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<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title>[2410.13515] Observation of a rare beta decay of the charmed baryon with a Graph Neural Network</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="apple-touch-icon" sizes="180x180" href="/static/browse/0.3.4/images/icons/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="/static/browse/0.3.4/images/icons/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="/static/browse/0.3.4/images/icons/favicon-16x16.png"> <link rel="manifest" href="/static/browse/0.3.4/images/icons/site.webmanifest"> <link rel="mask-icon" href="/static/browse/0.3.4/images/icons/safari-pinned-tab.svg" color="#5bbad5"> <meta name="msapplication-TileColor" content="#da532c"> <meta name="theme-color" content="#ffffff"> <link rel="stylesheet" type="text/css" media="screen" href="/static/browse/0.3.4/css/arXiv.css?v=20240822" /> <link rel="stylesheet" type="text/css" media="print" href="/static/browse/0.3.4/css/arXiv-print.css?v=20200611" /> <link rel="stylesheet" type="text/css" media="screen" href="/static/browse/0.3.4/css/browse_search.css" /> <script language="javascript" src="/static/browse/0.3.4/js/accordion.js" /></script> <link rel="canonical" href="https://arxiv.org/abs/2410.13515"/> <meta name="description" content="Abstract page for arXiv paper 2410.13515: Observation of a rare beta decay of the charmed baryon with a Graph Neural Network"><meta property="og:type" content="website" /> <meta property="og:site_name" content="arXiv.org" /> <meta property="og:title" content="Observation of a rare beta decay of the charmed baryon with a Graph Neural Network" /> <meta property="og:url" content="https://arxiv.org/abs/2410.13515v1" /> <meta property="og:image" content="/static/browse/0.3.4/images/arxiv-logo-fb.png" /> <meta property="og:image:secure_url" content="/static/browse/0.3.4/images/arxiv-logo-fb.png" /> <meta property="og:image:width" content="1200" /> <meta property="og:image:height" content="700" /> <meta property="og:image:alt" content="arXiv logo"/> <meta property="og:description" content="The study of beta decay of the charmed baryon provides unique insights into the fundamental mechanism of the strong and electro-weak interactions. The $螞_c^+$, being the lightest charmed baryon, undergoes disintegration solely through the charm quark weak decay. Its beta decay provides an ideal laboratory for investigating non-perturbative effects in quantum chromodynamics and for constraining the fundamental parameters of the Cabibbo-Kobayashi-Maskawa matrix in weak interaction theory. This article presents the first observation of the Cabibbo-suppressed $螞_c^+$ beta decay into a neutron $螞_c^+ \rightarrow n e^+ 谓_{e}$, based on $4.5~\mathrm{fb}^{-1}$ of electron-positron annihilation data collected with the BESIII detector in the energy region above the $螞^+_c\bar螞^-_c$ threshold. A novel machine learning technique, leveraging Graph Neural Networks, has been utilized to effectively separate signals from dominant backgrounds, particularly $螞_c^+ \rightarrow 螞e^+ 谓_{e}$. This approach has yielded a statistical significance of more than $10蟽$. The absolute branching fraction of $螞_c^+ \rightarrow n e^+ 谓_{e}$ is measured to be $(3.57\pm0.34_{\mathrm{stat}}\pm0.14_{\mathrm{syst}})\times 10^{-3}$. For the first time, the CKM matrix element $\left|V_{cd}\right|$ is extracted via a charmed baryon decay to be $0.208\pm0.011_{\rm exp.}\pm0.007_{\rm LQCD}\pm0.001_{蟿_{螞_c^+}}$. This study provides a new probe to further understand fundamental interactions in the charmed baryon sector, and demonstrates the power of modern machine learning techniques in enhancing experimental capability in high energy physics research."/> <meta name="twitter:site" content="@arxiv"/> <meta name="twitter:card" content="summary"/> <meta name="twitter:title" content="Observation of a rare beta decay of the charmed baryon with a..."/> <meta name="twitter:description" content="The study of beta decay of the charmed baryon provides unique insights into the fundamental mechanism of the strong and electro-weak interactions. The $螞_c^+$, being the lightest charmed..."/> <meta name="twitter:image" content="https://static.arxiv.org/icons/twitter/arxiv-logo-twitter-square.png"/> <meta name="twitter:image:alt" content="arXiv logo"/> <link rel="stylesheet" media="screen" type="text/css" href="/static/browse/0.3.4/css/tooltip.css"/><link rel="stylesheet" media="screen" type="text/css" href="https://static.arxiv.org/js/bibex-dev/bibex.css?20200709"/> <script src="/static/browse/0.3.4/js/mathjaxToggle.min.js" type="text/javascript"></script> <script src="//code.jquery.com/jquery-latest.min.js" type="text/javascript"></script> <script src="//cdn.jsdelivr.net/npm/js-cookie@2/src/js.cookie.min.js" type="text/javascript"></script> <script src="//cdn.jsdelivr.net/npm/dompurify@2.3.5/dist/purify.min.js"></script> <script src="/static/browse/0.3.4/js/toggle-labs.js?20241022" type="text/javascript"></script> <script src="/static/browse/0.3.4/js/cite.js" type="text/javascript"></script><meta name="citation_title" content="Observation of a rare beta decay of the charmed baryon with a Graph Neural Network" /><meta name="citation_author" content="BESIII Collaboration" /><meta name="citation_author" content="Ablikim, M." /><meta name="citation_author" content="Achasov, M. 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B." /><meta name="citation_author" content="Zhao, Y. X." /><meta name="citation_author" content="Zhao, Z. G." /><meta name="citation_author" content="Zhemchugov, A." /><meta name="citation_author" content="Zheng, B." /><meta name="citation_author" content="Zheng, B. M." /><meta name="citation_author" content="Zheng, J. P." /><meta name="citation_author" content="Zheng, W. J." /><meta name="citation_author" content="Zheng, Y. H." /><meta name="citation_author" content="Zhong, B." /><meta name="citation_author" content="Zhong, X." /><meta name="citation_author" content="Zhou, H." /><meta name="citation_author" content="Zhou, J. Y." /><meta name="citation_author" content="Zhou, L. P." /><meta name="citation_author" content="Zhou, S." /><meta name="citation_author" content="Zhou, X." /><meta name="citation_author" content="Zhou, X. K." /><meta name="citation_author" content="Zhou, X. R." /><meta name="citation_author" content="Zhou, X. Y." /><meta name="citation_author" content="Zhou, Y. Z." /><meta name="citation_author" content="Zhu, J." /><meta name="citation_author" content="Zhu, K." /><meta name="citation_author" content="Zhu, K. J." /><meta name="citation_author" content="Zhu, K. S." /><meta name="citation_author" content="Zhu, L." /><meta name="citation_author" content="Zhu, L. X." /><meta name="citation_author" content="Zhu, S. H." /><meta name="citation_author" content="Zhu, S. Q." /><meta