[1912.02742] Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector

<?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>[1912.02742] Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector</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=20241206" /> <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="stylesheet" type="text/css" media="screen" href="/static/browse/0.3.4/css/slider.css?v=20241211" /> <script src="//code.jquery.com/jquery-latest.min.js" type="text/javascript"></script> <script type="text/javascript" src="/static/browse/0.3.4/js/donate.js?v=121124"></script><link rel="canonical" href="https://arxiv.org/abs/1912.02742"/> <meta name="description" content="Abstract page for arXiv paper 1912.02742: Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector"><meta property="og:type" content="website" /> <meta property="og:site_name" content="arXiv.org" /> <meta property="og:title" content="Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector" /> <meta property="og:url" content="https://arxiv.org/abs/1912.02742v2" /> <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="Two-neutrino double electron capture is a process allowed in the Standard Model of Particle Physics. This rare decay has been observed in $^{78}$Kr, $^{130}$Ba and more recently in $^{124}$Xe. In this publication we report on the search for this process in $^{124}$Xe and $^{126}$Xe using the full exposure of the Large Underground Xenon (LUX) experiment, in a total of of 27769.5~kg-days. No evidence of a signal was observed, allowing us to set 90\% C.L. lower limits for the half-lives of these decays of $2.0\times10^{21}$~years for $^{124}$Xe and $1.9\times10^{21}$~years for $^{126}$Xe."/> <meta name="twitter:site" content="@arxiv"/> <meta name="twitter:card" content="summary"/> <meta name="twitter:title" content="Search for two neutrino double electron capture of $^{124}$Xe and..."/> <meta name="twitter:description" content="Two-neutrino double electron capture is a process allowed in the Standard Model of Particle Physics. This rare decay has been observed in $^{78}$Kr, $^{130}$Ba and more recently in $^{124}$Xe. In..."/> <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="Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector" /><meta name="citation_author" content="LUX Collaboration" /><meta name="citation_author" content="Akerib, D. S." /><meta name="citation_author" content="Alsum, S." /><meta name="citation_author" content="Ara煤jo, H. M." /><meta name="citation_author" content="Bai, X." /><meta name="citation_author" content="Balajthy, J." /><meta name="citation_author" content="Baxter, A." /><meta name="citation_author" content="Bernard, E. P." /><meta name="citation_author" content="Bernstein, A." /><meta name="citation_author" content="Biesiadzinski, T. P." /><meta name="citation_author" content="Boulton, E. M." /><meta name="citation_author" content="Boxer, B." /><meta name="citation_author" content="Br谩s, P." /><meta name="citation_author" content="Burdin, S." /><meta name="citation_author" content="Byram, D." /><meta name="citation_author" content="Carmona-Benitez, M. C." /><meta name="citation_author" content="Chan, C." /><meta name="citation_author" content="Cutter, J. 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H." /><meta name="citation_author" content="Woodward, D." /><meta name="citation_author" content="Xu, J." /><meta name="citation_author" content="Zhang, C." /><meta name="citation_doi" content="10.1088/1361-6471/ab9c2d" /><meta name="citation_date" content="2019/12/05" /><meta name="citation_online_date" content="2020/05/19" /><meta name="citation_pdf_url" content="http://arxiv.org/pdf/1912.02742" /><meta name="citation_arxiv_id" content="1912.02742" /><meta name="citation_abstract" content="Two-neutrino double electron capture is a process allowed in the Standard Model of Particle Physics. This rare decay has been observed in $^{78}$Kr, $^{130}$Ba and more recently in $^{124}$Xe. In this publication we report on the search for this process in $^{124}$Xe and $^{126}$Xe using the full exposure of the Large Underground Xenon (LUX) experiment, in a total of of 27769.5~kg-days. No evidence of a signal was observed, allowing us to set 90\% C.L. lower limits for the half-lives of these decays of $2.0\times10^{21}$~years for $^{124}$Xe and $1.9\times10^{21}$~years for $^{126}$Xe." /> </head> <body class="with-cu-identity"> <aside class="slider-wrapper bps-banner special-color"> <div class="columns"> <div class="copy-donation bps-banner"> <h2>Change to arXiv's privacy policy</h2> <p>The <a target="_blank" href="https://info.arxiv.org/help/policies/privacy_policy.html">arXiv Privacy Policy</a> has changed. 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$^{126}$Xe in the full exposure of the LUX detector</h1> <div class="authors"><span class="descriptor">Authors:</span><a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=LUX+Collaboration" rel="nofollow">LUX Collaboration</a>: <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Akerib,+D+S" rel="nofollow">D. S. Akerib</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Alsum,+S" rel="nofollow">S. Alsum</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Ara%C3%BAjo,+H+M" rel="nofollow">H. M. Ara煤jo</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Bai,+X" rel="nofollow">X. Bai</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Balajthy,+J" rel="nofollow">J. Balajthy</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Baxter,+A" rel="nofollow">A. Baxter</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Bernard,+E+P" rel="nofollow">E. P. Bernard</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Bernstein,+A" rel="nofollow">A. Bernstein</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Biesiadzinski,+T+P" rel="nofollow">T. P. Biesiadzinski</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Boulton,+E+M" rel="nofollow">E. M. Boulton</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Boxer,+B" rel="nofollow">B. Boxer</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Br%C3%A1s,+P" rel="nofollow">P. Br谩s</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Burdin,+S" rel="nofollow">S. Burdin</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Byram,+D" rel="nofollow">D. Byram</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Carmona-Benitez,+M+C" rel="nofollow">M. C. Carmona-Benitez</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Chan,+C" rel="nofollow">C. Chan</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Cutter,+J+E" rel="nofollow">J. E. Cutter</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=de+Viveiros,+L" rel="nofollow">L. de