Search | arXiv e-print repository

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1"/>  <link rel="apple-touch-icon" sizes="180x180" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon-16x16.png"> <link rel="manifest" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/site.webmanifest"> <link rel="mask-icon" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/safari-pinned-tab.svg" color="#b31b1b"> <link rel="shortcut icon" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon.ico"> <meta name="msapplication-TileColor" content="#b31b1b"> <meta name="msapplication-config" content="images/icons/browserconfig.xml"> <meta name="theme-color" content="#b31b1b">  <title>Search | arXiv e-print repository</title> <script defer src="https://static.arxiv.org/static/base/1.0.0a5/fontawesome-free-5.11.2-web/js/all.js"></script> <link rel="stylesheet" href="https://static.arxiv.org/static/base/1.0.0a5/css/arxivstyle.css" /> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ messageStyle: "none", extensions: ["tex2jax.js"], jax: ["input/TeX", "output/HTML-CSS"], tex2jax: { inlineMath: [ ['$','$'], ["\$","\$"] ], displayMath: [ ['$$','$$'], ["\\[","\\]"] ], processEscapes: true, ignoreClass: '.*', processClass: 'mathjax.*' }, TeX: { extensions: ["AMSmath.js", "AMSsymbols.js", "noErrors.js"], noErrors: { inlineDelimiters: ["$","$"], multiLine: false, style: { "font-size": "normal", "border": "" } } }, "HTML-CSS": { availableFonts: ["TeX"] } }); </script> <script src='//static.arxiv.org/MathJax-2.7.3/MathJax.js'></script> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/notification.js"></script> <link rel="stylesheet" href="https://static.arxiv.org/static/search/0.5.6/css/bulma-tooltip.min.css" /> <link rel="stylesheet" href="https://static.arxiv.org/static/search/0.5.6/css/search.css" /> <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha256-k2WSCIexGzOj3Euiig+TlR8gA0EmPjuc79OEeY5L45g=" crossorigin="anonymous"></script> <script src="https://static.arxiv.org/static/search/0.5.6/js/fieldset.js"></script> <style> radio#cf-customfield_11400 { display: none; } </style> </head> <body> <header><a href="#main-container" class="is-sr-only">Skip to main content</a>  <div class="attribution level is-marginless" role="banner"> <div class="level-left"> <a class="level-item" href="https://cornell.edu/"><img src="https://static.arxiv.org/static/base/1.0.0a5/images/cornell-reduced-white-SMALL.svg" alt="Cornell University" width="200" aria-label="logo" /></a> </div> <div class="level-right is-marginless"><p class="sponsors level-item is-marginless"><span id="support-ack-url">We gratefully acknowledge support from<br /> the Simons Foundation, <a href="https://info.arxiv.org/about/ourmembers.html">member institutions</a>, and all contributors. <a href="https://info.arxiv.org/about/donate.html">Donate</a></span></p></div> </div>  <div class="identity level is-marginless"> <div class="level-left"> <div class="level-item"> <a class="arxiv" href="https://arxiv.org/" aria-label="arxiv-logo"> <img src="https://static.arxiv.org/static/base/1.0.0a5/images/arxiv-logo-one-color-white.svg" aria-label="logo" alt="arxiv logo" width="85" style="width:85px;"/> </a> </div> </div> <div class="search-block level-right"> <form class="level-item mini-search" method="GET" action="https://arxiv.org/search"> <div class="field has-addons"> <div class="control"> <input class="input is-small" type="text" name="query" placeholder="Search..." aria-label="Search term or terms" /> <p class="help"><a href="https://info.arxiv.org/help">Help</a> | <a href="https://arxiv.org/search/advanced">Advanced Search</a></p> </div> <div class="control"> <div class="select is-small"> <select name="searchtype" aria-label="Field to search"> <option value="all" selected="selected">All fields</option> <option value="title">Title</option> <option value="author">Author</option> <option value="abstract">Abstract</option> <option value="comments">Comments</option> <option value="journal_ref">Journal reference</option> <option value="acm_class">ACM classification</option> <option value="msc_class">MSC classification</option> <option value="report_num">Report number</option> <option value="paper_id">arXiv identifier</option> <option value="doi">DOI</option> <option value="orcid">ORCID</option> <option value="author_id">arXiv author ID</option> <option value="help">Help pages</option> <option value="full_text">Full text</option> </select> </div> </div> <input type="hidden" name="source" value="header"> <button class="button is-small is-cul-darker">Search</button> </div> </form> </div> </div>  <div class="container"> <div class="user-tools is-size-7 has-text-right has-text-weight-bold" role="navigation" aria-label="User menu"> <a href="https://arxiv.org/login">Login</a> </div> </div> </header> <main class="container" id="main-container"> <div class="level is-marginless"> <div class="level-left"> <h1 class="title is-clearfix"> Showing 1–12 of 12 results for author: <span class="mathjax">Bhimani, K</span> </h1> </div> <div class="level-right is-hidden-mobile">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> <div class="content"> <form method="GET" action="/search/nucl-ex" aria-role="search"> Searching in archive <strong>nucl-ex</strong>. <a href="/search/?searchtype=author&query=Bhimani%2C+K">Search in all archives.