name="citation_author" content="Zhu, T. J." /><meta name="citation_author" content="Zhu, W. D." /><meta name="citation_author" content="Zhu, Y. C." /><meta name="citation_author" content="Zhu, Z. A." /><meta name="citation_author" content="Zou, J. H." /><meta name="citation_author" content="Zu, J." /><meta name="citation_date" content="2024/10/17" /><meta name="citation_online_date" content="2024/10/17" /><meta name="citation_pdf_url" content="http://arxiv.org/pdf/2410.13515" /><meta name="citation_arxiv_id" content="2410.13515" /><meta name="citation_abstract" content="The study of beta decay of the charmed baryon provides unique insights into the fundamental mechanism of the strong and electro-weak interactions. The $\Lambda_c^+$, being the lightest charmed baryon, undergoes disintegration solely through the charm quark weak decay. Its beta decay provides an ideal laboratory for investigating non-perturbative effects in quantum chromodynamics and for constraining the fundamental parameters of the Cabibbo-Kobayashi-Maskawa matrix in weak interaction theory. This article presents the first observation of the Cabibbo-suppressed $\Lambda_c^+$ beta decay into a neutron $\Lambda_c^+ \rightarrow n e^+ \nu_{e}$, based on $4.5~\mathrm{fb}^{-1}$ of electron-positron annihilation data collected with the BESIII detector in the energy region above the $\Lambda^+_c\bar{\Lambda}^-_c$ threshold. A novel machine learning technique, leveraging Graph Neural Networks, has been utilized to effectively separate signals from dominant backgrounds, particularly $\Lambda_c^+ \rightarrow \Lambda e^+ \nu_{e}$. This approach has yielded a statistical significance of more than $10\sigma$. The absolute branching fraction of $\Lambda_c^+ \rightarrow n e^+ \nu_{e}$ is measured to be $(3.57\pm0.34_{\mathrm{stat}}\pm0.14_{\mathrm{syst}})\times 10^{-3}$. For the first time, the CKM matrix element $\left|V_{cd}\right|$ is extracted via a charmed baryon decay to be $0.208\pm0.011_{\rm exp.}\pm0.007_{\rm LQCD}\pm0.001_{\tau_{\Lambda_c^+}}$. This study provides a new probe to further understand fundamental interactions in the charmed baryon sector, and demonstrates the power of modern machine learning techniques in enhancing experimental capability in high energy physics research." /> </head> <body class="with-cu-identity"> <div class="flex-wrap-footer"> <header> <a href="#content" class="is-sr-only">Skip to main content</a>  <div class="columns is-vcentered is-hidden-mobile" id="cu-identity"> <div class="column" id="cu-logo"> <a href="https://www.cornell.edu/"><img src="/static/browse/0.3.4/images/icons/cu/cornell-reduced-white-SMALL.svg" alt="Cornell University" /></a> </div><div class="column" id="support-ack"> <span id="support-ack-url">We gratefully acknowledge support from the Simons Foundation, <a href="https://info.arxiv.org/about/ourmembers.html">member institutions</a>, and all contributors.</span> <a href="https://info.arxiv.org/about/donate.html" class="btn-header-donate">Donate</a> </div> </div> <div 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class="descriptor">Authors:</span><a href="https://arxiv.org/search/hep-ex?searchtype=author&query=BESIII+Collaboration" rel="nofollow">BESIII Collaboration</a>: <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ablikim,+M" rel="nofollow">M. Ablikim</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Achasov,+M+N" rel="nofollow">M. N. Achasov</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Adlarson,+P" rel="nofollow">P. Adlarson</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Afedulidis,+O" rel="nofollow">O. Afedulidis</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ai,+X+C" rel="nofollow">X. C. Ai</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Aliberti,+R" rel="nofollow">R. Aliberti</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Amoroso,+A" rel="nofollow">A. Amoroso</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=An,+Q" rel="nofollow">Q. An</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Bai,+Y" rel="nofollow">Y. Bai</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Bakina,+O" rel="nofollow">O. Bakina</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Balossino,+I" rel="nofollow">I. Balossino</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ban,+Y" rel="nofollow">Y. Ban</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Bao,+H" rel="nofollow">H.-R. Bao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Batozskaya,+V" rel="nofollow">V. Batozskaya</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Begzsuren,+K" rel="nofollow">K. Begzsuren</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Berger,+N" rel="nofollow">N. Berger</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Berlowski,+M" rel="nofollow">M. Berlowski</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Bertani,+M" rel="nofollow">M. Bertani</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Bettoni,+D" rel="nofollow">D. Bettoni</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Bianchi,+F" rel="nofollow">F. Bianchi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Bianco,+E" rel="nofollow">E. Bianco</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Bortone,+A" rel="nofollow">A. Bortone</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Boyko,+I" rel="nofollow">I. Boyko</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Briere,+R+A" rel="nofollow">R. A. Briere</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Brueggemann,+A" rel="nofollow">A. Brueggemann</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Cai,+H" rel="nofollow">H. Cai</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Cai,+X" rel="nofollow">X. Cai</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Calcaterra,+A" rel="nofollow">A. Calcaterra</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Cao,+G+F" rel="nofollow">G. F. Cao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Cao,+N" rel="nofollow">N. Cao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Cetin,+S+A" rel="nofollow">S. A. Cetin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chang,+J+F" rel="nofollow">J. F. Chang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Che,+G+R" rel="nofollow">G. R. Che</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chelkov,+G" rel="nofollow">G. Chelkov</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+C" rel="nofollow">C. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+C+H" rel="nofollow">C. H. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+C" rel="nofollow">Chao Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+G" rel="nofollow">G. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+H+S" rel="nofollow">H. S. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+H+Y" rel="nofollow">H. Y. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+M+L" rel="nofollow">M. L. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+S+J" rel="nofollow">S. J. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+S+L" rel="nofollow">S. L. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+S+M" rel="nofollow">S. M. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+T" rel="nofollow">T. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+X+R" rel="nofollow">X. R. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+X+T" rel="nofollow">X. T. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+Y+B" rel="nofollow">Y. B. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+Y+Q" rel="nofollow">Y. Q. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+Z+J" rel="nofollow">Z. J. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Chen,+Z+Y" rel="nofollow">Z. Y. Chen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Choi,+S+K" rel="nofollow">S. K. Choi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Cibinetto,+G" rel="nofollow">G. Cibinetto</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Cossio,+F" rel="nofollow">F. Cossio</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Cui,+J+J" rel="nofollow">J. J. Cui</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Dai,+H+L" rel="nofollow">H. L. Dai</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Dai,+J+P" rel="nofollow">J. P. Dai</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Dbeyssi,+A" rel="nofollow">A. Dbeyssi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=de+Boer,+R+E" rel="nofollow">R. E. de Boer</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Dedovich,+D" rel="nofollow">D. Dedovich</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Deng,+C+Q" rel="nofollow">C. Q. Deng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Deng,+Z+Y" rel="nofollow">Z. Y. Deng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Denig,+A" rel="nofollow">A. Denig</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Denysenko,+I" rel="nofollow">I. Denysenko</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Destefanis,+M" rel="nofollow">M. Destefanis</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=De+Mori,+F" rel="nofollow">F. De Mori</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ding,+B" rel="nofollow">B. Ding</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ding,+X+X" rel="nofollow">X. X. Ding</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ding,+Y" rel="nofollow">Y. Ding</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ding,+Y" rel="nofollow">Y. Ding</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Dong,+J" rel="nofollow">J. Dong</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Dong,+L+Y" rel="nofollow">L. Y. Dong</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Dong,+M+Y" rel="nofollow">M. Y. Dong</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Dong,+X" rel="nofollow">X. Dong</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Du,+M+C" rel="nofollow">M. C. Du</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Du,+S+X" rel="nofollow">S. X. Du</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Duan,+Y+Y" rel="nofollow">Y. Y. Duan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Duan,+Z+H" rel="nofollow">Z. H. Duan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Egorov,+P" rel="nofollow">P. Egorov</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fan,+Y+H" rel="nofollow">Y. H. Fan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fang,+J" rel="nofollow">J. Fang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fang,+J" rel="nofollow">J. Fang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fang,+S+S" rel="nofollow">S. S. Fang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fang,+W+X" rel="nofollow">W. X. Fang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fang,+Y" rel="nofollow">Y. Fang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fang,+Y+Q" rel="nofollow">Y. Q. Fang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Farinelli,+R" rel="nofollow">R. Farinelli</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fava,+L" rel="nofollow">L. Fava</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Feldbauer,+F" rel="nofollow">F. Feldbauer</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Felici,+G" rel="nofollow">G. Felici</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Feng,+C+Q" rel="nofollow">C. Q. Feng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Feng,+J+H" rel="nofollow">J. H. Feng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Feng,+Y+T" rel="nofollow">Y. T. Feng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fritsch,+M" rel="nofollow">M. Fritsch</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fu,+C+D" rel="nofollow">C. D. Fu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fu,+J+L" rel="nofollow">J. L. Fu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Fu,+Y+W" rel="nofollow">Y. W. Fu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gao,+H" rel="nofollow">H. Gao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gao,+X+B" rel="nofollow">X. B. Gao</a> <script type="text/javascript">  </script> <div id="long-author-list" style="display: none;"> , <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gao,+Y+N" rel="nofollow">Y. N. Gao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gao,+Y" rel="nofollow">Yang Gao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Garbolino,+S" rel="nofollow">S. Garbolino</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Garzia,+I" rel="nofollow">I. Garzia</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ge,+L" rel="nofollow">L. Ge</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ge,+P+T" rel="nofollow">P. T. Ge</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ge,+Z+W" rel="nofollow">Z. W. Ge</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Geng,+C" rel="nofollow">C. Geng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gersabeck,+E+M" rel="nofollow">E. M. Gersabeck</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gilman,+A" rel="nofollow">A. Gilman</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Goetzen,+K" rel="nofollow">K. Goetzen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gong,+L" rel="nofollow">L. Gong</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gong,+W+X" rel="nofollow">W. X. Gong</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gradl,+W" rel="nofollow">W. Gradl</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gramigna,+S" rel="nofollow">S. Gramigna</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Greco,+M" rel="nofollow">M. Greco</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gu,+M+H" rel="nofollow">M. H. Gu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gu,+Y+T" rel="nofollow">Y. T. Gu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Guan,+C+Y" rel="nofollow">C. Y. Guan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Guo,+A+Q" rel="nofollow">A. Q. Guo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Guo,+L+B" rel="nofollow">L. B. Guo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Guo,+M+J" rel="nofollow">M. J. Guo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Guo,+R+P" rel="nofollow">R. P. Guo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Guo,+Y+P" rel="nofollow">Y. P. Guo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Guskov,+A" rel="nofollow">A. Guskov</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Gutierrez,+J" rel="nofollow">J. Gutierrez</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Han,+K+L" rel="nofollow">K. L. Han</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Han,+T+T" rel="nofollow">T. T. Han</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hanisch,+F" rel="nofollow">F. Hanisch</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hao,+X+Q" rel="nofollow">X. Q. Hao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Harris,+F+A" rel="nofollow">F. A. Harris</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=He,+K+K" rel="nofollow">K. K. He</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=He,+K+L" rel="nofollow">K. L. He</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Heinsius,+F+H" rel="nofollow">F. H. Heinsius</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Heinz,+C+H" rel="nofollow">C. H. Heinz</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Heng,+Y+K" rel="nofollow">Y. K. Heng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Herold,+C" rel="nofollow">C. Herold</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Holtmann,+T" rel="nofollow">T. Holtmann</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hong,+P+C" rel="nofollow">P. C. Hong</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hou,+G+Y" rel="nofollow">G. Y. Hou</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hou,+X+T" rel="nofollow">X. T. Hou</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hou,+Y+R" rel="nofollow">Y. R. Hou</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hou,+Z+L" rel="nofollow">Z. L. Hou</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hu,+B+Y" rel="nofollow">B. Y. Hu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hu,+H+M" rel="nofollow">H. M. Hu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hu,+J+F" rel="nofollow">J. F. Hu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hu,+S+L" rel="nofollow">S. L. Hu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hu,+T" rel="nofollow">T. Hu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hu,+Y" rel="nofollow">Y. Hu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Huang,+G+S" rel="nofollow">G. S. Huang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Huang,+K+X" rel="nofollow">K. X. Huang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Huang,+L+Q" rel="nofollow">L. Q. Huang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Huang,+X+T" rel="nofollow">X. T. Huang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Huang,+Y+P" rel="nofollow">Y. P. Huang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Hussain,+T" rel="nofollow">T. Hussain</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=H%C3%B6lzken,+F" rel="nofollow">F. H枚lzken</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=H%C3%BCsken,+N" rel="nofollow">N. H眉sken</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=der+Wiesche,+N+i" rel="nofollow">N. in der Wiesche</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jackson,+J" rel="nofollow">J. Jackson</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Janchiv,+S" rel="nofollow">S. Janchiv</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jeong,+J+H" rel="nofollow">J. H. Jeong</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ji,+Q" rel="nofollow">Q. Ji</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ji,+Q+P" rel="nofollow">Q. P. Ji</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ji,+W" rel="nofollow">W. Ji</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ji,+X+B" rel="nofollow">X. B. Ji</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ji,+X+L" rel="nofollow">X. L. Ji</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ji,+Y+Y" rel="nofollow">Y. Y. Ji</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jia,+X+Q" rel="nofollow">X. Q. Jia</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jia,+Z+K" rel="nofollow">Z. K. Jia</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiang,+D" rel="nofollow">D. Jiang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiang,+H+B" rel="nofollow">H. B. Jiang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiang,+P+C" rel="nofollow">P. C. Jiang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiang,+S+S" rel="nofollow">S. S. Jiang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiang,+T+J" rel="nofollow">T. J. Jiang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiang,+X+S" rel="nofollow">X. S. Jiang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiang,+Y" rel="nofollow">Y. Jiang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiao,+J+B" rel="nofollow">J. B. Jiao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiao,+J+K" rel="nofollow">J. K. Jiao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jiao,+Z" rel="nofollow">Z. Jiao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jin,+S" rel="nofollow">S. Jin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jin,+Y" rel="nofollow">Y. Jin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jing,+M+Q" rel="nofollow">M. Q. Jing</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Jing,+X+M" rel="nofollow">X. M. Jing</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Johansson,+T" rel="nofollow">T. Johansson</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kabana,+S" rel="nofollow">S. Kabana</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kalantar-Nayestanaki,+N" rel="nofollow">N. Kalantar-Nayestanaki</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kang,+X+L" rel="nofollow">X. L. Kang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kang,+X+S" rel="nofollow">X. S. Kang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kavatsyuk,+M" rel="nofollow">M. Kavatsyuk</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ke,+B+C" rel="nofollow">B. C. Ke</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Khachatryan,+V" rel="nofollow">V. Khachatryan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Khoukaz,+A" rel="nofollow">A. Khoukaz</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kiuchi,+R" rel="nofollow">R. Kiuchi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kolcu,+O+B" rel="nofollow">O. B. Kolcu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kopf,+B" rel="nofollow">B. Kopf</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kuessner,+M" rel="nofollow">M. Kuessner</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kui,+X" rel="nofollow">X. Kui</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kumar,+N" rel="nofollow">N. Kumar</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Kupsc,+A" rel="nofollow">A. Kupsc</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=K%C3%BChn,+W" rel="nofollow">W. K眉hn</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lane,+J+J" rel="nofollow">J. J. Lane</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Larin,+P" rel="nofollow">P. Larin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lavezzi,+L" rel="nofollow">L. Lavezzi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lei,+T+T" rel="nofollow">T. T. Lei</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lei,+Z+H" rel="nofollow">Z. H. Lei</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lellmann,+M" rel="nofollow">M. Lellmann</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lenz,+T" rel="nofollow">T. Lenz</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+C" rel="nofollow">C. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+C" rel="nofollow">C. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+C+H" rel="nofollow">C. H. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+C" rel="nofollow">Cheng Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+D+M" rel="nofollow">D. M. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+F" rel="nofollow">F. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+G" rel="nofollow">G. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+H+B" rel="nofollow">H. B. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+H+J" rel="nofollow">H. J. 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Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+X+H" rel="nofollow">X. H. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+X+L" rel="nofollow">X. L. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+X+Y" rel="nofollow">X. Y. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+X+Z" rel="nofollow">X. Z. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+Y+G" rel="nofollow">Y. G. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+Z+J" rel="nofollow">Z. J. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Li,+Z+Y" rel="nofollow">Z. Y. Li</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liang,+C" rel="nofollow">C. Liang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liang,+H" rel="nofollow">H. Liang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liang,+H" rel="nofollow">H. Liang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liang,+Y+F" rel="nofollow">Y. F. Liang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liang,+Y+T" rel="nofollow">Y. T. Liang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liao,+G+R" rel="nofollow">G. R. Liao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liao,+L+Z" rel="nofollow">L. Z. Liao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liao,+Y+P" rel="nofollow">Y. P. Liao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Libby,+J" rel="nofollow">J. Libby</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Limphirat,+A" rel="nofollow">A. Limphirat</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lin,+C+C" rel="nofollow">C. C. Lin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lin,+D+X" rel="nofollow">D. X. Lin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lin,+T" rel="nofollow">T. Lin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+B+J" rel="nofollow">B. J. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+B+X" rel="nofollow">B. X. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+C" rel="nofollow">C. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+C+X" rel="nofollow">C. X. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+F" rel="nofollow">F. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+F+H" rel="nofollow">F. H. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+F" rel="nofollow">Feng Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+G+M" rel="nofollow">G. M. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+H" rel="nofollow">H. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+H+B" rel="nofollow">H. B. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+H+H" rel="nofollow">H. H. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+H+M" rel="nofollow">H. M. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+H" rel="nofollow">Huihui Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+J+B" rel="nofollow">J. B. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+J+Y" rel="nofollow">J. Y. 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Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+S+B" rel="nofollow">S. B. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+T" rel="nofollow">T. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+W+K" rel="nofollow">W. K. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+W+M" rel="nofollow">W. M. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+X" rel="nofollow">X. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+X" rel="nofollow">X. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+Y" rel="nofollow">Y. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+Y" rel="nofollow">Y. Liu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Liu,+Y+B" rel="nofollow">Y. B. 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Lu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lu,+Y+P" rel="nofollow">Y. P. Lu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lu,+Z+H" rel="nofollow">Z. H. Lu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Luo,+C+L" rel="nofollow">C. L. Luo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Luo,+J+R" rel="nofollow">J. R. Luo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Luo,+M+X" rel="nofollow">M. X. Luo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Luo,+T" rel="nofollow">T. Luo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Luo,+X+L" rel="nofollow">X. L. Luo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lyu,+X+R" rel="nofollow">X. R. Lyu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Lyu,+Y+F" rel="nofollow">Y. F. Lyu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+F+C" rel="nofollow">F. C. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+H" rel="nofollow">H. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+H+L" rel="nofollow">H. L. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+J+L" rel="nofollow">J. L. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+L+L" rel="nofollow">L. L. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+M+M" rel="nofollow">M. M. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+Q+M" rel="nofollow">Q. M. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+R+Q" rel="nofollow">R. Q. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+T" rel="nofollow">T. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+X+T" rel="nofollow">X. T. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+X+Y" rel="nofollow">X. Y. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+Y" rel="nofollow">Y. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ma,+Y+M" rel="nofollow">Y. M. Ma</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Maas,+F+E" rel="nofollow">F. E. Maas</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Maggiora,+M" rel="nofollow">M. Maggiora</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Malde,+S" rel="nofollow">S. Malde</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Mao,+Y+J" rel="nofollow">Y. J. Mao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Mao,+Z+P" rel="nofollow">Z. P. Mao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Marcello,+S" rel="nofollow">S. Marcello</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Meng,+Z+X" rel="nofollow">Z. X. Meng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Messchendorp,+J+G" rel="nofollow">J. G. Messchendorp</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Mezzadri,+G" rel="nofollow">G. Mezzadri</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Miao,+H" rel="nofollow">H. Miao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Min,+T+J" rel="nofollow">T. J. Min</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Mitchell,+R+E" rel="nofollow">R. E. Mitchell</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Mo,+X+H" rel="nofollow">X. H. Mo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Moses,+B" rel="nofollow">B. Moses</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Muchnoi,+N+Y" rel="nofollow">N. Yu. Muchnoi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Muskalla,+J" rel="nofollow">J. Muskalla</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Nefedov,+Y" rel="nofollow">Y. Nefedov</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Nerling,+F" rel="nofollow">F. Nerling</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Nie,+L+S" rel="nofollow">L. S. Nie</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Nikolaev,+I+B" rel="nofollow">I. B. Nikolaev</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ning,+Z" rel="nofollow">Z. Ning</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Nisar,+S" rel="nofollow">S. Nisar</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Niu,+Q+L" rel="nofollow">Q. L. Niu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Niu,+W+D" rel="nofollow">W. D. Niu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Niu,+Y" rel="nofollow">Y. Niu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Olsen,+S+L" rel="nofollow">S. L. Olsen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ouyang,+Q" rel="nofollow">Q. Ouyang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Pacetti,+S" rel="nofollow">S. Pacetti</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Pan,+X" rel="nofollow">X. Pan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Pan,+Y" rel="nofollow">Y. Pan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Pathak,+A" rel="nofollow">A. Pathak</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Patteri,+P" rel="nofollow">P. Patteri</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Pei,+Y+P" rel="nofollow">Y. P. Pei</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Pelizaeus,+M" rel="nofollow">M. Pelizaeus</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Peng,+H+P" rel="nofollow">H. P. Peng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Peng,+Y+Y" rel="nofollow">Y. Y. Peng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Peters,+K" rel="nofollow">K. Peters</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ping,+J+L" rel="nofollow">J. L. Ping</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ping,+R+G" rel="nofollow">R. G. Ping</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Plura,+S" rel="nofollow">S. Plura</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Prasad,+V" rel="nofollow">V. Prasad</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qi,+F+Z" rel="nofollow">F. Z. Qi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qi,+H" rel="nofollow">H. Qi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qi,+H+R" rel="nofollow">H. R. Qi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qi,+M" rel="nofollow">M. Qi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qi,+T+Y" rel="nofollow">T. Y. Qi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qian,+S" rel="nofollow">S. Qian</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qian,+W+B" rel="nofollow">W. B. Qian</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qiao,+C+F" rel="nofollow">C. F. Qiao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qiao,+X+K" rel="nofollow">X. K. Qiao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qin,+J+J" rel="nofollow">J. J. Qin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qin,+L+Q" rel="nofollow">L. Q. Qin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qin,+L+Y" rel="nofollow">L. Y. Qin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qin,+X+S" rel="nofollow">X. S. Qin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qin,+Z+H" rel="nofollow">Z. H. Qin</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qiu,+J+F" rel="nofollow">J. F. Qiu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Qu,+Z+H" rel="nofollow">Z. H. Qu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Redmer,+C+F" rel="nofollow">C. F. Redmer</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ren,+K+J" rel="nofollow">K. J. Ren</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Rivetti,+A" rel="nofollow">A. Rivetti</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Rolo,+M" rel="nofollow">M. Rolo</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Rong,+G" rel="nofollow">G. Rong</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Rosner,+C" rel="nofollow">Ch. Rosner</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Ruan,+S+N" rel="nofollow">S. N. Ruan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Salone,+N" rel="nofollow">N. Salone</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sarantsev,+A" rel="nofollow">A. Sarantsev</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Schelhaas,+Y" rel="nofollow">Y. Schelhaas</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Schoenning,+K" rel="nofollow">K. Schoenning</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Scodeggio,+M" rel="nofollow">M. Scodeggio</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shan,+K+Y" rel="nofollow">K. Y. Shan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shan,+W" rel="nofollow">W. Shan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shan,+X+Y" rel="nofollow">X. Y. Shan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shang,+Z+J" rel="nofollow">Z. J. Shang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shangguan,+J+F" rel="nofollow">J. F. Shangguan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shao,+L+G" rel="nofollow">L. G. Shao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shao,+M" rel="nofollow">M. Shao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shen,+C+P" rel="nofollow">C. P. Shen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shen,+H+F" rel="nofollow">H. F. Shen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shen,+W+H" rel="nofollow">W. H. Shen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shen,+X+Y" rel="nofollow">X. Y. Shen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shi,+B+A" rel="nofollow">B. A. Shi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shi,+H" rel="nofollow">H. Shi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shi,+H+C" rel="nofollow">H. C. Shi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shi,+J+L" rel="nofollow">J. L. Shi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shi,+J+Y" rel="nofollow">J. Y. Shi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shi,+Q+Q" rel="nofollow">Q. Q. Shi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shi,+S+Y" rel="nofollow">S. Y. Shi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Shi,+X" rel="nofollow">X. Shi</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Song,+J+J" rel="nofollow">J. J. Song</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Song,+T+Z" rel="nofollow">T. Z. Song</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Song,+W+M" rel="nofollow">W. M. Song</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Song,+Y+J" rel="nofollow">Y. J. Song</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Song,+Y+X" rel="nofollow">Y. X. Song</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sosio,+S" rel="nofollow">S. Sosio</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Spataro,+S" rel="nofollow">S. Spataro</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Stieler,+F" rel="nofollow">F. Stieler</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Su,+Y+J" rel="nofollow">Y. J. Su</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+G+B" rel="nofollow">G. B. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+G+X" rel="nofollow">G. X. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+H" rel="nofollow">H. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+H+K" rel="nofollow">H. K. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+J+F" rel="nofollow">J. F. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+K" rel="nofollow">K. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+L" rel="nofollow">L. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+S+S" rel="nofollow">S. S. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+T" rel="nofollow">T. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+W+Y" rel="nofollow">W. Y. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+Y" rel="nofollow">Y. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+Y+J" rel="nofollow">Y. J. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+Y+Z" rel="nofollow">Y. Z. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+Z+Q" rel="nofollow">Z. Q. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Sun,+Z+T" rel="nofollow">Z. T. Sun</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tang,+C+J" rel="nofollow">C. J. Tang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tang,+G+Y" rel="nofollow">G. Y. Tang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tang,+J" rel="nofollow">J. Tang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tang,+M" rel="nofollow">M. Tang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tang,+Y+A" rel="nofollow">Y. A. Tang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tao,+L+Y" rel="nofollow">L. Y. Tao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tao,+Q+T" rel="nofollow">Q. T. Tao</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tat,+M" rel="nofollow">M. Tat</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Teng,+J+X" rel="nofollow">J. X. Teng</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Thoren,+V" rel="nofollow">V. Thoren</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tian,+W+H" rel="nofollow">W. H. Tian</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tian,+Y" rel="nofollow">Y. Tian</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Tian,+Z+F" rel="nofollow">Z. F. Tian</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Uman,+I" rel="nofollow">I. Uman</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wan,+Y" rel="nofollow">Y. Wan</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+S+J" rel="nofollow">S. J. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+B" rel="nofollow">B. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+B+L" rel="nofollow">B. L. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+B" rel="nofollow">Bo Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+D+Y" rel="nofollow">D. Y. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+F" rel="nofollow">F. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+H+J" rel="nofollow">H. J. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+J+J" rel="nofollow">J. J. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+J+P" rel="nofollow">J. P. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+K" rel="nofollow">K. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+L+L" rel="nofollow">L. L. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+M" rel="nofollow">M. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+N+Y" rel="nofollow">N. Y. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+S" rel="nofollow">S. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+S" rel="nofollow">S. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+T" rel="nofollow">T. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+T+J" rel="nofollow">T. J. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+W" rel="nofollow">W. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+W" rel="nofollow">W. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+W+P" rel="nofollow">W. P. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+X" rel="nofollow">X. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+X+F" rel="nofollow">X. F. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+X+J" rel="nofollow">X. J. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+X+L" rel="nofollow">X. L. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+X+N" rel="nofollow">X. N. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Y" rel="nofollow">Y. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Y+D" rel="nofollow">Y. D. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Y+F" rel="nofollow">Y. F. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Y+L" rel="nofollow">Y. L. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Y+N" rel="nofollow">Y. N. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Y+Q" rel="nofollow">Y. Q. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Y" rel="nofollow">Yaqian Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Y" rel="nofollow">Yi Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Z" rel="nofollow">Z. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Z+L" rel="nofollow">Z. L. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Z+Y" rel="nofollow">Z. Y. Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wang,+Z" rel="nofollow">Ziyi Wang</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wei,+D+H" rel="nofollow">D. H. Wei</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Weidner,+F" rel="nofollow">F. Weidner</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wen,+S+P" rel="nofollow">S. P. Wen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wen,+Y+R" rel="nofollow">Y. R. Wen</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wiedner,+U" rel="nofollow">U. Wiedner</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wilkinson,+G" rel="nofollow">G. Wilkinson</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wolke,+M" rel="nofollow">M. Wolke</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wollenberg,+L" rel="nofollow">L. Wollenberg</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+C" rel="nofollow">C. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+J+F" rel="nofollow">J. F. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+L+H" rel="nofollow">L. H. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+L+J" rel="nofollow">L. J. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+X" rel="nofollow">X. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+X+H" rel="nofollow">X. H. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+Y" rel="nofollow">Y. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+Y+H" rel="nofollow">Y. H. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+Y+J" rel="nofollow">Y. J. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Wu,+Z" rel="nofollow">Z. Wu</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Xia,+L" rel="nofollow">L. Xia</a>, <a href="https://arxiv.org/search/hep-ex?searchtype=author&query=Xian,+X+M" rel="nofollow">X. M. 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(562 additional authors not shown)</a> <noscript> You must enable JavaScript to view entire author list.</noscript></div> <div id="download-button-info" hidden>View a PDF of the paper titled Observation of a rare beta decay of the charmed baryon with a Graph Neural Network, by BESIII Collaboration: M. Ablikim and 660 other authors</div> <a class="mobile-submission-download" href="/pdf/2410.13515">View PDF</a> <a class="mobile-submission-download" href="https://arxiv.org/html/2410.13515v1">HTML (experimental)</a> <blockquote class="abstract mathjax"> <span class="descriptor">Abstract:</span>The study of beta decay of the charmed baryon provides unique insights into the fundamental mechanism of the strong and electro-weak interactions. The $\Lambda_c^+$, being the lightest charmed baryon, undergoes disintegration solely through the charm quark weak decay. Its beta decay provides an ideal laboratory for investigating non-perturbative effects in quantum chromodynamics and for constraining the fundamental parameters of the Cabibbo-Kobayashi-Maskawa matrix in weak interaction theory. This article presents the first observation of the Cabibbo-suppressed $\Lambda_c^+$ beta decay into a neutron $\Lambda_c^+ \rightarrow n e^+ \nu_{e}$, based on $4.5~\mathrm{fb}^{-1}$ of electron-positron annihilation data collected with the BESIII detector in the energy region above the $\Lambda^+_c\bar{\Lambda}^-_c$ threshold. A novel machine learning technique, leveraging Graph Neural Networks, has been utilized to effectively separate signals from dominant backgrounds, particularly $\Lambda_c^+ \rightarrow \Lambda e^+ \nu_{e}$. This approach has yielded a statistical significance of more than $10\sigma$. The absolute branching fraction of $\Lambda_c^+ \rightarrow n e^+ \nu_{e}$ is measured to be $(3.57\pm0.34_{\mathrm{stat}}\pm0.14_{\mathrm{syst}})\times 10^{-3}$. For the first time, the CKM matrix element $\left|V_{cd}\right|$ is extracted via a charmed baryon decay to be $0.208\pm0.011_{\rm exp.}\pm0.007_{\rm LQCD}\pm0.001_{\tau_{\Lambda_c^+}}$. This study provides a new probe to further understand fundamental interactions in the charmed baryon sector, and demonstrates the power of modern machine learning techniques in enhancing experimental capability in high energy physics research. </blockquote>  <div class="metatable"> <table summary="Additional metadata"> <tr> <td class="tablecell label">Comments:</td> <td class="tablecell comments mathjax">28 pages, 6 figures</td> </tr> <tr> <td class="tablecell label">Subjects:</td> <td class="tablecell subjects"> <span class="primary-subject">High Energy Physics - Experiment (hep-ex)</span>; High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)</td> </tr><tr> <td class="tablecell label">Cite as:</td> <td class="tablecell arxivid"><span class="arxivid"><a href="https://arxiv.org/abs/2410.13515">arXiv:2410.13515</a> [hep-ex]</span></td> </tr> <tr> <td class="tablecell label"> </td> <td class="tablecell arxividv">(or <span class="arxivid"> <a href="https://arxiv.org/abs/2410.13515v1">arXiv:2410.13515v1</a> [hep-ex]</span> for this version) </td> </tr> <tr> <td class="tablecell label"> </td> <td class="tablecell arxivdoi"> <a href="https://doi.org/10.48550/arXiv.2410.13515" id="arxiv-doi-link">https://doi.org/10.48550/arXiv.2410.13515</a><div class="button-and-tooltip"> <button class="more-info" aria-describedby="more-info-desc-1"> <svg height="15" role="presentation" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path fill="currentColor" d="M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z" class=""></path></svg> <span class="visually-hidden">Focus to learn more</span> </button>  <div role="tooltip" id="more-info-desc-1"> <span class="left-corner"></span> arXiv-issued DOI via DataCite</div> </div> </td> </tr></table> </div> </div> </div> <div class="submission-history"> <h2>Submission history</h2> From: Yangu Li [<a href="/show-email/3c5d805a/2410.13515" rel="nofollow">view email</a>] <br/> <strong>[v1]</strong> Thu, 17 Oct 2024 13:03:54 UTC (2,827 KB)<br/> </div> </div>  <div class="extra-services"> <div class="full-text"> <a name="other"></a> <span class="descriptor">Full-text links:</span> <h2>Access Paper:</h2> <ul> <div id="download-button-info" hidden> View a PDF of the paper titled Observation of a rare beta decay of the charmed baryon with a Graph Neural Network, by BESIII Collaboration: M. 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