Viveiros</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Druszkiewicz,+E" rel="nofollow">E. Druszkiewicz</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Fan,+A" rel="nofollow">A. Fan</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Fiorucci,+S" rel="nofollow">S. Fiorucci</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Gaitskell,+R+J" rel="nofollow">R. J. Gaitskell</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Ghag,+C" rel="nofollow">C. Ghag</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Gilchriese,+M+G+D" rel="nofollow">M. G. D. Gilchriese</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Gwilliam,+C" rel="nofollow">C. Gwilliam</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Hall,+C+R" rel="nofollow">C. R. Hall</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Haselschwardt,+S+J" rel="nofollow">S. J. Haselschwardt</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Hertel,+S+A" rel="nofollow">S. A. Hertel</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Hogan,+D+P" rel="nofollow">D. P. Hogan</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Horn,+M" rel="nofollow">M. Horn</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Huang,+D+Q" rel="nofollow">D. Q. Huang</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Ignarra,+C+M" rel="nofollow">C. M. Ignarra</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Jacobsen,+R+G" rel="nofollow">R. G. Jacobsen</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Jahangir,+O" rel="nofollow">O. Jahangir</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Ji,+W" rel="nofollow">W. Ji</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Kamdin,+K" rel="nofollow">K. Kamdin</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Kazkaz,+K" rel="nofollow">K. Kazkaz</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Khaitan,+D" rel="nofollow">D. Khaitan</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Korolkova,+E+V" rel="nofollow">E. V. Korolkova</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Kravits,+S" rel="nofollow">S. Kravits</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Kudryavtsev,+V+A" rel="nofollow">V. A. Kudryavtsev</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Leason,+E" rel="nofollow">E. 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Witherell</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Wolfs,+F+L+H" rel="nofollow">F. L. H. Wolfs</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Woodward,+D" rel="nofollow">D. Woodward</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Xu,+J" rel="nofollow">J. Xu</a>, <a href="https://arxiv.org/search/nucl-ex?searchtype=author&query=Zhang,+C" rel="nofollow">C. Zhang</a></div> <div id="download-button-info" hidden>View a PDF of the paper titled Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector, by LUX Collaboration: D. S. Akerib and 96 other authors</div> <a class="mobile-submission-download" href="/pdf/1912.02742">View PDF</a> <blockquote class="abstract mathjax"> <span class="descriptor">Abstract:</span>Two-neutrino double electron capture is a process allowed in the Standard Model of Particle Physics. This rare decay has been observed in $^{78}$Kr, $^{130}$Ba and more recently in $^{124}$Xe. In this publication we report on the search for this process in $^{124}$Xe and $^{126}$Xe using the full exposure of the Large Underground Xenon (LUX) experiment, in a total of of 27769.5~kg-days. No evidence of a signal was observed, allowing us to set 90\% C.L. lower limits for the half-lives of these decays of $2.0\times10^{21}$~years for $^{124}$Xe and $1.9\times10^{21}$~years for $^{126}$Xe. </blockquote>  <div class="metatable"> <table summary="Additional metadata"> <tr> <td class="tablecell label">Comments:</td> <td class="tablecell comments mathjax">8 pages, 3 figures</td> </tr> <tr> <td class="tablecell label">Subjects:</td> <td class="tablecell subjects"> <span class="primary-subject">Nuclear Experiment (nucl-ex)</span>; Instrumentation and Detectors (physics.ins-det)</td> </tr><tr> <td class="tablecell label">Cite as:</td> <td class="tablecell arxivid"><span class="arxivid"><a href="https://arxiv.org/abs/1912.02742">arXiv:1912.02742</a> [nucl-ex]</span></td> </tr> <tr> <td class="tablecell label"> </td> <td class="tablecell arxividv">(or <span class="arxivid"> <a href="https://arxiv.org/abs/1912.02742v2">arXiv:1912.02742v2</a> [nucl-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.1912.02742" id="arxiv-doi-link">https://doi.org/10.48550/arXiv.1912.02742</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> <tr> <td class="tablecell label">Journal reference:</td> <td class="tablecell jref">J.Phys.G 47 (2020) 10, 105105</td> </tr> <tr> <td class="tablecell label"> <abbr title="Digital Object Identifier">Related DOI</abbr>: </td> <td class="tablecell doi"><a href="https://doi.org/10.1088/1361-6471/ab9c2d" data-doi="10.1088/1361-6471/ab9c2d" class="link-https link-external" rel="external noopener nofollow">https://doi.org/10.1088/1361-6471/ab9c2d</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> DOI(s) linking to related resources </div> </div> </td> </tr> </table> </div> </div> </div> <div class="submission-history"> <h2>Submission history</h2> From: Alexandre Lindote [<a href="/show-email/623898f2/1912.02742" rel="nofollow">view email</a>] <br/> <strong><a href="/abs/1912.02742v1" rel="nofollow">[v1]</a></strong> Thu, 5 Dec 2019 17:29:30 UTC (637 KB)<br/> <strong>[v2]</strong> Tue, 19 May 2020 15:54:57 UTC (635 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 Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector, by LUX Collaboration: D. 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[1912.02742] Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector