branching fractions ($\mathcal{B}$) at 90\% confidence level. We obtain the most stringent upper limits:… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.02739v2-abstract-full').style.display = 'inline'; document.getElementById('2309.02739v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.02739v2-abstract-full" style="display: none;"> We report a search for the charged-lepton flavor violation in $违(2S) \to \ell^\mp蟿^\pm$ ($\ell=e,渭$) decays using a $25~\fbi$ $违(2S)$ sample collected by the Belle detector at the KEKB $e^{+}$$e^-$ asymmetric-energy collider. We find no evidence for a signal and set upper limits on the branching fractions ($\mathcal{B}$) at 90\% confidence level. We obtain the most stringent upper limits: $\mathcal{B}(\Ytomutau) < 0.23 \times 10^{-6}$ and $\mathcal{B}(\Ytoetau) < 1.12 \times 10^{-6}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.02739v2-abstract-full').style.display = 'none'; document.getElementById('2309.02739v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">11 pages, 3 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 Preprint 2023-14, KEK Preprint 2023-19 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.08900">arXiv:2308.08900</a> <span> [<a href="https://arxiv.org/pdf/2308.08900">pdf</a>, <a href="https://arxiv.org/format/2308.08900">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 charmed strange meson pair production in $违(2S)$ decays and in $e^{+}e^{-}$ annihilation at $\sqrt{s} = 10.52~ \rm{GeV}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Gao%2C+B+S">B. S. Gao</a>, <a href="/search/hep-ex?searchtype=author&query=Zhu%2C+W+J">W. J. Zhu</a>, <a href="/search/hep-ex?searchtype=author&query=Wang%2C+X+L">X. L. Wang</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+A">A. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a> , et al. (143 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="2308.08900v3-abstract-short" style="display: inline;"> We observe the process $违(2S)\to D_s^{(*)+} D_{sJ}^{-}$ and continuum production $e^+e^- \to D_s^{(*)+} D_{sJ}^- $ at $\sqrt{s} = 10.52$ GeV (and their charge conjugates) using the data samples collected by the Belle detector at KEKB, where $D_{sJ}^-$ is $D_{s1}(2536)^-$ or $D^{*}_{s2}(2573)^-$. Both $D_{sJ}^-$ states are identified through their decay into $\bar{K}\bar{D}^{(*)}$. We measure the p… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.08900v3-abstract-full').style.display = 'inline'; document.getElementById('2308.08900v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.08900v3-abstract-full" style="display: none;"> We observe the process $违(2S)\to D_s^{(*)+} D_{sJ}^{-}$ and continuum production $e^+e^- \to D_s^{(*)+} D_{sJ}^- $ at $\sqrt{s} = 10.52$ GeV (and their charge conjugates) using the data samples collected by the Belle detector at KEKB, where $D_{sJ}^-$ is $D_{s1}(2536)^-$ or $D^{*}_{s2}(2573)^-$. Both $D_{sJ}^-$ states are identified through their decay into $\bar{K}\bar{D}^{(*)}$. We measure the products of branching fractions ${\cal B}(违(2S) \to D_{s}^{(*)+} D_{sJ}^-) {\cal B}(D_{sJ}^-\to \bar{K} \bar{D}^{(*)})$ and the Born cross sections $蟽^{\rm Born}(e^+e^- \to D_{s}^{(*)+} D_{sJ}^-) {\cal B}(D_{sJ}^-\to \bar{K} \bar{D}^{(*)})$, and then compare the ratios $R_1 \equiv {\cal B}(违(2S)\to D_{s}^{(*)+} D_{sJ}^-)/{\cal B}(违(2S)\to渭^{+}渭^-)$ for $违(2S)$ decays and $R_2 \equiv 蟽^{\rm Born}(e^+e^-\to D_{s}^{(*)+}D_{sJ}^-)/蟽^{\rm Born}(e^+e^-\to 渭^{+}渭^-)$ for continuum production. We obtain $R_1/R_2 = 9.7\pm 2.3 \pm 1.1$, $6.8 \pm 2.1 \pm 0.8$, $10.2 \pm 3.3 \pm 2.5$, and $3.4 \pm 2.1 \pm 0.5$ for the $D_s^+ D_{s1}(2536)^-$, $D_s^{*+} D_{s1}(2536)^-$, $D_s^+ D_{s2}^{*}(2573)^{-}$, and $D_s^{*+} D_{s2}^{*}(2573)^{-}$ final states in the $D_{sJ}^-\to K^{-} \bar{D}^{(*)0}$ modes, respectively. Therefore, the strong decay is expected to dominate in the $违(2S)\to D_{s}^{(*)+}D_{sJ}^-$ processes. We also measure the ratios of branching fractions ${\cal B}(D_{s1}(2536)^-\to K_S^0 D^{*}(2010)^{-})/{\cal B}(D_{s1}(2536)^-\to K^{-} D^{*}(2007)^0) = 0.48 \pm 0.07 \pm 0.02$ and ${\cal B}(D_{s2}^{*}(2573)^- \to K_S^0 D^-)/{\cal B}(D_{s2}^{*}(2573)^- \to K^{-}D^0) = 0.49 \pm 0.10 \pm 0.02$, which are consistent with isospin symmetry. The second ratio is the first measurement of this quantity. Here, the first uncertainties are statistical and the second are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.08900v3-abstract-full').style.display = 'none'; document.getElementById('2308.08900v3-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 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 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 Preprint 2023-12, KEK Preprint 2023-16 </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/2305.11405">arXiv:2305.11405</a> <span> [<a href="https://arxiv.org/pdf/2305.11405">pdf</a>, <a href="https://arxiv.org/format/2305.11405">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.L111102">10.1103/PhysRevD.108.L111102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for $CP$ violation in $D^{+}_{(s)}\rightarrow K^{+}K^{0}_{S}h^{+}h^{-}$ $(h=K,蟺)$ decays and observation of the Cabibbo-suppressed decay $D^{+}_{s}\rightarrow K^{+}K^{-}K^{0}_{S}蟺^{+}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Moon%2C+H+K">H. K. Moon</a>, <a href="/search/hep-ex?searchtype=author&query=Won%2C+E">E. Won</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</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=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=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a> , et al. (183 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="2305.11405v2-abstract-short" style="display: inline;"> We search for $CP$ violation by measuring a $T$-odd asymmetry in the Cabibbo-suppressed $D^{+}\rightarrow K^{+}K^{0}_{S}蟺^{+}蟺^{-} $ decay, and in the Cabibbo-favored $D^{+}_{s}\rightarrow K^{+}K^{0}_{S}蟺^{+}蟺^{-}$ and $D^{+}\rightarrow K^{+}K^{-}K^{0}_{S}蟺^{+}$ decays. We use 980 ${\rm fb}^{-1}$ of data collected by the Belle detector running at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. T… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.11405v2-abstract-full').style.display = 'inline'; document.getElementById('2305.11405v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.11405v2-abstract-full" style="display: none;"> We search for $CP$ violation by measuring a $T$-odd asymmetry in the Cabibbo-suppressed $D^{+}\rightarrow K^{+}K^{0}_{S}蟺^{+}蟺^{-} $ decay, and in the Cabibbo-favored $D^{+}_{s}\rightarrow K^{+}K^{0}_{S}蟺^{+}蟺^{-}$ and $D^{+}\rightarrow K^{+}K^{-}K^{0}_{S}蟺^{+}$ decays. We use 980 ${\rm fb}^{-1}$ of data collected by the Belle detector running at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The $C\!P$-violating $T$-odd parameter ${a}^{T\text{-}\rm{odd}}_{CP}$ is measured to be ${a}^{T\text{-}\rm{odd}}_{CP}(D^{+}\rightarrow K^{+}K^{0}_{S}蟺^{+}蟺^{-})=(0.34\pm0.87\pm0.32)\%,$ ${a}^{T\text{-}\rm{odd}}_{CP}(D^{+}_{s}\rightarrow K^{+}K^{0}_{S}蟺^{+}蟺^{-})=(-0.46\pm0.63\pm0.38)\%,$ and ${a}^{T\text{-}\rm{odd}}_{CP}(D^{+}\rightarrow K^{+}K^{-}K^{0}_{S}蟺^{+})=(-3.34\pm2.66\pm0.35)\%,$ where the first uncertainty is statistical and the second is systematic. We also report the first observation of the Cabibbo-suppressed decay $D^{+}_{s}\rightarrow K^{+}K^{-}K^{0}_{S}蟺^{+}$. The branching fraction is measured relative to that of the analogous Cabibbo-favored decay : $B(D^{+}_{s}\rightarrow K^{+}K^{-}K^{0}_{S}蟺^{+}) / B(D^{+}_{s}\rightarrow K^{+}K^{0}_{S}蟺^{+}蟺^{-}) = (1.36\pm 0.15\pm 0.04)\%$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.11405v2-abstract-full').style.display = 'none'; document.getElementById('2305.11405v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint:2023-08, KEK Preprint:2023-4 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 108, L111102, 2023 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.04759">arXiv:2305.04759</a> <span> [<a href="https://arxiv.org/pdf/2305.04759">pdf</a>, <a href="https://arxiv.org/format/2305.04759">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for lepton-flavor-violating $蟿^- \to \ell^-蠁$ decays in 2019-2021 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=Ahlburg%2C+P">P. Ahlburg</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=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Bacher%2C+S">S. Bacher</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=Bakich%2C+A+M">A. M. Bakich</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a> , et al. (555 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="2305.04759v3-abstract-short" style="display: inline;"> We report a search for lepton-flavor-violating decays $蟿^- \to \ell^- 蠁$ ($\ell^- =e^-,渭^-$) at the Belle II experiment, using a sample of electron-positron data produced at the SuperKEKB collider in 2019-2021 and corresponding to an integrated luminosity of 190 fb$^{-1}$. We use a new untagged selection for $e^+e^- \to 蟿^+蟿^-$ events, where the signal $蟿$ is searched for as a neutrinoless final s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.04759v3-abstract-full').style.display = 'inline'; document.getElementById('2305.04759v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.04759v3-abstract-full" style="display: none;"> We report a search for lepton-flavor-violating decays $蟿^- \to \ell^- 蠁$ ($\ell^- =e^-,渭^-$) at the Belle II experiment, using a sample of electron-positron data produced at the SuperKEKB collider in 2019-2021 and corresponding to an integrated luminosity of 190 fb$^{-1}$. We use a new untagged selection for $e^+e^- \to 蟿^+蟿^-$ events, where the signal $蟿$ is searched for as a neutrinoless final state of a single charged lepton and a $蠁$ meson and the other $蟿$ is not reconstructed in any specific decay mode, in contrast to previous measurements by the BaBar and Belle experiments. We find no evidence for $蟿^- \to \ell^- 蠁$ decays and obtain upper limits on the branching fractions at 90% confidence level of 23 $\times 10^{-8}$ and 9.7$\times 10^{-8}$ for $蟿^- \rightarrow e^-蠁$ and $蟿^- \rightarrow 渭^-蠁$, respectively <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.04759v3-abstract-full').style.display = 'none'; document.getElementById('2305.04759v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-CONF-2023-004 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.01321">arXiv:2305.01321</a> <span> [<a href="https://arxiv.org/pdf/2305.01321">pdf</a>, <a href="https://arxiv.org/format/2305.01321">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 ${B\to D^{(*)} K^- K^{0}_S}$ decays using the 2019-2022 Belle II data sample </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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=Ahlburg%2C+P">P. Ahlburg</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=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Bacher%2C+S">S. Bacher</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=Bakich%2C+A+M">A. M. Bakich</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a> , et al. (555 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="2305.01321v1-abstract-short" style="display: inline;"> We present a measurement of the branching fractions of four $B^{0,-}\to D^{(*)+,0} K^- K^{0}_S$ decay modes. The measurement is based on data from SuperKEKB electron-positron collisions at the $违(4S)$ resonance collected with the Belle II detector and corresponding to an integrated luminosity of ${362~\text{fb}^{-1}}$. The event yields are extracted from fits to the distributions of the difference… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.01321v1-abstract-full').style.display = 'inline'; document.getElementById('2305.01321v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.01321v1-abstract-full" style="display: none;"> We present a measurement of the branching fractions of four $B^{0,-}\to D^{(*)+,0} K^- K^{0}_S$ decay modes. The measurement is based on data from SuperKEKB electron-positron collisions at the $违(4S)$ resonance collected with the Belle II detector and 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 to separate signal and background, and are efficiency-corrected as a function of the invariant mass of the $K^-K_S^0$ system. We find the branching fractions to be: \[ \text{B}(B^-\to D^0K^-K_S^0)=(1.89\pm 0.16\pm 0.10)\times 10^{-4}, \] \[ \text{B}(\overline B{}^0\to D^+K^-K_S^0)=(0.85\pm 0.11\pm 0.05)\times 10^{-4},\] \[ \text{B}(B^-\to D^{*0}K^-K_S^0)=(1.57\pm 0.27\pm 0.12)\times 10^{-4}, \] \[ \text{B}(\overline B{}^0\to D^{*+}K^-K_S^0)=(0.96\pm 0.18\pm 0.06)\times 10^{-4},\] where the first uncertainty is statistical and the second systematic. 