</a> <div class="field has-addons-tablet"> <div class="control is-expanded"> <label for="query" class="hidden-label">Search term or terms</label> <input class="input is-medium" id="query" name="query" placeholder="Search term..." type="text" value="Bhimani, K"> </div> <div class="select control is-medium"> <label class="is-hidden" for="searchtype">Field</label> <select class="is-medium" id="searchtype" name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> </div> <div class="control"> <button class="button is-link is-medium">Search</button> </div> </div> <div class="field"> <div class="control is-size-7"> <label class="radio"> <input checked id="abstracts-0" name="abstracts" type="radio" value="show"> Show abstracts </label> <label class="radio"> <input id="abstracts-1" name="abstracts" type="radio" value="hide"> Hide abstracts </label> </div> </div> <div class="is-clearfix" style="height: 2.5em"> <div class="is-pulled-right"> <a href="/search/advanced?terms-0-term=Bhimani%2C+K&terms-0-field=author&size=50&order=-announced_date_first">Advanced Search</a> </div> </div> <input type="hidden" name="order" value="-announced_date_first"> <input type="hidden" name="size" value="50"> </form> <div class="level breathe-horizontal"> <div class="level-left"> <form method="GET" action="/search/"> <div style="display: none;"> <select id="searchtype" name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> <input id="query" name="query" type="text" value="Bhimani, K"> <ul id="abstracts"><li><input checked id="abstracts-0" name="abstracts" type="radio" value="show"> <label for="abstracts-0">Show abstracts</label></li><li><input id="abstracts-1" name="abstracts" type="radio" value="hide"> <label for="abstracts-1">Hide abstracts</label></li></ul> </div> <div class="box field is-grouped is-grouped-multiline level-item"> <div class="control"> <span class="select is-small"> <select id="size" name="size"><option value="25">25</option><option selected value="50">50</option><option value="100">100</option><option value="200">200</option></select> </span> <label for="size">results per page</label>. </div> <div class="control"> <label for="order">Sort results by</label> <span class="select is-small"> <select id="order" name="order"><option selected value="-announced_date_first">Announcement date (newest first)</option><option value="announced_date_first">Announcement date (oldest first)</option><option value="-submitted_date">Submission date (newest first)</option><option value="submitted_date">Submission date (oldest first)</option><option value="">Relevance</option></select> </span> </div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.06786">arXiv:2408.06786</a> <span> [<a href="https://arxiv.org/pdf/2408.06786">pdf</a>, <a href="https://arxiv.org/format/2408.06786">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> An assay-based background projection for the MAJORANA DEMONSTRATOR using Monte Carlo Uncertainty Propagation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y+-">Y. -D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ejiri%2C+H">H. Ejiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Fuad%2C+N">N. Fuad</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a>, <a href="/search/nucl-ex?searchtype=author&query=Haufe%2C+C+R">C. R. Haufe</a> , et al. (31 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="2408.06786v1-abstract-short" style="display: inline;"> The background index is an important quantity which is used in projecting and calculating the half-life sensitivity of neutrinoless double-beta decay ($0谓尾尾$) experiments. A novel analysis framework is presented to calculate the background index using the specific activities, masses and simulated efficiencies of an experiment's components as distributions. This Bayesian framework includes a unifie… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.06786v1-abstract-full').style.display = 'inline'; document.getElementById('2408.06786v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.06786v1-abstract-full" style="display: none;"> The background index is an important quantity which is used in projecting and calculating the half-life sensitivity of neutrinoless double-beta decay ($0谓尾尾$) experiments. A novel analysis framework is presented to calculate the background index using the specific activities, masses and simulated efficiencies of an experiment's components as distributions. This Bayesian framework includes a unified approach to combine specific activities from assay. Monte Carlo uncertainty propagation is used to build a background index distribution from the specific activity, mass and efficiency distributions. This analysis method is applied to the MAJORANA DEMONSTRATOR, which deployed arrays of high-purity Ge detectors enriched in $^{76}$Ge to search for $0谓尾尾$. The framework projects a mean background index of $\left[8.95 \pm 0.36\right] \times 10^{-4}$cts/(keV kg yr) from $^{232}$Th and $^{238}$U in the DEMONSTRATOR's components. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.06786v1-abstract-full').style.display = 'none'; document.getElementById('2408.06786v1-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">9 pages, 3 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/2308.10856">arXiv:2308.10856</a> <span> [<a href="https://arxiv.org/pdf/2308.10856">pdf</a>, <a href="https://arxiv.org/format/2308.10856">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Data Analysis, Statistics and Probability">physics.data-an</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Majorana Demonstrator Data Release for AI/ML Applications </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y+-">Y. -D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ejiri%2C+H">H. Ejiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Fuad%2C+N">N. Fuad</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a> , et al. (35 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="2308.10856v3-abstract-short" style="display: inline;"> The enclosed data release consists of a subset of the calibration data from the Majorana Demonstrator experiment. Each Majorana event is accompanied by raw Germanium detector waveforms, pulse shape discrimination cuts, and calibrated final energies, all shared in an HDF5 file format along with relevant metadata. This release is specifically designed to support the training and testing of Artificia… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.10856v3-abstract-full').style.display = 'inline'; document.getElementById('2308.10856v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.10856v3-abstract-full" style="display: none;"> The enclosed data release consists of a subset of the calibration data from the Majorana Demonstrator experiment. Each Majorana event is accompanied by raw Germanium detector waveforms, pulse shape discrimination cuts, and calibrated final energies, all shared in an HDF5 file format along with relevant metadata. This release is specifically designed to support the training and testing of Artificial Intelligence (AI) and Machine Learning (ML) algorithms upon our data. This document is structured as follows. Section I provides an overview of the dataset's content and format; Section II outlines the location of this dataset and the method for accessing it; Section III presents the NPML Machine Learning Challenge associated with this dataset; Section IV contains a disclaimer from the Majorana collaboration regarding the use of this dataset; Appendix A contains technical details of this data release. Please direct questions about the material provided within this release to liaobo77@ucsd.edu (A. Li). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.10856v3-abstract-full').style.display = 'none'; document.getElementById('2308.10856v3-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 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 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">Comments:</span> <span class="has-text-grey-dark mathjax">DataPlanet Access: https://dataplanet.ucsd.edu/dataset.xhtml?persistentId=perma:83.ucsddata/UQWQAV</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.08661">arXiv:2306.08661</a> <span> [<a href="https://arxiv.org/pdf/2306.08661">pdf</a>, <a href="https://arxiv.org/format/2306.08661">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/18/09/P09023">10.1088/1748-0221/18/09/P09023 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Energy Calibration of Germanium Detectors for the MAJORANA DEMONSTRATOR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y">Y-D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ejiri%2C+H">H. Ejiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a>, <a href="/search/nucl-ex?searchtype=author&query=Haufe%2C+C+R">C. R. Haufe</a> , et al. (31 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="2306.08661v2-abstract-short" style="display: inline;"> The MAJORANA DEMONSTRATOR was a search for neutrinoless double-beta decay ($0谓尾尾$) in the $^{76}$Ge isotope. It was staged at the 4850-foot level of the Sanford Underground Research Facility (SURF) in Lead, SD. The experiment consisted of 58 germanium detectors housed in a low background shield and was calibrated once per week by deploying a $^{228}$Th line source for 1 to 2 hours. The energy scal… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.08661v2-abstract-full').style.display = 'inline'; document.getElementById('2306.08661v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.08661v2-abstract-full" style="display: none;"> The MAJORANA DEMONSTRATOR was a search for neutrinoless double-beta decay ($0谓尾尾$) in the $^{76}$Ge isotope. It was staged at the 4850-foot level of the Sanford Underground Research Facility (SURF) in Lead, SD. The experiment consisted of 58 germanium detectors housed in a low background shield and was calibrated once per week by deploying a $^{228}$Th line source for 1 to 2 hours. The energy scale calibration determination for the detector array was automated using custom analysis tools. We describe the offline procedure for calibration of the Demonstrator germanium detectors, including the simultaneous fitting of multiple spectral peaks, estimation of energy scale uncertainties, and the automation of the calibration procedure. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.08661v2-abstract-full').style.display = 'none'; document.getElementById('2306.08661v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 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">Journal ref:</span> JINST 18, P09023 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.01965">arXiv:2306.01965</a> <span> [<a href="https://arxiv.org/pdf/2306.01965">pdf</a>, <a href="https://arxiv.org/format/2306.01965">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey 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.131.152501">10.1103/PhysRevLett.131.152501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Constraints on the decay of $^{180m}$Ta </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ejiri%2C+H">H. Ejiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Goett%2C+J">J. Goett</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a>, <a href="/search/nucl-ex?searchtype=author&query=Haufe%2C+C+R">C. R. Haufe</a> , et al. (34 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="2306.01965v1-abstract-short" style="display: inline;"> $^{180m}$Ta is a rare nuclear isomer whose decay has never been observed. Its remarkably long lifetime surpasses the half-lives of all other known $尾… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.01965v1-abstract-full').style.display = 'inline'; document.getElementById('2306.01965v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.01965v1-abstract-full" style="display: none;"> $^{180m}$Ta is a rare nuclear isomer whose decay has never been observed. Its remarkably long lifetime surpasses the half-lives of all other known $尾$ and electron capture decays due to the large K-spin differences and small energy differences between the isomeric and lower energy states. Detecting its decay presents a significant experimental challenge but could shed light on neutrino-induced nucleosynthesis mechanisms, the nature of dark matter and K-spin violation. For this study, we repurposed the MAJORANA DEMONSTRATOR, an experimental search for the neutrinoless double-beta decay of $^{76}$Ge using an array of high-purity germanium detectors, to search for the decay of $^{180m}$Ta. More than 17 kilograms, the largest amount of tantalum metal ever used for such a search was installed within the ultra-low background detector array. In this paper we present results from the first year of Ta data taking and provide an updated limit for the $^{180m}$Ta half-life on the different decay channels. With new limits up to 1.5 x $10^{19}$ years, we improved existing limits by one to two orders of magnitude. This result is the most sensitive search for a single $尾$ and electron capture decay ever achieved. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.01965v1-abstract-full').style.display = 'none'; document.getElementById('2306.01965v1-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 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">Journal ref:</span> Phys. Rev. Lett. 131, 152501 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.10592">arXiv:2209.10592</a> <span> [<a href="https://arxiv.org/pdf/2209.10592">pdf</a>, <a href="https://arxiv.org/format/2209.10592">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Modeling Backgrounds for the MAJORANA DEMONSTRATOR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Haufe%2C+C+R">C. R. Haufe</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y">Y-D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ejiri%2C+H">H. Ejiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a> , et al. (33 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="2209.10592v2-abstract-short" style="display: inline;"> The MAJORANA DEMONSTRATOR is a neutrinoless double-beta decay ($0谓尾尾$) experiment containing $\sim$30 kg of p-type point contact germanium detectors enriched to 88% in 76Ge and $\sim$14 kg of natural germanium detectors. The detectors are housed in two electroformed copper cryostats and surrounded by a graded passive shield with active muon veto. An extensive radioassay campaign was performed prio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.10592v2-abstract-full').style.display = 'inline'; document.getElementById('2209.10592v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.10592v2-abstract-full" style="display: none;"> The MAJORANA DEMONSTRATOR is a neutrinoless double-beta decay ($0谓尾尾$) experiment containing $\sim$30 kg of p-type point contact germanium detectors enriched to 88% in 76Ge and $\sim$14 kg of natural germanium detectors. The detectors are housed in two electroformed copper cryostats and surrounded by a graded passive shield with active muon veto. An extensive radioassay campaign was performed prior to installation to insure the use of ultra-clean materials. The DEMONSTRATOR achieved one of the lowest background rates in the region of the $0谓尾尾$ Q-value, 15.7 $\pm$ 1.4 cts/(FWHM t y) from the low-background configuration spanning most of the 64.5 kg-yr active exposure. Nevertheless this background rate is a factor of five higher than the projected background rate. This discrepancy arises from an excess of events from the 232Th decay chain. Background model fits aim to understand this deviation from assay-based projections, potentially determine the source(s) of observed backgrounds, and allow a precision measurement of the two-neutrino double-beta decay half-life. The fits agree with earlier simulation studies, which indicate the origin of the 232Th excess is not from a near-detector component and have informed design decisions for the next-generation LEGEND experiment. Recent findings have narrowed the suspected locations for the excess activity, motivating a final simulation and assay campaign to complete the background model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.10592v2-abstract-full').style.display = 'none'; document.getElementById('2209.10592v2-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">v1</span> submitted 21 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">8 pages, 6 figures, Proceedings from the Low Radioactivity Techniques Workshop 2022 in Rapid City, SD, USA</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.10710">arXiv:2207.10710</a> <span> [<a href="https://arxiv.org/pdf/2207.10710">pdf</a>, <a href="https://arxiv.org/format/2207.10710">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Data Analysis, Statistics and Probability">physics.data-an</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.107.014321">10.1103/PhysRevC.107.014321 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Interpretable Boosted Decision Tree Analysis for the Majorana Demonstrator </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y+-">Y -D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a>, <a href="/search/nucl-ex?searchtype=author&query=Haufe%2C+C+R">C. R. Haufe</a>, <a href="/search/nucl-ex?searchtype=author&query=Henning%2C+R">R. Henning</a> , et al. (30 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="2207.10710v5-abstract-short" style="display: inline;"> The Majorana Demonstrator is a leading experiment searching for neutrinoless double-beta decay with high purity germanium detectors (HPGe). Machine learning provides a new way to maximize the amount of information provided by these detectors, but the data-driven nature makes it less interpretable compared to traditional analysis. An interpretability study reveals the machine's decision-making logi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.10710v5-abstract-full').style.display = 'inline'; document.getElementById('2207.10710v5-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.10710v5-abstract-full" style="display: none;"> The Majorana Demonstrator is a leading experiment searching for neutrinoless double-beta decay with high purity germanium detectors (HPGe). Machine learning provides a new way to maximize the amount of information provided by these detectors, but the data-driven nature makes it less interpretable compared to traditional analysis. An interpretability study reveals the machine's decision-making logic, allowing us to learn from the machine to feedback to the traditional analysis. In this work, we have presented the first machine learning analysis of the data from the Majorana Demonstrator; this is also the first interpretable machine learning analysis of any germanium detector experiment. Two gradient boosted decision tree models are trained to learn from the data, and a game-theory-based model interpretability study is conducted to understand the origin of the classification power. By learning from data, this analysis recognizes the correlations among reconstruction parameters to further enhance the background rejection performance. By learning from the machine, this analysis reveals the importance of new background categories to reciprocally benefit the standard Majorana analysis. This model is highly compatible with next-generation germanium detector experiments like LEGEND since it can be simultaneously trained on a large number of detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.10710v5-abstract-full').style.display = 'none'; document.getElementById('2207.10710v5-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 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">13 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C, Vol. 107, Iss. 1, 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/2207.07638">arXiv:2207.07638</a> <span> [<a href="https://arxiv.org/pdf/2207.07638">pdf</a>, <a href="https://arxiv.org/format/2207.07638">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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.130.062501">10.1103/PhysRevLett.130.062501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Final Result of the MAJORANA DEMONSTRATOR's Search for Neutrinoless Double-$尾$ Decay in $^{76}$Ge </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+P+J">P. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y">Y-D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ejiri%2C+H">H. Ejiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a> , et al. (35 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="2207.07638v2-abstract-short" style="display: inline;"> The MAJORANA DEMONSTRATOR searched for neutrinoless double-$尾$ decay ($0谓尾尾$) of $^{76}$Ge using modular arrays of high-purity Ge detectors operated in vacuum cryostats in a low-background shield. The arrays operated with up to 40.4 kg of detectors (27.2 kg enriched to $\sim$88\% in $^{76}$Ge). From these measurements, the DEMONSTRATOR has accumulated 64.5 kg yr of enriched active exposure. With a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.07638v2-abstract-full').style.display = 'inline'; document.getElementById('2207.07638v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.07638v2-abstract-full" style="display: none;"> The MAJORANA DEMONSTRATOR searched for neutrinoless double-$尾$ decay ($0谓尾尾$) of $^{76}$Ge using modular arrays of high-purity Ge detectors operated in vacuum cryostats in a low-background shield. The arrays operated with up to 40.4 kg of detectors (27.2 kg enriched to $\sim$88\% in $^{76}$Ge). From these measurements, the DEMONSTRATOR has accumulated 64.5 kg yr of enriched active exposure. With a world-leading energy resolution of 2.52 keV FWHM at the 2039 keV $Q_{尾尾}$ (0.12\%), we set a half-life limit of $0谓尾尾$ in $^{76}$Ge at $T_{1/2}>8.3\times10^{25}$ yr (90\% C.L.). This provides a range of upper limits on $m_{尾尾}$ of $(113-269)$ meV (90\% C.L.), depending on the choice of nuclear matrix elements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.07638v2-abstract-full').style.display = 'none'; document.getElementById('2207.07638v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 February, 2023; <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, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 130, 062501 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.05789">arXiv:2206.05789</a> <span> [<a href="https://arxiv.org/pdf/2206.05789">pdf</a>, <a href="https://arxiv.org/format/2206.05789">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey 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.129.081803">10.1103/PhysRevLett.129.081803 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for solar axions via axion-photon coupling with the Majorana Demonstrator </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y">Y-D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ejiri%2C+H">H. Ejiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a>, <a href="/search/nucl-ex?searchtype=author&query=Haufe%2C+C+R">C. R. Haufe</a> , et al. (33 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="2206.05789v2-abstract-short" style="display: inline;"> Axions were originally proposed to explain the strong-CP problem in QCD. Through the axion-photon coupling, the Sun could be a major source of axions, which could be measured in solid state detection experiments with enhancements due to coherent Primakoff-Bragg scattering. The Majorana Demonstrator experiment has searched for solar axions with a set of $^{76}$Ge-enriched high purity germanium dete… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.05789v2-abstract-full').style.display = 'inline'; document.getElementById('2206.05789v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.05789v2-abstract-full" style="display: none;"> Axions were originally proposed to explain the strong-CP problem in QCD. Through the axion-photon coupling, the Sun could be a major source of axions, which could be measured in solid state detection experiments with enhancements due to coherent Primakoff-Bragg scattering. The Majorana Demonstrator experiment has searched for solar axions with a set of $^{76}$Ge-enriched high purity germanium detectors using a 33 kg-yr exposure collected between Jan. 2017 and Nov. 2019. A temporal-energy analysis gives a new limit on the axion-photon coupling as $g_{a纬}<1.45\times 10^{-9}$ GeV$^{-1}$ (95% C.I.) for axions with mass up to 100 eV/$c^2$. This improves laboratory-based limits between about 1 eV/$c^2$ and 100 eV/$c^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.05789v2-abstract-full').style.display = 'none'; document.getElementById('2206.05789v2-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 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 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">Minor updates to match published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review Letters 129, 081803 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.14228">arXiv:2203.14228</a> <span> [<a href="https://arxiv.org/pdf/2203.14228">pdf</a>, <a href="https://arxiv.org/format/2203.14228">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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/PhysRevC.105.064610">10.1103/PhysRevC.105.064610 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Experimental study of 13C(伪,n)16O reactions in the Majorana Demonstrator calibration data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=MAJORANA+Collaboration"> MAJORANA Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y">Y-D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ejiri%2C+H">H. Ejiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a> , et al. (33 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="2203.14228v2-abstract-short" style="display: inline;"> Neutron captures and delayed decays of reaction products are common sources of backgrounds in ultra-rare event searches. In this work, we studied $^{13}$C($伪,n)^{16}$O reactions induced by $伪$-particles emitted within the calibration sources of the \textsc{Majorana Demonstrator}. These sources are thorium-based calibration standards enclosed in carbon-rich materials. The reaction rate was estimate… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.14228v2-abstract-full').style.display = 'inline'; document.getElementById('2203.14228v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.14228v2-abstract-full" style="display: none;"> Neutron captures and delayed decays of reaction products are common sources of backgrounds in ultra-rare event searches. In this work, we studied $^{13}$C($伪,n)^{16}$O reactions induced by $伪$-particles emitted within the calibration sources of the \textsc{Majorana Demonstrator}. These sources are thorium-based calibration standards enclosed in carbon-rich materials. The reaction rate was estimated by using the 6129-keV $纬$-rays emitted from the excited $^{16}$O states that are populated when the incoming $伪$-particles exceed the reaction Q-value. Thanks to the excellent energy performance of the \textsc{Demonstrator}'s germanium detectors, these characteristic photons can be clearly observed in the calibration data. Facilitated by \textsc{Geant4} simulations, a comparison between the observed 6129-keV photon rates and predictions by a TALYS-based software was performed. The measurements and predictions were found to be consistent, albeit with large statistical uncertainties. This agreement provides support for background projections from ($伪,n$)-reactions in future double-beta decay search efforts. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.14228v2-abstract-full').style.display = 'none'; document.getElementById('2203.14228v2-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 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">Published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review C 105, 064610 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.02033">arXiv:2203.02033</a> <span> [<a href="https://arxiv.org/pdf/2203.02033">pdf</a>, <a href="https://arxiv.org/format/2203.02033">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey 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/10.1038/s41567-024-02437-9">10.1038/s41567-024-02437-9 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for charge nonconservation and Pauli exclusion principle violation with the Majorana Demonstrator </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=MAJORANA+Collaboration"> MAJORANA Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y">Y-D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ejiri%2C+H">H. Ejiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Elliott%2C+S+R">S. R. Elliott</a>, <a href="/search/nucl-ex?searchtype=author&query=Giovanetti%2C+G+K">G. K. Giovanetti</a>, <a href="/search/nucl-ex?searchtype=author&query=Green%2C+M+P">M. P. Green</a>, <a href="/search/nucl-ex?searchtype=author&query=Gruszko%2C+J">J. Gruszko</a>, <a href="/search/nucl-ex?searchtype=author&query=Guinn%2C+I+S">I. S. Guinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Guiseppe%2C+V+E">V. E. Guiseppe</a> , et al. (33 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="2203.02033v2-abstract-short" style="display: inline;"> Charge conservation and the Pauli exclusion principle (PEP) result from fundamental symmetries in the Standard Model, and are typically taken as axiomatic. High-precision tests for small violations of these symmetries could point to new physics. In this work we consider three models for violation of these processes which would produce detectable ionization in the high-purity germanium detectors of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.02033v2-abstract-full').style.display = 'inline'; document.getElementById('2203.02033v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.02033v2-abstract-full" style="display: none;"> Charge conservation and the Pauli exclusion principle (PEP) result from fundamental symmetries in the Standard Model, and are typically taken as axiomatic. High-precision tests for small violations of these symmetries could point to new physics. In this work we consider three models for violation of these processes which would produce detectable ionization in the high-purity germanium detectors of the Majorana Demonstrator. Using a 37.5 kg-yr exposure, we report a new lower limit on the electron mean lifetime of $蟿_e > 3.2 \times 10^{25}$ yr (90\% CL), the best result for this decay channel ($e \rightarrow 谓_e \overline{谓_e} 谓_e$ or more generally $e \rightarrow \mathrm{invisibles}$) in more than two decades. We also present searches for two types of violation of the PEP, setting new limits on the probability of two electrons forming a symmetric quantum state. Using our $^{228}$Th calibration data set, which introduces electrons new to the system through electron-positron pair production, we obtain a world-leading model-independent limit for a terrestrial experiment of $尾^2/2 < 1.0 \times 10^{-3}$ (99.7\% CL). Our 37.5 kg-yr exposure is also used to search for a process where an electron in an atomic system spontaneously violates the PEP, resulting in a model-dependent upper limit of $尾^2/2 < 1.0 \times 10^{-48}$ (90\% CL). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.02033v2-abstract-full').style.display = 'none'; document.getElementById('2203.02033v2-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">v1</span> submitted 3 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nat. Phys. 20, 1078-3038, 2024 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.09351">arXiv:2111.09351</a> <span> [<a href="https://arxiv.org/pdf/2111.09351">pdf</a>, <a href="https://arxiv.org/format/2111.09351">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/17/05/T05003">10.1088/1748-0221/17/05/T05003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The MAJORANA DEMONSTRATOR Readout Electronics System </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Abgrall%2C+N">N. Abgrall</a>, <a href="/search/nucl-ex?searchtype=author&query=Amman%2C+M">M. Amman</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+P+J">P. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertrand%2C+F+E">F. E. Bertrand</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bos%2C+B">B. Bos</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradley%2C+A+W">A. W. Bradley</a>, <a href="/search/nucl-ex?searchtype=author&query=Burritt%2C+T+H">T. H. Burritt</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Buuck%2C+M">M. Buuck</a>, <a href="/search/nucl-ex?searchtype=author&query=Caldwell%2C+T+S">T. S. Caldwell</a>, <a href="/search/nucl-ex?searchtype=author&query=Chan%2C+Y">Y-D. Chan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christofferson%2C+C+D">C. D. Christofferson</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+P+-">P. -H. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M+L">M. L. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Cooper%2C+R+J">R. J. Cooper</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuesta%2C+C">C. Cuesta</a>, <a href="/search/nucl-ex?searchtype=author&query=Detwiler%2C+J+A">J. A. Detwiler</a>, <a href="/search/nucl-ex?searchtype=author&query=Drobizhev%2C+A">A. Drobizhev</a>, <a href="/search/nucl-ex?searchtype=author&query=Edwins%2C+D+W">D. W. Edwins</a>, <a href="/search/nucl-ex?searchtype=author&query=Efremenko%2C+Y">Yu. Efremenko</a> , et al. (54 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="2111.09351v2-abstract-short" style="display: inline;"> The MAJORANA DEMONSTRATOR comprises two arrays of high-purity germanium detectors constructed to search for neutrinoless double-beta decay in 76-Ge and other physics beyond the Standard Model. Its readout electronics were designed to have low electronic noise, and radioactive backgrounds were minimized by using low-mass components and low-radioactivity materials near the detectors. This paper prov… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.09351v2-abstract-full').style.display = 'inline'; document.getElementById('2111.09351v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.09351v2-abstract-full" style="display: none;"> The MAJORANA DEMONSTRATOR comprises two arrays of high-purity germanium detectors constructed to search for neutrinoless double-beta decay in 76-Ge and other physics beyond the Standard Model. Its readout electronics were designed to have low electronic noise, and radioactive backgrounds were minimized by using low-mass components and low-radioactivity materials near the detectors. This paper provides a description of all components of the MAJORANA DEMONSTRATOR readout electronics, spanning the front-end electronics and internal cabling, back-end electronics, digitizer, and power supplies, along with the grounding scheme. The spectroscopic performance achieved with these readout electronics is also demonstrated. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.09351v2-abstract-full').style.display = 'none'; document.getElementById('2111.09351v2-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 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">For submission to JINST, 17 figures. v2: revised version</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.11462">arXiv:2107.11462</a> <span> [<a href="https://arxiv.org/pdf/2107.11462">pdf</a>, <a href="https://arxiv.org/format/2107.11462">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> LEGEND-1000 Preconceptual Design Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=LEGEND+Collaboration"> LEGEND Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abgrall%2C+N">N. Abgrall</a>, <a href="/search/nucl-ex?searchtype=author&query=Abt%2C+I">I. Abt</a>, <a href="/search/nucl-ex?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexander%2C+A">A. Alexander</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreoiu%2C+C">C. Andreoiu</a>, <a href="/search/nucl-ex?searchtype=author&query=Araujo%2C+G+R">G. R. Araujo</a>, <a href="/search/nucl-ex?searchtype=author&query=Avignone%2C+F+T">F. T. Avignone III</a>, <a href="/search/nucl-ex?searchtype=author&query=Bae%2C+W">W. Bae</a>, <a href="/search/nucl-ex?searchtype=author&query=Bakalyarov%2C+A">A. Bakalyarov</a>, <a href="/search/nucl-ex?searchtype=author&query=Balata%2C+M">M. Balata</a>, <a href="/search/nucl-ex?searchtype=author&query=Bantel%2C+M">M. Bantel</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabanov%2C+I">I. Barabanov</a>, <a href="/search/nucl-ex?searchtype=author&query=Barabash%2C+A+S">A. S. Barabash</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+C+J">C. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Barton%2C+P+J">P. J. Barton</a>, <a href="/search/nucl-ex?searchtype=author&query=Baudis%2C+L">L. Baudis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bauer%2C+C">C. Bauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernieri%2C+E">E. Bernieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Bezrukov%2C+L">L. Bezrukov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhimani%2C+K+H">K. H. Bhimani</a>, <a href="/search/nucl-ex?searchtype=author&query=Biancacci%2C+V">V. Biancacci</a>, <a href="/search/nucl-ex?searchtype=author&query=Blalock%2C+E">E. Blalock</a>, <a href="/search/nucl-ex?searchtype=author&query=Bolozdynya%2C+A">A. Bolozdynya</a> , et al. (239 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="2107.11462v1-abstract-short" style="display: inline;"> We propose the construction of LEGEND-1000, the ton-scale Large Enriched Germanium Experiment for Neutrinoless $尾尾$ Decay. This international experiment is designed to answer one of the highest priority questions in fundamental physics. It consists of 1000 kg of Ge detectors enriched to more than 90% in the $^{76}$Ge isotope operated in a liquid argon active shield at a deep underground laboratory… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.11462v1-abstract-full').style.display = 'inline'; document.getElementById('2107.11462v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.11462v1-abstract-full" style="display: none;"> We propose the construction of LEGEND-1000, the ton-scale Large Enriched Germanium Experiment for Neutrinoless $尾尾$ Decay. This international experiment is designed to answer one of the highest priority questions in fundamental physics. It consists of 1000 kg of Ge detectors enriched to more than 90% in the $^{76}$Ge isotope operated in a liquid argon active shield at a deep underground laboratory. By combining the lowest background levels with the best energy resolution in the field, LEGEND-1000 will perform a quasi-background-free search and can make an unambiguous discovery of neutrinoless double-beta decay with just a handful of counts at the decay $Q$ value. The experiment is designed to probe this decay with a 99.7%-CL discovery sensitivity in the $^{76}$Ge half-life of $1.3\times10^{28}$ years, corresponding to an effective Majorana mass upper limit in the range of 9-21 meV, to cover the inverted-ordering neutrino mass scale with 10 yr of live time. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.11462v1-abstract-full').style.display = 'none'; document.getElementById('2107.11462v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

CINXE.COM

Search | arXiv e-print repository