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 $\text{B}(B^-\to D^0K^-K_S^0)$ compared to previous measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.01321v1-abstract-full').style.display = 'none'; document.getElementById('2305.01321v1-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 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-CONF-2023-003 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.08354">arXiv:2303.08354</a> <span> [<a href="https://arxiv.org/pdf/2303.08354">pdf</a>, <a href="https://arxiv.org/format/2303.08354">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.107.112009">10.1103/PhysRevD.107.112009 <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 and $\it CP$ asymmetry of $B^{0} \rightarrow 蟺^{0} 蟺^{0}$ decays using $198 \times 10^6$ $B\overline{B}$ 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=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=Becker%2C+J">J. Becker</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="2303.08354v3-abstract-short" style="display: inline;"> We report measurements of the branching fraction and $\it CP$ asymmetry in $B^{0} \to 蟺^{0} 蟺^{0}$ decays reconstructed at Belle II in an electron-positron collision sample containing $198 \times 10^{6}$ $B\overline{B}$ pairs. We measure a branching fraction $\mathcal{B}(\Bpipi) = (1.38 \pm 0.27 \pm 0.22) \times 10^{-6}$ and a $\it CP$ asymmetry $\Acp(\Bpipi) = 0.14 \pm 0.46 \pm 0.07$, where the f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.08354v3-abstract-full').style.display = 'inline'; document.getElementById('2303.08354v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.08354v3-abstract-full" style="display: none;"> We report measurements of the branching fraction and $\it CP$ asymmetry in $B^{0} \to 蟺^{0} 蟺^{0}$ decays reconstructed at Belle II in an electron-positron collision sample containing $198 \times 10^{6}$ $B\overline{B}$ pairs. We measure a branching fraction $\mathcal{B}(\Bpipi) = (1.38 \pm 0.27 \pm 0.22) \times 10^{-6}$ and a $\it CP$ asymmetry $\Acp(\Bpipi) = 0.14 \pm 0.46 \pm 0.07$, where the first uncertainty is statistical and the second is systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.08354v3-abstract-full').style.display = 'none'; document.getElementById('2303.08354v3-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 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-004, KEK Preprint 2022-59 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2302.12898">arXiv:2302.12898</a> <span> [<a href="https://arxiv.org/pdf/2302.12898">pdf</a>, <a href="https://arxiv.org/format/2302.12898">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.107.L091102">10.1103/PhysRevD.107.L091102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of decay-time-dependent $\textit{CP}$ violation in $B^0 \to J/蠄K^0_S$ decays using 2019-2021 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=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=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=Becker%2C+J">J. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bernieri%2C+E">E. Bernieri</a> , et al. (370 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="2302.12898v1-abstract-short" style="display: inline;"> We report a measurement of the mixing-induced and direct $\textit{CP}$ violation parameters $S_{\text{CP}}$ and $A_{\text{CP}}$ from $B^0 \to J/蠄K^0_S$ decays reconstructed by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The data, collected at the center-of-mass energy of the $违(4S)$ resonance, correspond to $190\text{fb}^{-1}$ of integrated luminosity. We… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.12898v1-abstract-full').style.display = 'inline'; document.getElementById('2302.12898v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.12898v1-abstract-full" style="display: none;"> We report a measurement of the mixing-induced and direct $\textit{CP}$ violation parameters $S_{\text{CP}}$ and $A_{\text{CP}}$ from $B^0 \to J/蠄K^0_S$ decays reconstructed by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The data, collected at the center-of-mass energy of the $违(4S)$ resonance, correspond to $190\text{fb}^{-1}$ of integrated luminosity. We measure ${S_{\text{CP}} = 0.720\pm0.062\pm0.016}$ and $A_{\text{CP}} = 0.094\pm0.044^{+0.042}_{-0.017}$, where the first uncertainties are statistical and the second systematic. In the Standard Model, $S_{\text{CP}}$ equals $\sin(2蠁_1)$ to a good approximation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.12898v1-abstract-full').style.display = 'none'; document.getElementById('2302.12898v1-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 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2302.12791">arXiv:2302.12791</a> <span> [<a href="https://arxiv.org/pdf/2302.12791">pdf</a>, <a href="https://arxiv.org/format/2302.12791">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.107.L091102">10.1103/PhysRevD.107.L091102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $B^0$ lifetime and flavor-oscillation frequency using hadronic decays reconstructed in 2019-2021 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=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=Becker%2C+J">J. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</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="2302.12791v2-abstract-short" style="display: inline;"> We measure the $B^0$ lifetime and flavor-oscillation frequency using $B^0\to D^{(*)-}蟺^+$ decays collected by the Belle II experiment in asymmetric-energy $e^+e^-$ collisions produced by the SuperKEKB collider operating at the $违(4S)$ resonance. We fit the decay-time distribution of signal decays, where the initial flavor is determined by identifying the flavor of the other $B$ meson in the event.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.12791v2-abstract-full').style.display = 'inline'; document.getElementById('2302.12791v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.12791v2-abstract-full" style="display: none;"> We measure the $B^0$ lifetime and flavor-oscillation frequency using $B^0\to D^{(*)-}蟺^+$ decays collected by the Belle II experiment in asymmetric-energy $e^+e^-$ collisions produced by the SuperKEKB collider operating at the $违(4S)$ resonance. We fit the decay-time distribution of signal decays, where the initial flavor is determined by identifying the flavor of the other $B$ meson in the event. The results, based on $33000$ signal decays reconstructed in a data sample corresponding to ${190}\text{fb}^{-1}$, are $蟿_{B^0} = {1.499}\pm{0.013}\pm{0.008}\;\text{ps}$, $螖m_d = {0.516}\pm{0.008}\pm{0.005}\;\text{ps}^{-1}$, where the first uncertainties are statistical and the second are systematic. These results are consistent with the world-average values. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.12791v2-abstract-full').style.display = 'none'; document.getElementById('2302.12791v2-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 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2023-001, KEK Preprint 2022-56 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2302.02127">arXiv:2302.02127</a> <span> [<a href="https://arxiv.org/pdf/2302.02127">pdf</a>, <a href="https://arxiv.org/ps/2302.02127">ps</a>, <a href="https://arxiv.org/format/2302.02127">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.107.112011">10.1103/PhysRevD.107.112011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of the lineshape of $X(3872)$ using $B$ decays to $D^0\overline{D}{}^{*0}K$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Hirata%2C+H">H. Hirata</a>, <a href="/search/hep-ex?searchtype=author&query=Iijima%2C+T">T. Iijima</a>, <a href="/search/hep-ex?searchtype=author&query=Kato%2C+Y">Y. Kato</a>, <a href="/search/hep-ex?searchtype=author&query=Tanida%2C+K">K. Tanida</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</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=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+T">T. Aushev</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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a> , et al. (188 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="2302.02127v2-abstract-short" style="display: inline;"> We present a study of the $X(3872)$ lineshape in the decay $B \to X(3872)K\to D^0\overline{D}{}^{*0}K$ using a data sample of $772\times 10^6$ $B\overline{B}$ pairs collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The peak near the threshold in the $D^0\overline{D}{}^{*0}$ invariant mass spectrum is fitted using a relativistic Breit-Wigner… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.02127v2-abstract-full').style.display = 'inline'; document.getElementById('2302.02127v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.02127v2-abstract-full" style="display: none;"> We present a study of the $X(3872)$ lineshape in the decay $B \to X(3872)K\to D^0\overline{D}{}^{*0}K$ using a data sample of $772\times 10^6$ $B\overline{B}$ pairs collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The peak near the threshold in the $D^0\overline{D}{}^{*0}$ invariant mass spectrum is fitted using a relativistic Breit-Wigner lineshape. We determine the mass and width parameters to be $m = 3873.71 ^{+0.56}_{-0.50} ({\rm stat}) \pm0.13 ({\rm syst}) ~{\rm MeV}/c^2$ and $螕_0 = 5.2 ^{+2.2}_{-1.5} ({\rm stat}) \pm 0.4 ({\rm syst})~{\rm MeV}$, respectively. The branching fraction is found to be ${\cal B} (B^+\to X(3872)K^+) \times {\cal{B}}(X(3872) \to D^0\overline{D}{}^{*0}) = (0.97 ^{+0.21}_{-0.18} ({\rm stat}) \pm 0.10 ({\rm syst})) \times 10^{-4}$. The signal from $B^0$ decays is observed for the first time with $5.2蟽$ significance, and the ratio of branching fractions between charged and neutral $B$ decays is measured to be ${\cal B}(B^0\to X(3872)K^0)/{\cal B}(B^+ \to X(3872)K^+) = 1.34^{+0.47}_{-0.40} ({\rm stat}) ^{+0.10}_{-0.12} ({\rm syst})$. The peak is also studied using a Flatt茅 lineshape. We determine the lower limit on the $D\overline{D}{}^{*}$ coupling constant $g$ to be $0.075$ at 95% credibility in the parameter region where the ratio of $g$ to the mass difference from the $D^0\overline{D}{}^{*0}$ threshold is equal to $-15.11~{\rm GeV}^{-1}$, as measured by LHCb. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.02127v2-abstract-full').style.display = 'none'; document.getElementById('2302.02127v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">submitted to Phys. Rev D</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2023-03, KEK Preprint 2022-52 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 107, 112011 (2003) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.09421">arXiv:2301.09421</a> <span> [<a href="https://arxiv.org/pdf/2301.09421">pdf</a>, <a href="https://arxiv.org/format/2301.09421">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.108.012004">10.1103/PhysRevD.108.012004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First measurement of the Q^2 distribution of X(3915) single-tag two-photon production </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Teramoto%2C+Y">Y. Teramoto</a>, <a href="/search/hep-ex?searchtype=author&query=Uehara%2C+S">S. Uehara</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Aushev%2C+T">T. Aushev</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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a> , et al. (181 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="2301.09421v2-abstract-short" style="display: inline;"> We report the first measurement of the $Q^2$ distribution of $X(3915)$ produced by single-tag two-photon interactions. The decay mode used is $X(3915) \rightarrow J/蠄蠅$. The covered $Q^2$ region is from 1.5 (GeV/$c$)$^2$ to 10.0 (GeV/$c$)$^2$. We observe $7.9\pm 3.1({\rm stat.})\pm 1.5({\rm syst.})$ events, where we expect $4.1\pm 0.7$ events based on the $Q^2=0$ result from the no-tag two-photon… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.09421v2-abstract-full').style.display = 'inline'; document.getElementById('2301.09421v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.09421v2-abstract-full" style="display: none;"> We report the first measurement of the $Q^2$ distribution of $X(3915)$ produced by single-tag two-photon interactions. The decay mode used is $X(3915) \rightarrow J/蠄蠅$. The covered $Q^2$ region is from 1.5 (GeV/$c$)$^2$ to 10.0 (GeV/$c$)$^2$. We observe $7.9\pm 3.1({\rm stat.})\pm 1.5({\rm syst.})$ events, where we expect $4.1\pm 0.7$ events based on the $Q^2=0$ result from the no-tag two-photon process, extrapolated to higher $Q^2$ region using the $c\bar{c}$ model of Schuler, Berends, and van Gulik. The shape of the distribution is also consistent with this model; we note that statistical uncertainties are large. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.09421v2-abstract-full').style.display = 'none'; document.getElementById('2301.09421v2-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 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">10 pages, 9 figures, 3 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle preprint 2023-01, KEK preprint 2022-48 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review D 108, 012004 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.08587">arXiv:2301.08587</a> <span> [<a href="https://arxiv.org/pdf/2301.08587">pdf</a>, <a href="https://arxiv.org/format/2301.08587">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.107.L051101">10.1103/PhysRevD.107.L051101 <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 $B^0_s \rightarrow 蟺^0 蟺^0$ at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</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=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=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a> , et al. (189 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="2301.08587v1-abstract-short" style="display: inline;"> We report the results of the first search for the decay $B_s^0\rightarrow蟺^0蟺^0$ using $121.4\ \rm fb^{-1}$ of data collected at the $违(5\rm S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We observe no signal and set a 90\% confidence level upper limit of $7.7\times 10^{-6}$ on the $B_s^0\rightarrow蟺^0蟺^0$ decay branching fraction. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.08587v1-abstract-full" style="display: none;"> We report the results of the first search for the decay $B_s^0\rightarrow蟺^0蟺^0$ using $121.4\ \rm fb^{-1}$ of data collected at the $违(5\rm S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We observe no signal and set a 90\% confidence level upper limit of $7.7\times 10^{-6}$ on the $B_s^0\rightarrow蟺^0蟺^0$ decay branching fraction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.08587v1-abstract-full').style.display = 'none'; document.getElementById('2301.08587v1-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 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2022-31, KEK Preprint 2022-42 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D 107 (2023) 5, L051101 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.08266">arXiv:2301.08266</a> <span> [<a href="https://arxiv.org/pdf/2301.08266">pdf</a>, <a href="https://arxiv.org/format/2301.08266">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.131.051804">10.1103/PhysRevLett.131.051804 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A test of light-lepton universality in the rates of inclusive semileptonic $B$-meson 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=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=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=Becker%2C+J">J. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bernieri%2C+E">E. Bernieri</a>, <a href="/search/hep-ex?searchtype=author&query=Bernlochner%2C+F+U">F. U. Bernlochner</a> , et al. (327 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="2301.08266v2-abstract-short" style="display: inline;"> We present the first measurement of the ratio of branching fractions of inclusive semileptonic $B$-meson decays, $R(X_{e/渭}) = \mathcal{B}(B\to X \, e \, 谓) / \mathcal{B}(B\to X \, 渭\, 谓)$, a precision test of electron-muon universality, using data corresponding to $189\,\mathrm{fb}^{-1}$ from electron-positron collisions collected with the Belle II detector. In events where the partner $B$ meson… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.08266v2-abstract-full').style.display = 'inline'; document.getElementById('2301.08266v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.08266v2-abstract-full" style="display: none;"> We present the first measurement of the ratio of branching fractions of inclusive semileptonic $B$-meson decays, $R(X_{e/渭}) = \mathcal{B}(B\to X \, e \, 谓) / \mathcal{B}(B\to X \, 渭\, 谓)$, a precision test of electron-muon universality, using data corresponding to $189\,\mathrm{fb}^{-1}$ from electron-positron collisions collected with the Belle II detector. In events where the partner $B$ meson is fully reconstructed, we use fits to the lepton momentum spectra above $1.3\,\mathrm{GeV}/c$ to obtain $R(X_{e/渭}) = 1.007 \pm 0.009~(\mathrm{stat}) \pm 0.019~(\mathrm{syst})$, which is the most precise lepton-universality test of its kind and agrees with the standard-model expectation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.08266v2-abstract-full').style.display = 'none'; document.getElementById('2301.08266v2-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 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2022-009 KEK Preprint 2022-45 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 131, 051804 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.07529">arXiv:2301.07529</a> <span> [<a href="https://arxiv.org/pdf/2301.07529">pdf</a>, <a href="https://arxiv.org/format/2301.07529">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.108.012002">10.1103/PhysRevD.108.012002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Differential Distributions of $B \to D^* \ell \bar 谓_\ell$ and Implications on $|V_{cb}|$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Prim%2C+M+T">M. T. Prim</a>, <a href="/search/hep-ex?searchtype=author&query=Bernlochner%2C+F">F. Bernlochner</a>, <a href="/search/hep-ex?searchtype=author&query=Metzner%2C+F">F. Metzner</a>, <a href="/search/hep-ex?searchtype=author&query=Lieret%2C+K">K. Lieret</a>, <a href="/search/hep-ex?searchtype=author&query=Kuhr%2C+T">T. Kuhr</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</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=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=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a> , et al. (190 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="2301.07529v1-abstract-short" style="display: inline;"> We present a measurement of the differential shapes of exclusive $B\to D^* \ell \bar谓_\ell$ ($B = B^-, \bar{B}^0 $ and $\ell = e, 渭$) decays with hadronic tag-side reconstruction for the full Belle data set of $711\,\mathrm{fb}^{-1}$ integrated luminosity. We extract the Caprini-Lellouch-Neubert (CLN) and Boyd-Grinstein-Lebed (BGL) form factor parameters and use an external input for the absolute… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.07529v1-abstract-full').style.display = 'inline'; document.getElementById('2301.07529v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.07529v1-abstract-full" style="display: none;"> We present a measurement of the differential shapes of exclusive $B\to D^* \ell \bar谓_\ell$ ($B = B^-, \bar{B}^0 $ and $\ell = e, 渭$) decays with hadronic tag-side reconstruction for the full Belle data set of $711\,\mathrm{fb}^{-1}$ integrated luminosity. We extract the Caprini-Lellouch-Neubert (CLN) and Boyd-Grinstein-Lebed (BGL) form factor parameters and use an external input for the absolute branching fractions to determine the Cabibbo-Kobayashi-Maskawa matrix element and find $|V_{cb}|_\mathrm{CLN} = (40.1\pm0.9)\times 10^{-3}$ and $|V_{cb}|_\mathrm{BGL} = (40.6\pm 0.9)\times 10^{-3}$ with the zero-recoil lattice QCD point $\mathcal{F}(1) = 0.906 \pm 0.013$. We also perform a study of the impact of preliminary beyond zero-recoil lattice QCD calculations on the $|V_{cb}|$ determinations. Additionally, we present the lepton flavor universality ratio $R_{e渭} = \mathcal{B}(B \to D^* e \bar谓_e) / \mathcal{B}(B \to D^* 渭\bar谓_渭) = 0.990 \pm 0.021 \pm 0.023$, the electron and muon forward-backward asymmetry and their difference $螖A_{FB}=0.022\pm0.026\pm 0.007$, and the electron and muon $D^*$ longitudinal polarization fraction and their difference $螖F_L^{D^*} = 0.034 \pm 0.024 \pm 0.007$. The uncertainties quoted correspond to the statistical and systematic uncertainties, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.07529v1-abstract-full').style.display = 'none'; document.getElementById('2301.07529v1-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 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2022-34; KEK Preprint 2022-47 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.04716">arXiv:2301.04716</a> <span> [<a href="https://arxiv.org/pdf/2301.04716">pdf</a>, <a href="https://arxiv.org/format/2301.04716">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 $B^{0} \rightarrow D^{*-} \ell^{+} 谓_{\ell}$ branching ratio and $|V_{cb}|$ with a fully reconstructed accompanying $B$ meson in 2019-2021 Belle II data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Aziz%2C+T">T. Aziz</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=Baehr%2C+S">S. Baehr</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bakich%2C+A+M">A. M. Bakich</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a> , et al. (561 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="2301.04716v1-abstract-short" style="display: inline;"> We present a measurement of the $B^{0} \rightarrow D^{*-} \ell^{+} 谓_{\ell}$ ($\ell=e,渭$) branching ratio and of the CKM parameter $|V_{cb}|$ using signal decays accompanied by a fully reconstructed $B$ meson. The Belle II data set of electron-positron collisions at the $违(4S)$ resonance, corresponding to 189.3$\,$fb$^{-1}$ of integrated luminosity, is analyzed. With the Caprini-Lellouch-Neubert f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.04716v1-abstract-full').style.display = 'inline'; document.getElementById('2301.04716v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.04716v1-abstract-full" style="display: none;"> We present a measurement of the $B^{0} \rightarrow D^{*-} \ell^{+} 谓_{\ell}$ ($\ell=e,渭$) branching ratio and of the CKM parameter $|V_{cb}|$ using signal decays accompanied by a fully reconstructed $B$ meson. The Belle II data set of electron-positron collisions at the $违(4S)$ resonance, corresponding to 189.3$\,$fb$^{-1}$ of integrated luminosity, is analyzed. With the Caprini-Lellouch-Neubert form factor parameterization, the parameters $畏_{\rm EW} F(1) |V_{cb}|$ and $蟻^{2}$ are extracted, where $畏_{\rm EW}$ is an electroweak correction, $F(1)$ is a normalization factor and $蟻^{2}$ is a form factor shape parameter. We reconstruct 516 signal decays and thereby obtain $\mathcal{B} (B^{0} \rightarrow D^{*-} \ell^{+} 谓_{\ell} ) = \left(5.27 \pm 0.22~\rm{\left(stat\right)} \pm 0.38~\rm{\left(syst\right)}\right) \%$, $畏_{EW} F(1) |V_{cb}| \times 10^{3} = 34.6 \pm 1.8~\rm{\left(stat\right)} \pm 1.7~\rm{\left(syst\right)}$, and $蟻^{2} = 0.94 \pm 0.18~\rm{\left(stat\right)} \pm 0.11~\rm{\left(syst\right)}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.04716v1-abstract-full').style.display = 'none'; document.getElementById('2301.04716v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.04128">arXiv:2212.04128</a> <span> [<a href="https://arxiv.org/pdf/2212.04128">pdf</a>, <a href="https://arxiv.org/ps/2212.04128">ps</a>, <a href="https://arxiv.org/format/2212.04128">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.130.261802">10.1103/PhysRevLett.130.261802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the lepton flavour violating decays $B^{+} \to K^{+} 蟿^\pm \ell^\mp$ ($\ell = e, 渭$) at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Watanuki%2C+S">S. Watanuki</a>, <a href="/search/hep-ex?searchtype=author&query=de+Marino%2C+G">G. de Marino</a>, <a href="/search/hep-ex?searchtype=author&query=Trabelsi%2C+K">K. Trabelsi</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bonvicini%2C+G">G. Bonvicini</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a> , et al. (154 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.04128v1-abstract-short" style="display: inline;"> We present a search for the lepton-flavour-violating decays $B^+ \to K^+ 蟿^\pm \ell^\mp$, with $\ell = (e, 渭)$, using the full data sample of $772 \times 10^6$ $B\overline{B}$ pairs recorded by the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We use events in which one $B$ meson is fully reconstructed in a hadronic decay mode. We find no evidence for $B^\pm \to K^\pm 蟿\ell$ dec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.04128v1-abstract-full').style.display = 'inline'; document.getElementById('2212.04128v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.04128v1-abstract-full" style="display: none;"> We present a search for the lepton-flavour-violating decays $B^+ \to K^+ 蟿^\pm \ell^\mp$, with $\ell = (e, 渭)$, using the full data sample of $772 \times 10^6$ $B\overline{B}$ pairs recorded by the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We use events in which one $B$ meson is fully reconstructed in a hadronic decay mode. We find no evidence for $B^\pm \to K^\pm 蟿\ell$ decays and set upper limits on their branching fractions at the 90% confidence level in the $(1$-$3) \times 10^{-5}$ range. The obtained limits are the world's best results. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.04128v1-abstract-full').style.display = 'none'; document.getElementById('2212.04128v1-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, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.15270">arXiv:2211.15270</a> <span> [<a href="https://arxiv.org/pdf/2211.15270">pdf</a>, <a href="https://arxiv.org/format/2211.15270">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"> Reconstruction of $B \to 蟻\ell 谓_\ell$ decays identified using hadronic decays of the recoil $B$ meson in 2019 -- 2021 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bacher%2C+S">S. Bacher</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baehr%2C+S">S. Baehr</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bakich%2C+A+M">A. M. Bakich</a> , et al. (560 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="2211.15270v1-abstract-short" style="display: inline;"> We present results on the semileptonic decays $B^0 \to 蟻^- \ell^+ 谓_\ell$ and $B^+ \to 蟻^0 \ell^+ 谓_\ell$ in a sample corresponding to 189.9/fb of Belle II data at the SuperKEKB $e^- e^+$ collider. Signal decays are identified using full reconstruction of the recoil $B$ meson in hadronic final states. We determine the total branching fractions via fits to the distributions of the square of the "mi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.15270v1-abstract-full').style.display = 'inline'; document.getElementById('2211.15270v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.15270v1-abstract-full" style="display: none;"> We present results on the semileptonic decays $B^0 \to 蟻^- \ell^+ 谓_\ell$ and $B^+ \to 蟻^0 \ell^+ 谓_\ell$ in a sample corresponding to 189.9/fb of Belle II data at the SuperKEKB $e^- e^+$ collider. Signal decays are identified using full reconstruction of the recoil $B$ meson in hadronic final states. We determine the total branching fractions via fits to the distributions of the square of the "missing" mass in the event and the dipion mass in the signal candidate and find ${\mathcal{B}(B^0\to蟻^-\ell^+ 谓_\ell) = (4.12 \pm 0.64(\mathrm{stat}) \pm 1.16(\mathrm{syst})) \times 10^{-4}}$ and ${\mathcal{B}({B^+\to蟻^0\ell^+谓_\ell}) = (1.77 \pm 0.23 (\mathrm{stat}) \pm 0.36 (\mathrm{syst})) \times 10^{-4}}$ where the dominant systematic uncertainty comes from modeling the nonresonant $B\to (蟺蟺)\ell^+谓_\ell$ contribution. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.15270v1-abstract-full').style.display = 'none'; document.getElementById('2211.15270v1-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, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-CONF-PH-2022-029 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.11251">arXiv:2211.11251</a> <span> [<a href="https://arxiv.org/pdf/2211.11251">pdf</a>, <a href="https://arxiv.org/format/2211.11251">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 $B^+ \rightarrow p \overline{n} 蟺^0$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Chu%2C+K+-">K. -N. Chu</a>, <a href="/search/hep-ex?searchtype=author&query=Lin%2C+Y+-">Y. -R. Lin</a>, <a href="/search/hep-ex?searchtype=author&query=Wang%2C+M+-">M. -Z. Wang</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=Aihara%2C+H">H. Aihara</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=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bonvicini%2C+G">G. Bonvicini</a> , et al. (181 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="2211.11251v3-abstract-short" style="display: inline;"> We search for the tree-diagram dominated process $B^+ \rightarrow p \overline{n} 蟺^0$, using a data sample of $772 \times 10^6~B\overline B$ pairs collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. This is the first search with the Belle detector for a decay mode including an anti-neutron. No significant signal is observed and an $90\%$ cre… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.11251v3-abstract-full').style.display = 'inline'; document.getElementById('2211.11251v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.11251v3-abstract-full" style="display: none;"> We search for the tree-diagram dominated process $B^+ \rightarrow p \overline{n} 蟺^0$, using a data sample of $772 \times 10^6~B\overline B$ pairs collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. This is the first search with the Belle detector for a decay mode including an anti-neutron. No significant signal is observed and an $90\%$ credible upper limit on the branching fraction is set at $6.1\times10^{-6}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.11251v3-abstract-full').style.display = 'none'; document.getElementById('2211.11251v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 2 figures, 1 table. To be submitted to PRD. arXiv admin note: text overlap with arXiv:1912.05999</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2022-25; KEK Preprint 2022-34 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.13143">arXiv:2210.13143</a> <span> [<a href="https://arxiv.org/pdf/2210.13143">pdf</a>, <a href="https://arxiv.org/format/2210.13143">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 $|V_{cb}|$ from $B\to D\ell谓$ decays using 2019-2021 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Aziz%2C+T">T. Aziz</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bacher%2C+S">S. Bacher</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baehr%2C+S">S. Baehr</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a> , et al. (570 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="2210.13143v1-abstract-short" style="display: inline;"> We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element $V_{cb}$ using $B\to D\ell谓$ decays. The result is based on $e^+e^-\to违(4S)$ data recorded by the Belle II detector corresponding to 189.2/fb of integrated luminosity. The semileptonic decays $B^0\to D^-(\to K^+蟺^-蟺^-)\ell^+谓_\ell$ and $B^+\to\bar D^0(\to K^+蟺^-)\ell^+谓_\ell$ are reconstructed, where… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.13143v1-abstract-full').style.display = 'inline'; document.getElementById('2210.13143v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.13143v1-abstract-full" style="display: none;"> We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element $V_{cb}$ using $B\to D\ell谓$ decays. The result is based on $e^+e^-\to违(4S)$ data recorded by the Belle II detector corresponding to 189.2/fb of integrated luminosity. The semileptonic decays $B^0\to D^-(\to K^+蟺^-蟺^-)\ell^+谓_\ell$ and $B^+\to\bar D^0(\to K^+蟺^-)\ell^+谓_\ell$ are reconstructed, where $\ell$ is either electron or a muon. The second $B$ meson in the $违(4S)$ event is not explicitly reconstructed. Using the diamond-frame method, we determine the $B$ meson four-momentum and thus the hadronic recoil. We extract the partial decay rates as functions of $w$ and perform a fit to the decay form-factor and the CKM parameter $|V_{cb}|$ using the BGL parameterization of the form factor and lattice QCD input from the FNAL/MILC and HPQCD collaborations. We obtain $畏_{EW}|V_{cb}|=(38.53\pm 1.15)\times 10^{-3}$, where $畏_{EW}$ is an electroweak correction, and the error accounts for theoretical and experimental sources of uncertainty. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.13143v1-abstract-full').style.display = 'none'; document.getElementById('2210.13143v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-CONF-PH-2022-010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.10220">arXiv:2210.10220</a> <span> [<a href="https://arxiv.org/pdf/2210.10220">pdf</a>, <a href="https://arxiv.org/format/2210.10220">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 photon-energy spectrum in inclusive $B\rightarrow X_{s}纬$ decays identified using hadronic decays of the recoil $B$ meson in 2019-2021 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Aziz%2C+T">T. Aziz</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bacher%2C+S">S. Bacher</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baehr%2C+S">S. Baehr</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a> , et al. (573 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="2210.10220v1-abstract-short" style="display: inline;"> We measure the photon-energy spectrum in radiative bottom-meson ($B$) decays into inclusive final states involving a strange hadron and a photon. We use SuperKEKB electron-positron collisions corresponding to $189~\mathrm{fb}^{-1}$ of integrated luminosity collected at the $违(4S)$ resonance by the Belle II experiment. The partner $B$ candidates are fully reconstructed using a large number of hadro… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.10220v1-abstract-full').style.display = 'inline'; document.getElementById('2210.10220v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.10220v1-abstract-full" style="display: none;"> We measure the photon-energy spectrum in radiative bottom-meson ($B$) decays into inclusive final states involving a strange hadron and a photon. We use SuperKEKB electron-positron collisions corresponding to $189~\mathrm{fb}^{-1}$ of integrated luminosity collected at the $违(4S)$ resonance by the Belle II experiment. The partner $B$ candidates are fully reconstructed using a large number of hadronic channels. The $B \rightarrow X_s 纬$ partial branching fractions are measured as a function of photon energy in the signal $B$ meson rest frame in eight bins above $1.8~\mathrm{GeV}$. The background-subtracted signal yield for this photon energy region is $343 \pm 122$ events. Integrated branching fractions for three photon energy thresholds of $1.8~\mathrm{GeV}$, $2.0~\mathrm{GeV}$, and $2.1~\mathrm{GeV}$ are also reported, and found to be in agreement with world averages. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.10220v1-abstract-full').style.display = 'none'; document.getElementById('2210.10220v1-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 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-CONF-PH-2022-018 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.04224">arXiv:2210.04224</a> <span> [<a href="https://arxiv.org/pdf/2210.04224">pdf</a>, <a href="https://arxiv.org/format/2210.04224">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 untagged $B^0\to蟺^- \ell^+ 谓_{\ell}$ decays using 2019-2021 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=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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Aziz%2C+T">T. Aziz</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bacher%2C+S">S. Bacher</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baehr%2C+S">S. Baehr</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bakich%2C+A+M">A. M. Bakich</a>, <a href="/search/hep-ex?searchtype=author&query=Bambade%2C+P">P. Bambade</a> , et al. (568 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2210.04224v2-abstract-short" style="display: inline;"> We present an analysis of the charmless semileptonic decay $B^0\to蟺^- \ell^+ 谓_{\ell}$, where $\ell = e, 渭$, from 198.0 million pairs of $B\bar{B}$ mesons recorded by the Belle II detector at the SuperKEKB electron-positron collider. The decay is reconstructed without identifying the partner $B$ meson. The partial branching fractions are measured independently for $B^0\to蟺^- e^+ 谓_{e}$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.04224v2-abstract-full').style.display = 'inline'; document.getElementById('2210.04224v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.04224v2-abstract-full" style="display: none;"> We present an analysis of the charmless semileptonic decay $B^0\to蟺^- \ell^+ 谓_{\ell}$, where $\ell = e, 渭$, from 198.0 million pairs of $B\bar{B}$ mesons recorded by the Belle II detector at the SuperKEKB electron-positron collider. The decay is reconstructed without identifying the partner $B$ meson. The partial branching fractions are measured independently for $B^0\to蟺^- e^+ 谓_{e}$ and $B^0\to蟺^- 渭^+ 谓_渭$ as functions of $q^{2}$ (momentum transfer squared), using 3896 $B^0\to蟺^- e^+ 谓_{e}$ and 5466 $B^0\to蟺^- 渭^+ 谓_渭$ decays. The total branching fraction is found to be $(1.426 \pm 0.056 \pm 0.125) \times 10^{-4}$ for $B^0\to蟺^- \ell^+ 谓_{\ell}$ decays, where the uncertainties are statistical and systematic, respectively. By fitting the measured partial branching fractions as functions of $q^{2}$, together with constraints on the nonperturbative hadronic contribution from lattice QCD calculations, the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element $V_{ub}$, $(3.55 \pm 0.12 \pm 0.13 \pm 0.17) \times 10^{-3}$, is extracted. 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('2210.04224v2-abstract-full').style.display = 'none'; document.getElementById('2210.04224v2-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 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-CONF-PH-2022-017 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.09547">arXiv:2209.09547</a> <span> [<a href="https://arxiv.org/pdf/2209.09547">pdf</a>, <a href="https://arxiv.org/format/2209.09547">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 decay-time dependent $CP$ violation in $B^0 \rightarrow K^0_S K^0_S K^0_S$ using 2019--2021 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Aziz%2C+T">T. Aziz</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bacher%2C+S">S. Bacher</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baehr%2C+S">S. Baehr</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a> , et al. (570 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="2209.09547v2-abstract-short" style="display: inline;"> We report a measurement of decay-time dependent $CP$-violating parameters in $B^0 \rightarrow K^0_S K^0_S K^0_S$ decays. We use $(198.0 \pm 3.0) \times 10^6\ B\overline{B}$ pairs collected at the $违(4S)$ resonance with the Belle II detector at the SuperKEKB asymmetric-energy $e^+e^-$ collider. The observed mixing-induced and direct $CP$ violation parameters are… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.09547v2-abstract-full').style.display = 'inline'; document.getElementById('2209.09547v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.09547v2-abstract-full" style="display: none;"> We report a measurement of decay-time dependent $CP$-violating parameters in $B^0 \rightarrow K^0_S K^0_S K^0_S$ decays. We use $(198.0 \pm 3.0) \times 10^6\ B\overline{B}$ pairs collected at the $违(4S)$ resonance with the Belle II detector at the SuperKEKB asymmetric-energy $e^+e^-$ collider. The observed mixing-induced and direct $CP$ violation parameters are $\mathcal{S} = -1.86\ _{-0.46}^{+0.91}~{\rm (stat)} \pm 0.09~{\rm (syst)}$ and $\mathcal{A} = -0.22\ _{-0.27}^{+0.30}~{\rm (stat)} \pm 0.04~{\rm (syst)}$, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.09547v2-abstract-full').style.display = 'none'; document.getElementById('2209.09547v2-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, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 4 figures; added a reference</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-CONF-PH-2022-007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.08583">arXiv:2209.08583</a> <span> [<a href="https://arxiv.org/pdf/2209.08583">pdf</a>, <a href="https://arxiv.org/format/2209.08583">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/JHEP01(2023)055">10.1007/JHEP01(2023)055 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evidence for the singly Cabibbo-suppressed decay $惟^0_c\to螢^-蟺^+$ and search for $惟^0_c\to螢^-K^+$ and $惟^-K^+$ decays at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Han%2C+X">X. Han</a>, <a href="/search/hep-ex?searchtype=author&query=Jia%2C+S">S. Jia</a>, <a href="/search/hep-ex?searchtype=author&query=Yuan%2C+L">L. Yuan</a>, <a href="/search/hep-ex?searchtype=author&query=Shen%2C+C+P">C. P. Shen</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</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=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=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=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=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a> , et al. (148 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="2209.08583v2-abstract-short" style="display: inline;"> Using a data sample of 980 fb$^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we study for the first time the singly Cabibbo-suppressed decays $惟^0_c\to螢^{-}蟺^{+}$ and $惟^-K^+$ and the doubly Cabibbo-suppressed decay $惟^0_c\to 螢^- K^{+}$. Evidence for an $惟^0_c$ signal in the $惟^0_c\to螢^-蟺^+$ mode is reported with a significance of $4.5蟽$ including systema… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.08583v2-abstract-full').style.display = 'inline'; document.getElementById('2209.08583v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.08583v2-abstract-full" style="display: none;"> Using a data sample of 980 fb$^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we study for the first time the singly Cabibbo-suppressed decays $惟^0_c\to螢^{-}蟺^{+}$ and $惟^-K^+$ and the doubly Cabibbo-suppressed decay $惟^0_c\to 螢^- K^{+}$. Evidence for an $惟^0_c$ signal in the $惟^0_c\to螢^-蟺^+$ mode is reported with a significance of $4.5蟽$ including systematic uncertainties. The ratio of branching fractions to the normalization mode $惟_c^0\to 惟^-蟺^+$ is measured to be $${\cal B}(惟_{c}^{0} \to 螢^{-} 蟺^{+} )/{\cal B}(惟_c^0\to 惟^-蟺^+)=0.253\pm 0.053({\rm stat.})\pm 0.030({\rm syst.}).$$ No significant signals of $惟^0_c\to螢^-K^+$ and $惟^-K^+$ modes are found. The upper limits at $90\%$ confidence level on ratios of branching fractions are determined to be $${\cal B}(惟_{c}^{0} \to 螢^{-} K ^{+})/{\cal B}(惟_c^0\to 惟^-蟺^+) < 0.070$$ and $${\cal B}(惟_{c}^{0} \to 惟^{-}K^{+})/{\cal B}(惟_c^0\to 惟^-蟺^+) < 0.29.$$ <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.08583v2-abstract-full').style.display = 'none'; document.getElementById('2209.08583v2-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, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2022-20; KEK Preprint 2022-28 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.05154">arXiv:2209.05154</a> <span> [<a href="https://arxiv.org/pdf/2209.05154">pdf</a>, <a href="https://arxiv.org/format/2209.05154">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the branching fractions and $CP$ asymmetries of $B^+ \rightarrow 蟺^+ 蟺^0$ and $B^+ \rightarrow K^+ 蟺^0$ decays in 2019-2021 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Aziz%2C+T">T. Aziz</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=Baehr%2C+S">S. Baehr</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bakich%2C+A+M">A. M. Bakich</a> , et al. (562 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="2209.05154v2-abstract-short" style="display: inline;"> We determine the branching fractions ${\mathcal{B}}$ and $CP$ asymmetries ${\mathcal{A}_{\it CP}}$ of the decays $B^+ \rightarrow 蟺^+ 蟺^0$ and $B^+ \rightarrow K^+ 蟺^0$. The results are based on a data set containing 198 million bottom-antibottom meson pairs corresponding to an integrated luminosity of $190\;\text{fb}^{-1}$ recorded by the Belle II detector in energy-asymmetric electron-positron c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.05154v2-abstract-full').style.display = 'inline'; document.getElementById('2209.05154v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.05154v2-abstract-full" style="display: none;"> We determine the branching fractions ${\mathcal{B}}$ and $CP$ asymmetries ${\mathcal{A}_{\it CP}}$ of the decays $B^+ \rightarrow 蟺^+ 蟺^0$ and $B^+ \rightarrow K^+ 蟺^0$. The results are based on a data set containing 198 million bottom-antibottom meson pairs corresponding to an integrated luminosity of $190\;\text{fb}^{-1}$ recorded by the Belle II detector in energy-asymmetric electron-positron collisions at the $违(4S)$ resonance. We measure ${\mathcal{B}(B^+ \rightarrow 蟺^+ 蟺^0) = (6.12 \pm 0.53 \pm 0.53)\times 10^{-6}}$, ${\mathcal{B}(B^+ \rightarrow K^+ 蟺^0) = (14.30 \pm 0.69 \pm 0.79)\times 10^{-6}}$, ${\mathcal{A}_{\it CP}(B^+ \rightarrow 蟺^+ 蟺^0) = -0.085 \pm 0.085 \pm 0.019}$, and ${\mathcal{A}_{\it CP}(B^+ \rightarrow K^+ 蟺^0) = 0.014 \pm 0.047 \pm 0.010}$, where the first uncertainties are statistical and the second are systematic. These results improve a previous Belle II measurement and agree with the world averages. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.05154v2-abstract-full').style.display = 'none'; document.getElementById('2209.05154v2-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, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-CONF-PH-2022-008 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.14218">arXiv:2208.14218</a> <span> [<a href="https://arxiv.org/pdf/2208.14218">pdf</a>, <a href="https://arxiv.org/format/2208.14218">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 rare decays $B^{+} \to D_{s}^{(\ast)+}畏$, $D_{s}^{(\ast)+}\bar{K}^{0}$, $D^{+}畏$, and $D^{+}K^{0}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Kumar%2C+M">M. Kumar</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Lalwani%2C+K">K. Lalwani</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bonvicini%2C+G">G. Bonvicini</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=Campajola%2C+M">M. Campajola</a> , et al. (174 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="2208.14218v2-abstract-short" style="display: inline;"> We present a study of rare decay modes $B^{+} \to D_{s}^{+}h^{0}$, $B^{+} \to D_{s}^{\ast+}h^{0}$, and $B^{+} \to D^{+}h^{0}$, where $h^{0}$ denotes the neutral mesons $畏$ or $K^{0}$, using a data sample of $(772 \pm 10 ) \times 10^{6}$ $B\bar{B}$ events produced at the $违(4S)$ resonance. The data were collected by the Belle detector operating at the asymmetric-energy KEKB collider. We observe no… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.14218v2-abstract-full').style.display = 'inline'; document.getElementById('2208.14218v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.14218v2-abstract-full" style="display: none;"> We present a study of rare decay modes $B^{+} \to D_{s}^{+}h^{0}$, $B^{+} \to D_{s}^{\ast+}h^{0}$, and $B^{+} \to D^{+}h^{0}$, where $h^{0}$ denotes the neutral mesons $畏$ or $K^{0}$, using a data sample of $(772 \pm 10 ) \times 10^{6}$ $B\bar{B}$ events produced at the $违(4S)$ resonance. The data were collected by the Belle detector operating at the asymmetric-energy KEKB collider. We observe no evidence for these decays, so we provide upper limits at the 90$\%$ confidence level on the branching fractions of $B^{+} \to D_{s}^{+}h^{0}$, $D_{s}^{\ast+}h^{0}$, and $D^{+}h^{0}$ decay modes. Along with rare decay modes, we report improved measurements of the color-suppressed decay branching fractions $\mathcal{B}(\bar{B}^{0} \to D^{0}畏)$ = (26.6 $\pm$ 1.2 $\pm$ 2.1) $\times$ $10^{-5}$ and $\mathcal{B}(\bar{B}^{0} \to D^{0}\bar{K}^{0})$ = (5.6 $\pm$ 0.5 $\pm$ 0.2) $\times$ $10^{-5}$. The first and second uncertainties are statistical and systematic, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.14218v2-abstract-full').style.display = 'none'; document.getElementById('2208.14218v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint:2022-23, KEK Preprint:2022-31 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.08695">arXiv:2208.08695</a> <span> [<a href="https://arxiv.org/pdf/2208.08695">pdf</a>, <a href="https://arxiv.org/format/2208.08695">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.scib.2023.02.017">10.1016/j.scib.2023.02.017 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for $C\!P$ violation and measurement of branching fractions and decay asymmetry parameters for $螞_c^+\to螞h^+$ and $螞_c^+\to危^{0} h^+$ ($h\!=\!K,\,蟺$) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Li%2C+L+K">L. K. Li</a>, <a href="/search/hep-ex?searchtype=author&query=Shan%2C+W">W. Shan</a>, <a href="/search/hep-ex?searchtype=author&query=Kinoshita%2C+K">K. Kinoshita</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=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=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=Campajola%2C+M">M. Campajola</a> , et al. (165 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="2208.08695v2-abstract-short" style="display: inline;"> We report a study of $螞_c^+\to螞h^+$ and $螞_c^+\to危^{0} h^+$ ($h\!=\!K,\,蟺$) decays based on a data sample of 980~${\rm fb}^{-1}$ collected with the Belle detector at the KEKB energy-asymmetric $e^+e^-$ collider. The first results of direct $C\!P$ asymmetry in two-body singly Cabibbo-suppressed (SCS) decays of charmed baryons are measured,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.08695v2-abstract-full').style.display = 'inline'; document.getElementById('2208.08695v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.08695v2-abstract-full" style="display: none;"> We report a study of $螞_c^+\to螞h^+$ and $螞_c^+\to危^{0} h^+$ ($h\!=\!K,\,蟺$) decays based on a data sample of 980~${\rm fb}^{-1}$ collected with the Belle detector at the KEKB energy-asymmetric $e^+e^-$ collider. The first results of direct $C\!P$ asymmetry in two-body singly Cabibbo-suppressed (SCS) decays of charmed baryons are measured, $A_{C\!P}^{\rm{dir}}(螞_c^+\to螞K^+)\!=\!+0.021\pm0.026\pm0.001$ and $A_{C\!P}^{\rm{dir}}(螞_c^+\to危^0K^+)\!=\!+0.025\pm0.054\pm0.004$. We also make the most precise measurement of the decay asymmetry parameters ($伪$) for the four modes of interest and search for $C\!P$ violation via the $伪$-induced $C\!P$ asymmetry ($A_{C\!P}^伪$). We measure $A_{C\!P}^伪(螞_c^+\to螞K^+)\!=\!{-0.023\pm0.086\pm0.071}$ and $A_{C\!P}^伪(螞_c^+\to危^0K^+)\!=\!{+0.08\pm 0.35\pm 0.14}$, which are the first $A_{C\!P}^伪$ results for SCS decays of charmed baryons. We search for $螞$-hyperon $C\!P$ violation in $螞_c^+\to(螞,\,危^0)蟺^+$ and find $A_{C\!P}^伪(螞\to p蟺^{-})\!=\!{+0.013\pm0.007\pm0.011}$. This is the first time that hyperon $C\!P$ violation has been measured via Cabibbo-favored charm decays. No evidence of baryon $C\!P$ violation is found. We also obtain the most precise branching fractions for two SCS $螞_c^+$ decays, $\mathcal{B}(螞_c^+\to螞K^+)\!=\!(6.57\pm0.17\pm0.11\pm0.35)\times10^{-4}$ and $\mathcal{B}(螞_c^+\to危^0K^+)\!=\!(3.58\pm0.19\pm0.06\pm0.19)\times10^{-4}$. The first uncertainties are statistical and the second systematic, while the third uncertainties come from the uncertainties on the world average branching fractions of $螞_c^+\to(螞,\,危^0)蟺^+$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.08695v2-abstract-full').style.display = 'none'; document.getElementById('2208.08695v2-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, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 9 figures, accepted for publication as an article in the Science Bulletin</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2022-17, KEK Preprint 2022-22, UCHEP-22-04 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Science Bulletin 68 (2023) 583 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.04477">arXiv:2208.04477</a> <span> [<a href="https://arxiv.org/pdf/2208.04477">pdf</a>, <a href="https://arxiv.org/format/2208.04477">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 two-photon decay width of $蠂_{c2}(1P)$ in $ 纬纬\rightarrow 蠂_{c2}(1P) \rightarrow J/蠄纬$ at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=The+Belle+Collaboration"> The Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Seino%2C+Y">Y. Seino</a>, <a href="/search/hep-ex?searchtype=author&query=Hayasaka%2C+K">K. Hayasaka</a>, <a href="/search/hep-ex?searchtype=author&query=Uehara%2C+S">S. Uehara</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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+T">T. Aushev</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=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bonvicini%2C+G">G. Bonvicini</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a> , et al. (172 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="2208.04477v4-abstract-short" style="display: inline;"> We report the measurement of the two-photon decay width of $蠂_{c2}(1P)$ in two-photon processes at the Belle experiment. We analyze the process $ 纬纬\rightarrow 蠂_{c2}(1P) \rightarrow J/蠄纬$, $J/蠄\rightarrow \ell^{+} \ell^{-}$ $(\ell = e \ {\rm or} \ 渭)$ using a data sample of 971 fb$^{-1}$ collected with the Belle detector at the KEKB $e^{+} e^{-}$ collider. In this analysis, the product of the two… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.04477v4-abstract-full').style.display = 'inline'; document.getElementById('2208.04477v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.04477v4-abstract-full" style="display: none;"> We report the measurement of the two-photon decay width of $蠂_{c2}(1P)$ in two-photon processes at the Belle experiment. We analyze the process $ 纬纬\rightarrow 蠂_{c2}(1P) \rightarrow J/蠄纬$, $J/蠄\rightarrow \ell^{+} \ell^{-}$ $(\ell = e \ {\rm or} \ 渭)$ using a data sample of 971 fb$^{-1}$ collected with the Belle detector at the KEKB $e^{+} e^{-}$ collider. In this analysis, the product of the two-photon decay width of $蠂_{c2}(1P)$ and the branching fraction is determined to be $螕_{纬纬}(蠂_{c2}(1P)) \mathcal{B}( 蠂_{c2}(1P) \rightarrow J/蠄\, 纬)\mathcal{B}( J/蠄\rightarrow \ell^+\ell^- ) = {\rm 14.8}$ $\pm$ ${\rm 0.3}({\rm stat.})$ $\pm$ ${\rm 0.7}({\rm syst.})$ eV, which corresponds to $ 螕_{纬纬}(蠂_{c2}(1P)) $ = 653 $\pm$ 13(stat.) $\pm$ 31(syst.) $\pm$ 17(B.R.) eV, where the third uncertainty is from $\mathcal{B}( 蠂_{c2}(1P) \rightarrow J/蠄\, 纬)$ and $\mathcal{B}( J/蠄\rightarrow \ell^+\ell^- )$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.04477v4-abstract-full').style.display = 'none'; document.getElementById('2208.04477v4-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 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.03554">arXiv:2208.03554</a> <span> [<a href="https://arxiv.org/pdf/2208.03554">pdf</a>, <a href="https://arxiv.org/format/2208.03554">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 and Longitudinal Polarization in $B^0 \to 蟻^+ 蟻^-$ 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Aziz%2C+T">T. Aziz</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=Baehr%2C+S">S. Baehr</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bakich%2C+A+M">A. M. Bakich</a> , et al. (564 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="2208.03554v1-abstract-short" style="display: inline;"> We present a measurement of the branching fraction and longitudinal polarization of $B^0 \to 蟻^+ 蟻^-$ decays. SuperKEKB electron-positron collision data corresponding to 189~fb$^{-1}$ of integrated luminosity and containing $198 \times 10^6 B\bar{B}$ pairs collected with the Belle II detector are used. We obtain \begin{eqnarray*} \mathcal{B}(B^0\to蟻^+蟻^-) &=& [2.67\pm0.28\,(\mathrm{stat})\,\pm0.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.03554v1-abstract-full').style.display = 'inline'; document.getElementById('2208.03554v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.03554v1-abstract-full" style="display: none;"> We present a measurement of the branching fraction and longitudinal polarization of $B^0 \to 蟻^+ 蟻^-$ decays. SuperKEKB electron-positron collision data corresponding to 189~fb$^{-1}$ of integrated luminosity and containing $198 \times 10^6 B\bar{B}$ pairs collected with the Belle II detector are used. We obtain \begin{eqnarray*} \mathcal{B}(B^0\to蟻^+蟻^-) &=& [2.67\pm0.28\,(\mathrm{stat})\,\pm0.28\,(\mathrm{syst})] \times 10^{-5}, \end{eqnarray*} \begin{eqnarray*} f_L &=& 0.956\pm0.035\,(\mathrm{stat})\,\pm 0.033\,(\mathrm{syst}), \end{eqnarray*} These results are consistent with previous measurements and can be used to constrain penguin pollution and to extract the quark-mixing angle $蠁_2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.03554v1-abstract-full').style.display = 'none'; document.getElementById('2208.03554v1-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 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.11275">arXiv:2207.11275</a> <span> [<a href="https://arxiv.org/pdf/2207.11275">pdf</a>, <a href="https://arxiv.org/format/2207.11275">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurements of the branching fraction, isospin asymmetry, and lepton-universality ratio in $B \to J/蠄K$ 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Adak%2C+R">R. Adak</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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Aziz%2C+T">T. Aziz</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bacher%2C+S">S. Bacher</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baehr%2C+S">S. Baehr</a> , et al. (570 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="2207.11275v1-abstract-short" style="display: inline;"> We report a study of $B \to J/蠄(\ell^{+}\ell^{-})K$ decays, where $\ell$ represents an electron or a muon, using $e^{+}e^{-}$ collisions at the $违(4S)$ resonance. The data were collected by the Belle II experiment at the SuperKEKB asymmetric-energy collider during 2019-2021, corresponding to an integrated luminosity of $189$ fb$^{-1}$. The measured quantities are the branching fractions (… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.11275v1-abstract-full').style.display = 'inline'; document.getElementById('2207.11275v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.11275v1-abstract-full" style="display: none;"> We report a study of $B \to J/蠄(\ell^{+}\ell^{-})K$ decays, where $\ell$ represents an electron or a muon, using $e^{+}e^{-}$ collisions at the $违(4S)$ resonance. The data were collected by the Belle II experiment at the SuperKEKB asymmetric-energy collider during 2019-2021, corresponding to an integrated luminosity of $189$ fb$^{-1}$. The measured quantities are the branching fractions (${\mathcal B}$) of the decay channels $B^{+} \to J/蠄(e^{+}e^{-})K^{+}$, $B^{+} \to J/蠄(渭^{+}渭^{-}) K^{+}$, $B^{0} \to J/蠄(e^{+}e^{-}) K^{0}_{S}$, and $B^{0} \to J/蠄(渭^{+}渭^{-})K^{0}_{S}$; the lepton-flavor-dependent isospin asymmetries for the electron [$A_{I}\left(B \to J/蠄(e^{+}e^{-}) K\right)$] and muon [$A_{I}\left(B \to J/蠄(渭^{+} 渭^{-}) K\right)$] channels; and the ratios of branching fractions between the muon and electron channels for the charged [$R_{K^{+}}\left(J/蠄\right)$] and neutral kaon [$R_{K^{0}}\left(J/蠄\right)$] case. The measurements are consistent with the world-average values. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.11275v1-abstract-full').style.display = 'none'; document.getElementById('2207.11275v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.07476">arXiv:2207.07476</a> <span> [<a href="https://arxiv.org/pdf/2207.07476">pdf</a>, <a href="https://arxiv.org/format/2207.07476">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.109.032002">10.1103/PhysRevD.109.032002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for a dark leptophilic scalar produced in association with $蟿^+蟿^-$ pair in $e^+e^-$ annihilation at center-of-mass energies near 10.58 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Sw. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=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=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=Campajola%2C+M">M. Campajola</a>, <a href="/search/hep-ex?searchtype=author&query=%C4%8Cervenkov%2C+D">D. 膶ervenkov</a>, <a href="/search/hep-ex?searchtype=author&query=Chang%2C+M+-">M. -C. Chang</a> , et al. (155 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="2207.07476v3-abstract-short" style="display: inline;"> A dark leptophilic scalar $(蠁_L)$ is a hypothetical particle that couples only to leptons rather than quarks. We report on a search for $蠁_L$ in the $e^+e^- \to 蟿^+ 蟿^- 蠁_L, ~蠁_L \to \ell^+ \ell^- ~(\ell = e, 渭)$ process using 626~\invfb of data collected by the Belle experiment near the \Y4S resonance. We validate the backgrounds with multiple control regions in data, using a novel multiclass mul… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.07476v3-abstract-full').style.display = 'inline'; document.getElementById('2207.07476v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.07476v3-abstract-full" style="display: none;"> A dark leptophilic scalar $(蠁_L)$ is a hypothetical particle that couples only to leptons rather than quarks. We report on a search for $蠁_L$ in the $e^+e^- \to 蟿^+ 蟿^- 蠁_L, ~蠁_L \to \ell^+ \ell^- ~(\ell = e, 渭)$ process using 626~\invfb of data collected by the Belle experiment near the \Y4S resonance. We validate the backgrounds with multiple control regions in data, using a novel multiclass multivariate event classifier. In absence of a signal, we quote upper limits at the 90\% confidence level on the coupling between $蠁_L$ and leptons. Our bounds, obtained in a blinded approach, are 19\% more constraining than the previous limits, averaged over the mass range $0.04 \leq m_{蠁_L} \leq 6.5~\gev$. We exclude the parameter space below 4~\gev favored by measurement of the anomalous magnetic moment of the muon. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.07476v3-abstract-full').style.display = 'none'; document.getElementById('2207.07476v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 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-CONF-2201, Belle Preprint 2023-13, KEK Preprint 2023-17 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 032002 (Published 5 February 2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.06307">arXiv:2207.06307</a> <span> [<a href="https://arxiv.org/pdf/2207.06307">pdf</a>, <a href="https://arxiv.org/format/2207.06307">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"> Snowmass White Paper: Belle II physics reach and plans for the next decade and beyond </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aggarwal%2C+L">Latika Aggarwal</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+S">Swagato Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Bansal%2C+S">Sunil Bansal</a>, <a href="/search/hep-ex?searchtype=author&query=Bernlochner%2C+F">Florian Bernlochner</a>, <a href="/search/hep-ex?searchtype=author&query=Bertemes%2C+M">Michel Bertemes</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">Vishal Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+A">Alexander Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">Thomas E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Cao%2C+L">Lu Cao</a>, <a href="/search/hep-ex?searchtype=author&query=Campajola%2C+M">Marcello Campajola</a>, <a href="/search/hep-ex?searchtype=author&query=Casarosa%2C+G">Giulia Casarosa</a>, <a href="/search/hep-ex?searchtype=author&query=Cecchi%2C+C">Claudia Cecchi</a>, <a href="/search/hep-ex?searchtype=author&query=Cheaib%2C+R">Racha Cheaib</a>, <a href="/search/hep-ex?searchtype=author&query=De+Pietro%2C+G">Giacomo De Pietro</a>, <a href="/search/hep-ex?searchtype=author&query=Di+Canto%2C+A">Angelo Di Canto</a>, <a href="/search/hep-ex?searchtype=author&query=Dorigo%2C+M">Mirco Dorigo</a>, <a href="/search/hep-ex?searchtype=author&query=Feichtinger%2C+P">Paul Feichtinger</a>, <a href="/search/hep-ex?searchtype=author&query=Ferber%2C+T">Torben Ferber</a>, <a href="/search/hep-ex?searchtype=author&query=Fulsom%2C+B">Bryan Fulsom</a>, <a href="/search/hep-ex?searchtype=author&query=Garc%C3%ADa%2C+M">Marcela Garc铆a</a>, <a href="/search/hep-ex?searchtype=author&query=Gaudino%2C+G">Giovanni Gaudino</a>, <a href="/search/hep-ex?searchtype=author&query=Gaz%2C+A">Alessandro Gaz</a>, <a href="/search/hep-ex?searchtype=author&query=Glazov%2C+A">Alexander Glazov</a>, <a href="/search/hep-ex?searchtype=author&query=Granderath%2C+S">Svenja Granderath</a>, <a href="/search/hep-ex?searchtype=author&query=Graziani%2C+E">Enrico Graziani</a> , et al. (52 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="2207.06307v2-abstract-short" style="display: inline;"> Belle II is an experiment operating at the intensity frontier. Over the next decades, it will record the decay of billions of bottom mesons, charm hadrons, and tau leptons produced in 10 GeV electron-positron collisions at the SuperKEKB high-luminosity collider at KEK. These data, collected in low-background and kinematically known conditions, will allow us to measure hundreds of parameters that t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.06307v2-abstract-full').style.display = 'inline'; document.getElementById('2207.06307v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.06307v2-abstract-full" style="display: none;"> Belle II is an experiment operating at the intensity frontier. Over the next decades, it will record the decay of billions of bottom mesons, charm hadrons, and tau leptons produced in 10 GeV electron-positron collisions at the SuperKEKB high-luminosity collider at KEK. These data, collected in low-background and kinematically known conditions, will allow us to measure hundreds of parameters that test the standard model (SM) and probe for the existence of new particles, at mass scales orders of magnitudes higher than those studied at the energy frontier. We project our sensitivities for measurements that are of primary relevance and where Belle II will be unique or world leading for data corresponding to 1 to 50 ab$^{-1}$. Belle II will uniquely probe non-SM contributions in sensitive $b \to q\bar q s$ decays and charmless $b \to q\bar q d(u)$ decays, semileptonic $b \to s 谓\bar谓$ and $s 蟿^+ 蟿^-$ decays, fully leptonic $b \to \ell 谓$ decays, and select $c \to u$ processes. Belle II will lead exploration of non-SM physics in $b \to c 蟿谓$ and $b \to s 纬$ decays and will most precisely determine the quark-mixing parameters $|V_{ub}|$ and $|V_{cb}|$. Belle II will measure many parameters in $蟿$ physics to precisions that will be world leading for the foreseeable future, including the electric and magnetic dipole moments, branching fractions for charged-lepton-flavor-violating decays, and quantities that test lepton-flavor universality. Belle II will perform unique searches for dark-sector particles with masses in the MeV-GeV range. We will also pursue a broad spectroscopy program for conventional and multiquark $c \bar c$ and $b \bar b$ states and provide essential inputs to sharpen the interpretation of muon magnetic-anomaly results. Our exploration of uncharted regions of non-SM parameter space with high precision will reveal non-SM particles or set stringent constraints on their existence, guiding future endeavors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.06307v2-abstract-full').style.display = 'none'; document.getElementById('2207.06307v2-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 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">49 pages, 15 figures. Submitted to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.01194">arXiv:2207.01194</a> <span> [<a href="https://arxiv.org/pdf/2207.01194">pdf</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.107.L031102">10.1103/PhysRevD.107.L031102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $B^+/B^0$ production ratio in $e^+e^-$ collisions at the $违(4S)$ resonance using $B \rightarrow J/蠄(\ell\ell) K$ decays at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Choudhury%2C+S">S. Choudhury</a>, <a href="/search/hep-ex?searchtype=author&query=Sandilya%2C+S">S. Sandilya</a>, <a href="/search/hep-ex?searchtype=author&query=Trabelsi%2C+K">K. Trabelsi</a>, <a href="/search/hep-ex?searchtype=author&query=Giri%2C+A">A. Giri</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=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=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bonvicini%2C+G">G. Bonvicini</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a> , et al. (175 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="2207.01194v4-abstract-short" style="display: inline;"> We measure the ratio of branching fractions for the $违(4S)$ decays to $B^+B^-$ and $B^0\bar{B}{}^0$ using $B^+ \rightarrow J/蠄(\ell\ell) K^+$ and $B^0 \rightarrow J/蠄(\ell\ell) K^0$ samples, where $J/蠄(\ell\ell)$ stands for $J/蠄\to \ell^+\ell^-$ ($\ell = e$ or $渭$), with $711$ fb$^{-1}$ of data collected at the $违(4S)$ resonance with the Belle detector. We find the decay rate ratio of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.01194v4-abstract-full').style.display = 'inline'; document.getElementById('2207.01194v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.01194v4-abstract-full" style="display: none;"> We measure the ratio of branching fractions for the $违(4S)$ decays to $B^+B^-$ and $B^0\bar{B}{}^0$ using $B^+ \rightarrow J/蠄(\ell\ell) K^+$ and $B^0 \rightarrow J/蠄(\ell\ell) K^0$ samples, where $J/蠄(\ell\ell)$ stands for $J/蠄\to \ell^+\ell^-$ ($\ell = e$ or $渭$), with $711$ fb$^{-1}$ of data collected at the $违(4S)$ resonance with the Belle detector. We find the decay rate ratio of $违(4S) \rightarrow B^+B^-$ over $违(4S) \rightarrow B^0\bar{B}{}^0$ to be $1.065\pm0.012\pm 0.019 \pm 0.047$, which is the most precise measurement to date. The first and second uncertainties are statistical and systematic, respectively, and the third uncertainty is systematic due to the assumption of isospin symmetry in $B \to J/蠄(\ell\ell) K$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.01194v4-abstract-full').style.display = 'none'; document.getElementById('2207.01194v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 1 figure</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint: 2022-15, KEK Preprint: 2022-15 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.00134">arXiv:2207.00134</a> <span> [<a href="https://arxiv.org/pdf/2207.00134">pdf</a>, <a href="https://arxiv.org/format/2207.00134">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurements of the branching fractions $\mathcal{B} (\bar{B}{}^0 \to D^{*+} 蟺^-)$ and $\mathcal{B} (\bar{B}{}^0 \to D^{*+} K^-)$ and tests of QCD factorization </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Krohn%2C+J+F">J. F. Krohn</a>, <a href="/search/hep-ex?searchtype=author&query=Ferlewicz%2C+D">D. Ferlewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Urquijo%2C+P">P. Urquijo</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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+T">T. Aushev</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=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bonvicini%2C+G">G. Bonvicini</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a> , et al. (176 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="2207.00134v2-abstract-short" style="display: inline;"> Using $(771.6 \pm 10.6) \times 10^6$ $B\bar{B}$ meson pairs recorded by the Belle experiment at the KEKB $e^+ e^-$ collider, we report the branching fractions $\mathcal{B}(\bar{B}^0 \to D^{*+} 蟺^-) = (2.62 \pm 0.02 \pm 0.09)\times 10^{-3}$ and $\mathcal{B}(\bar{B}^0 \to D^{*+} K^-) = (2.22 \pm 0.06 \pm 0.08)\times 10^{-4}$; the quoted uncertainties are statistical and systematic, respectively. A m… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.00134v2-abstract-full').style.display = 'inline'; document.getElementById('2207.00134v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.00134v2-abstract-full" style="display: none;"> Using $(771.6 \pm 10.6) \times 10^6$ $B\bar{B}$ meson pairs recorded by the Belle experiment at the KEKB $e^+ e^-$ collider, we report the branching fractions $\mathcal{B}(\bar{B}^0 \to D^{*+} 蟺^-) = (2.62 \pm 0.02 \pm 0.09)\times 10^{-3}$ and $\mathcal{B}(\bar{B}^0 \to D^{*+} K^-) = (2.22 \pm 0.06 \pm 0.08)\times 10^{-4}$; the quoted uncertainties are statistical and systematic, respectively. A measurement of the ratio of these branching fractions is also presented, $\mathcal{R}_{K/蟺}=\mathcal{B}(\bar{B} \to D^{*+}K^-) /\mathcal{B}( \bar{B} \to D^{*+}蟺^-) = (8.41 \pm 0.24 \pm 0.13)\times 10^{-2}$, where systematic uncertainties due to the $D^{*+}$ meson reconstruction cancel out. Furthermore, we report a new QCD factorization test based on the measured ratios for $\bar{B} \to D^{*+}h^-$ and $\bar{B} \to D^{*+}\ell^-谓$ decays at squared momentum transfer values equivalent to the mass of the $h = 蟺$ or $K$ hadron. The parameters $|a_1(h)|$ are measured to be $|a_1(蟺)|= 0.884 \pm 0.004 \pm 0.003 \pm 0.016$ and $|a_1(K)|=0.913 \pm 0.019 \pm 0.008 \pm 0.013$, where the last uncertainties account for all external inputs. These values are approximately $15\%$ lower than those expected from theoretical predictions. Subsequently, flavor $SU(3)$ symmetry is tested by measuring the ratios for pions and kaons, $|a_1(K)|^2/ |a_1(蟺)|^2=1.066 \pm 0.042 \pm 0.018 \pm 0.023$, as well as for different particle species. The ratio is consistent with unity and therefore no evidence for $SU(3)$ symmetry breaking effects is found at the $5\%$ precision level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.00134v2-abstract-full').style.display = 'none'; document.getElementById('2207.00134v2-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 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint: 2022-10; KEK Preprint: 2022-01 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.15227">arXiv:2206.15227</a> <span> [<a href="https://arxiv.org/pdf/2206.15227">pdf</a>, <a href="https://arxiv.org/ps/2206.15227">ps</a>, <a href="https://arxiv.org/format/2206.15227">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.130.071802">10.1103/PhysRevLett.130.071802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $螞_c^+$ lifetime </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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=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=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=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=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>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bernieri%2C+E">E. Bernieri</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="2206.15227v3-abstract-short" style="display: inline;"> An absolute measurement of the $螞^{+}_c$ lifetime is reported using $螞_c^+\rightarrow pK^-蟺^+$ decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the $违(4S)$ resonance, is $207.2~\mbox{fb}^{-1}$. The… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.15227v3-abstract-full').style.display = 'inline'; document.getElementById('2206.15227v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.15227v3-abstract-full" style="display: none;"> An absolute measurement of the $螞^{+}_c$ lifetime is reported using $螞_c^+\rightarrow pK^-蟺^+$ decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the $违(4S)$ resonance, is $207.2~\mbox{fb}^{-1}$. The result, $蟿(螞^{+}_c) = 203.20 \pm 0.89 \,\mathrm{(stat)} \pm 0.77 \,\mathrm{(syst)}$ fs, is the most precise measurement to date and is consistent with previous determinations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.15227v3-abstract-full').style.display = 'none'; document.getElementById('2206.15227v3-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, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for publication in PRL</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle II Preprint 2022-003, KEK Preprint 2022-13 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 130, 071802 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.12517">arXiv:2206.12517</a> <span> [<a href="https://arxiv.org/pdf/2206.12517">pdf</a>, <a href="https://arxiv.org/ps/2206.12517">ps</a>, <a href="https://arxiv.org/format/2206.12517">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.107.032001">10.1103/PhysRevD.107.032001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First search for the weak radiative decays $螞_c^+ \to 危^+ 纬$ and $螢_c^0 \to 螢^0 纬$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Li%2C+Y">Y. Li</a>, <a href="/search/hep-ex?searchtype=author&query=Shen%2C+C+P">C. P. Shen</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bonvicini%2C+G">G. Bonvicini</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a>, <a href="/search/hep-ex?searchtype=author&query=Branchini%2C+P">P. Branchini</a>, <a href="/search/hep-ex?searchtype=author&query=Browder%2C+T+E">T. E. Browder</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a> , et al. (165 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.12517v3-abstract-short" style="display: inline;"> We present the first search for the weak radiative decays $螞_c^+ \to 危^+ 纬$ and $螢_c^0 \to 螢^0 纬$ using a data sample of 980~fb$^{-1}$ collected by the Belle detector operating at the KEKB asymmetric-energy $e^+e^-$ collider. There are no evident $螞_c^+ \to 危^+ 纬$ or $螢_c^0 \to 螢^0 纬$ signals. Taking the decays $螞_c^+ \to p K^- 蟺^+$ and $螢_c^0 \to 螢^- 蟺^+$ as normalization channels, the upper limi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.12517v3-abstract-full').style.display = 'inline'; document.getElementById('2206.12517v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.12517v3-abstract-full" style="display: none;"> We present the first search for the weak radiative decays $螞_c^+ \to 危^+ 纬$ and $螢_c^0 \to 螢^0 纬$ using a data sample of 980~fb$^{-1}$ collected by the Belle detector operating at the KEKB asymmetric-energy $e^+e^-$ collider. There are no evident $螞_c^+ \to 危^+ 纬$ or $螢_c^0 \to 螢^0 纬$ signals. Taking the decays $螞_c^+ \to p K^- 蟺^+$ and $螢_c^0 \to 螢^- 蟺^+$ as normalization channels, the upper limits at 90\% credibility level on the ratios of branching fractions ${\cal B}(螞_c^+ \to 危^+ 纬)/{\cal B}(螞_c^+ \to p K^{-} 蟺^+) < 4.0 \times 10^{-3}$ and ${\cal B}(螢_c^0 \to 螢^0 纬)/{\cal B}(螢_c^0 \to 螢^- 蟺^+) < 1.2 \times 10^{-2}$ are determined. We obtain the upper limits at 90\% credibility level on the absolute branching fractions ${\cal B}(螞_c^+ \to 危^+ 纬) < 2.6 \times 10^{-4}$ and ${\cal B}(螢_c^0 \to 螢^0 纬) < 1.8 \times 10^{-4}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.12517v3-abstract-full').style.display = 'none'; document.getElementById('2206.12517v3-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 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 6 pages; accepted for publication as a Regular Article in Physical Review D</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Belle Preprint 2022-12; KEK Preprint 2022-11 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 107, 032001 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.12362">arXiv:2206.12362</a> <span> [<a href="https://arxiv.org/pdf/2206.12362">pdf</a>, <a href="https://arxiv.org/format/2206.12362">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"> Angular analysis of $B^+ \to 蟻^+蟻^0$ decays reconstructed in 2019, 2020, and 2021 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=Abudin%C3%A9n%2C+F">F. Abudin茅n</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=Ahlburg%2C+P">P. Ahlburg</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=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andricek%2C+L">L. Andricek</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=Aulchenko%2C+V">V. Aulchenko</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=Aziz%2C+T">T. Aziz</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+V">V. Babu</a>, <a href="/search/hep-ex?searchtype=author&query=Bacher%2C+S">S. Bacher</a>, <a href="/search/hep-ex?searchtype=author&query=Bae%2C+H">H. Bae</a>, <a href="/search/hep-ex?searchtype=author&query=Baehr%2C+S">S. Baehr</a>, <a href="/search/hep-ex?searchtype=author&query=Bahinipati%2C+S">S. Bahinipati</a> , et al. (570 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.12362v1-abstract-short" style="display: inline;"> We report on a Belle II measurement of the branching fraction ($\mathcal{B}$), longitudinal polarization fraction ($f_L$), and CP asymmetry ($\mathcal{A}_{CP}$) of $B^+\to 蟻^+蟻^0$ decays. We reconstruct $B^+\to 蟻^+(\to 蟺^+蟺^0(\to 纬纬))蟻^0(\to 蟺^+蟺^-)$ decays in a sample of SuperKEKB electron-positron collisions collected by the Belle II experiment in 2019, 2020, and 2021 at the $违$(4S) resonance an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.12362v1-abstract-full').style.display = 'inline'; document.getElementById('2206.12362v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.12362v1-abstract-full" style="display: none;"> We report on a Belle II measurement of the branching fraction ($\mathcal{B}$), longitudinal polarization fraction ($f_L$), and CP asymmetry ($\mathcal{A}_{CP}$) of $B^+\to 蟻^+蟻^0$ decays. We reconstruct $B^+\to 蟻^+(\to 蟺^+蟺^0(\to 纬纬))蟻^0(\to 蟺^+蟺^-)$ decays in a sample of SuperKEKB electron-positron collisions collected by the Belle II experiment in 2019, 2020, and 2021 at the $违$(4S) resonance and corresponding to 190 fb$^{-1}$ of integrated luminosity. We fit the distributions of the difference between expected and observed $B$ candidate energy, continuum-suppression discriminant, dipion masses, and decay angles of the selected samples, to determine a signal yield of $345 \pm 31$ events. The signal yields are corrected for efficiencies determined from simulation and control data samples to obtain $\mathcal{B}(B^+ \to 蟻^+蟻^0) = [23.2^{+\ 2.2}_{-\ 2.1} (\rm stat) \pm 2.7 (\rm syst)]\times 10^{-6}$, $f_L = 0.943 ^{+\ 0.035}_{-\ 0.033} (\rm stat)\pm 0.027(\rm syst)$, and $\mathcal{A}_{CP}=-0.069 \pm 0.068(\rm stat) \pm 0.060 (\rm syst)$. The results agree with previous measurements. This is the first measurement of $\mathcal{A}_{CP}$ in $B^+\to 蟻^+蟻^0$ decays reported by Belle II. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.12362v1-abstract-full').style.display = 'none'; document.getElementById('2206.12362v1-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 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BELLE2-CONF-PH-2022-005 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.11445">arXiv:2206.11445</a> <span> [<a href="https://arxiv.org/pdf/2206.11445">pdf</a>, <a href="https://arxiv.org/format/2206.11445">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.107.032013">10.1103/PhysRevD.107.032013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Angular analysis of the low $K^{+}K^{-}$ invariant mass enhancement in $B^{+}\to K^{+}K^{-}蟺^{+}$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Hsu%2C+C+-">C. -L. Hsu</a>, <a href="/search/hep-ex?searchtype=author&query=Sevior%2C+M+E">M. E. Sevior</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</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=Bahinipati%2C+S">S. Bahinipati</a>, <a href="/search/hep-ex?searchtype=author&query=Bauer%2C+M">M. Bauer</a>, <a href="/search/hep-ex?searchtype=author&query=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Biswal%2C+J">J. Biswal</a>, <a href="/search/hep-ex?searchtype=author&query=Bloomfield%2C+T">T. Bloomfield</a>, <a href="/search/hep-ex?searchtype=author&query=Bobrov%2C+A">A. Bobrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a> , et al. (180 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.11445v2-abstract-short" style="display: inline;"> We study the decay $B^{+} \to K^+ K^- 蟺^+$ and investigate the angular distribution of $K^{+}K^{-}$ pairs with invariant mass below $1.1$ GeV/$c^2$. This region exhibits both a strong enhancement in signal and very large direct $CP$ violation. We construct a coherent sum model for the angular distribution of $S$- and $P$-wave, and report the ratio of their amplitudes, the relative phase and the fo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.11445v2-abstract-full').style.display = 'inline'; document.getElementById('2206.11445v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.11445v2-abstract-full" style="display: none;"> We study the decay $B^{+} \to K^+ K^- 蟺^+$ and investigate the angular distribution of $K^{+}K^{-}$ pairs with invariant mass below $1.1$ GeV/$c^2$. This region exhibits both a strong enhancement in signal and very large direct $CP$ violation. We construct a coherent sum model for the angular distribution of $S$- and $P$-wave, and report the ratio of their amplitudes, the relative phase and the forward-backward asymmetry. We also report absolute differential branching fractions and direct $CP$ asymmetry for the decay in bins of $M_{K^+K^-}$ and the differential branching fractions in bins of $M_{K^+蟺^-}$. The results are based on a data sample that contains $772\times10^6$ $B \bar{B}$ pairs collected at the $违(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The measured overall branching fraction and the direct $CP$ asymmetry are $(5.38\pm0.40\pm0.35)\times 10^{-6}$ and $-0.170\pm0.073\pm0.017$, respectively, where the first uncertainties are statistical and the second are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.11445v2-abstract-full').style.display = 'none'; document.getElementById('2206.11445v2-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 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 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 Preprint: 2022-07; KEK Preprint: 2022-5 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.09440">arXiv:2206.09440</a> <span> [<a href="https://arxiv.org/pdf/2206.09440">pdf</a>, <a href="https://arxiv.org/format/2206.09440">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP03(2023)171">10.1007/JHEP03(2023)171 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Two-particle angular correlations in $e^+ e^-$ collisions to hadronic final states in two reference coordinates at Belle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Belle+Collaboration"> Belle Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+Y+-">Y. -C. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Lee%2C+Y+-">Y. -J. Lee</a>, <a href="/search/hep-ex?searchtype=author&query=Chang%2C+P">P. Chang</a>, <a href="/search/hep-ex?searchtype=author&query=Adachi%2C+I">I. Adachi</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</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=Aulchenko%2C+V">V. Aulchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Aushev%2C+T">T. Aushev</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=Behera%2C+P">P. Behera</a>, <a href="/search/hep-ex?searchtype=author&query=Belous%2C+K">K. Belous</a>, <a href="/search/hep-ex?searchtype=author&query=Bennett%2C+J">J. Bennett</a>, <a href="/search/hep-ex?searchtype=author&query=Bessner%2C+M">M. Bessner</a>, <a href="/search/hep-ex?searchtype=author&query=Bhardwaj%2C+V">V. Bhardwaj</a>, <a href="/search/hep-ex?searchtype=author&query=Bhuyan%2C+B">B. Bhuyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bilka%2C+T">T. Bilka</a>, <a href="/search/hep-ex?searchtype=author&query=Bodrov%2C+D">D. Bodrov</a>, <a href="/search/hep-ex?searchtype=author&query=Bonvicini%2C+G">G. Bonvicini</a>, <a href="/search/hep-ex?searchtype=author&query=Borah%2C+J">J. Borah</a>, <a href="/search/hep-ex?searchtype=author&query=Bozek%2C+A">A. Bozek</a>, <a href="/search/hep-ex?searchtype=author&query=Bra%C4%8Dko%2C+M">M. Bra膷ko</a> , et al. (166 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.09440v4-abstract-short" style="display: inline;"> We present the analysis of two-particle angular correlations using coordinate systems defined with the conventional beam axis and the event thrust axis, and propose the latter to be a useful representation for the correlation structure interpretation in the $e^+ e^-$ collision system. The $e^+ e^-$ collisions to hadronic final states at center-of-mass energies of $\sqrt{s} = 10.52$ GeV and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.09440v4-abstract-full').style.display = 'inline'; document.getElementById('2206.09440v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.09440v4-abstract-full" style="display: none;"> We present the analysis of two-particle angular correlations using coordinate systems defined with the conventional beam axis and the event thrust axis, and propose the latter to be a useful representation for the correlation structure interpretation in the $e^+ e^-$ collision system. The $e^+ e^-$ collisions to hadronic final states at center-of-mass energies of $\sqrt{s} = 10.52$ GeV and $10.58$ GeV are recorded by the Belle detector at KEKB. In this paper, results on the first dataset are supplementary to the previous Belle publication arXiv:2201.01694 while the latter one is the first two-particle correlation measurement at a collision energy on the $违(4S)$ resonance and sensitive to its decay products. Measurements are reported as a function of the charged-particle multiplicity. Finally, a qualitative understanding of the correlation structure is discussed using a combination of Monte Carlo simulations and experimental data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.09440v4-abstract-full').style.display = 'none'; document.getElementById('2206.09440v4-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, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to JHEP. 32 pages, 14 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report 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