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 1–15 of 15 results for author: <span class="mathjax">Kolar, T</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=Kolar%2C+T">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="Kolar, T"> </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=Kolar%2C+T&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="Kolar, T"> <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/2409.18463">arXiv:2409.18463</a> <span> [<a href="https://arxiv.org/pdf/2409.18463">pdf</a>, <a href="https://arxiv.org/format/2409.18463">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"> First Measurement of Near- and Sub-Threshold $J/蠄$ Photoproduction off Nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Pybus%2C+J+R">J. R. Pybus</a>, <a href="/search/nucl-ex?searchtype=author&query=Ehinger%2C+L">L. Ehinger</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">T. Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Devkota%2C+B">B. Devkota</a>, <a href="/search/nucl-ex?searchtype=author&query=Sharp%2C+P">P. Sharp</a>, <a href="/search/nucl-ex?searchtype=author&query=Yu%2C+B">B. Yu</a>, <a href="/search/nucl-ex?searchtype=author&query=Dalton%2C+M+M">M. M. Dalton</a>, <a href="/search/nucl-ex?searchtype=author&query=Dutta%2C+D">D. Dutta</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+H">H. Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Hen%2C+O">O. Hen</a>, <a href="/search/nucl-ex?searchtype=author&query=Piasetzky%2C+E">E. Piasetzky</a>, <a href="/search/nucl-ex?searchtype=author&query=Santiesteban%2C+S+N">S. N. Santiesteban</a>, <a href="/search/nucl-ex?searchtype=author&query=Schmidt%2C+A">A. Schmidt</a>, <a href="/search/nucl-ex?searchtype=author&query=Somov%2C+A">A. Somov</a>, <a href="/search/nucl-ex?searchtype=author&query=Szumila-Vance%2C+H">H. Szumila-Vance</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+S">S. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Barlow%2C+J">J. Barlow</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+V+V">V. V. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhatt%2C+H+D">H. D. Bhatt</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhetuwal%2C+D">Deepak Bhetuwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Black%2C+T">T. Black</a>, <a href="/search/nucl-ex?searchtype=author&query=Briscoe%2C+W+J">W. J. Briscoe</a> , et al. (43 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.18463v2-abstract-short" style="display: inline;"> We report on the first measurement of $J/蠄$ photoproduction from nuclei in the photon energy range of $7$ to $10.8$ GeV, extending above and below the photoproduction threshold in the free proton of $\sim8.2$ GeV. The experiment used a tagged photon beam incident on deuterium, helium, and carbon, and the GlueX detector at Jefferson Lab to measure the semi-inclusive $A(纬,e^+e^-p)$ reaction with a d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.18463v2-abstract-full').style.display = 'inline'; document.getElementById('2409.18463v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.18463v2-abstract-full" style="display: none;"> We report on the first measurement of $J/蠄$ photoproduction from nuclei in the photon energy range of $7$ to $10.8$ GeV, extending above and below the photoproduction threshold in the free proton of $\sim8.2$ GeV. The experiment used a tagged photon beam incident on deuterium, helium, and carbon, and the GlueX detector at Jefferson Lab to measure the semi-inclusive $A(纬,e^+e^-p)$ reaction with a dilepton invariant mass $M(e^+e^-)\sim m_{J/蠄}=3.1$ GeV. The incoherent $J/蠄$ photoproduction cross sections in the measured nuclei are extracted as a function of the incident photon energy, momentum transfer, and proton reconstructed missing light-cone momentum fraction. Comparisons with theoretical predictions assuming a dipole form factor allow extracting a gluonic radius for bound protons of $\sqrt{\langle r^2\rangle}=0.85\pm0.14$ fm. The data also suggest an excess of the measured cross section for sub-threshold production and for interactions with high missing light-cone momentum fraction protons. The measured enhancement can be explained by modified gluon structure for high-virtuality bound-protons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.18463v2-abstract-full').style.display = 'none'; document.getElementById('2409.18463v2-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.01935">arXiv:2311.01935</a> <span> [<a href="https://arxiv.org/pdf/2311.01935">pdf</a>, <a href="https://arxiv.org/format/2311.01935">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="Nuclear Theory">nucl-th</span> </div> </div> <p class="title is-5 mathjax"> Nuclear density dependence of polarization transfer in quasi-elastic ${\rm A}(\vec{e},e' \vec{p})$ reactions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">T. Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Cosyn%2C+W">W. Cosyn</a>, <a href="/search/nucl-ex?searchtype=author&query=Giusti%2C+C">C. Giusti</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Ashkenazi%2C+A">A. Ashkenazi</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Brecelj%2C+T">T. Brecelj</a>, <a href="/search/nucl-ex?searchtype=author&query=Christmann%2C+M">M. Christmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Cohen%2C+E+O">E. O. Cohen</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Eckert%2C+P">P. Eckert</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">R. Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Geimer%2C+J">J. Geimer</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%BClker%2C+P">P. G眉lker</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">M. Hoek</a>, <a href="/search/nucl-ex?searchtype=author&query=Izraeli%2C+D">D. Izraeli</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">S. Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Klag%2C+P">P. Klag</a>, <a href="/search/nucl-ex?searchtype=author&query=Kohl%2C+Y">Y. Kohl</a>, <a href="/search/nucl-ex?searchtype=author&query=Korover%2C+I">I. Korover</a>, <a href="/search/nucl-ex?searchtype=author&query=Lichtenstadt%2C+J">J. Lichtenstadt</a>, <a href="/search/nucl-ex?searchtype=author&query=Littich%2C+M">M. Littich</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="2311.01935v3-abstract-short" style="display: inline;"> The ratio of the transverse and longitudinal component of polarization transfer to protons in the quasi-elastic $(\vec{e}, e^{\prime} \vec{p}\,)$ reaction, $P^{\prime}_x/P^{\prime}_z$, is sensitive to the proton's electromagnetic form factor ratio, $G_E/G_M$. To explore density-dependent in-medium modifications, a comparison of polarization transfer ratios involving protons from distinct nuclear s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01935v3-abstract-full').style.display = 'inline'; document.getElementById('2311.01935v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.01935v3-abstract-full" style="display: none;"> The ratio of the transverse and longitudinal component of polarization transfer to protons in the quasi-elastic $(\vec{e}, e^{\prime} \vec{p}\,)$ reaction, $P^{\prime}_x/P^{\prime}_z$, is sensitive to the proton's electromagnetic form factor ratio, $G_E/G_M$. To explore density-dependent in-medium modifications, a comparison of polarization transfer ratios involving protons from distinct nuclear shells, each with different local nuclear densities, has been proposed. In this study, we present such comparisons between four shells, $1s_{1/2}$, $1p_{3/2}$ in $^{12}\mathrm{C}$ and $1d_{3/2}$, $2s_{1/2}$ in $^{40}\mathrm{Ca}$. In an effort to account for other many-body effects that may differ between shells, we use a state-of-the-art relativistic distorted-wave impulse-approximation (RDWIA) calculation and present the double ratios, $(P^{\prime}_x/P^{\prime}_z)_{\rm Data}/(P^{\prime}_x/P^{\prime}_z)_{\rm RDWIA}$ as well as the super ratios, $\left[(P^{\prime}_x/P^{\prime}_z)_{\rm A}/(P^{\prime}_x/P^{\prime}_z)_{\rm B}\right]_{\rm Data}/\left[(P^{\prime}_x/P^{\prime}_z)_{\rm A}/(P^{\prime}_x/P^{\prime}_z)_{\rm B}\right]_{\rm RDWIA}$, for chosen shells A and B, as a function of effective local nuclear densities. We find that double ratios for individual shells show a dependence on the probed effective nuclear densities. Studying the ratios, we observed a systematic variation between pairs of higher- and lower-density shells. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01935v3-abstract-full').style.display = 'none'; document.getElementById('2311.01935v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.06339">arXiv:2308.06339</a> <span> [<a href="https://arxiv.org/pdf/2308.06339">pdf</a>, <a href="https://arxiv.org/format/2308.06339">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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/10.1016/j.physletb.2024.138790">10.1016/j.physletb.2024.138790 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for axion-like particles through nuclear Primakoff production using the GlueX detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Pybus%2C+J+R">J. R. Pybus</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">T. Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Devkota%2C+B">B. Devkota</a>, <a href="/search/nucl-ex?searchtype=author&query=Sharp%2C+P">P. Sharp</a>, <a href="/search/nucl-ex?searchtype=author&query=Yu%2C+B">B. Yu</a>, <a href="/search/nucl-ex?searchtype=author&query=Hen%2C+O">O. Hen</a>, <a href="/search/nucl-ex?searchtype=author&query=Piasetzky%2C+E">E. Piasetzky</a>, <a href="/search/nucl-ex?searchtype=author&query=Santiesteban%2C+S+N">S. N. Santiesteban</a>, <a href="/search/nucl-ex?searchtype=author&query=Schmidt%2C+A">A. Schmidt</a>, <a href="/search/nucl-ex?searchtype=author&query=Somov%2C+A">A. Somov</a>, <a href="/search/nucl-ex?searchtype=author&query=Soreq%2C+Y">Y. Soreq</a>, <a href="/search/nucl-ex?searchtype=author&query=Szumila-Vance%2C+H">H. Szumila-Vance</a>, <a href="/search/nucl-ex?searchtype=author&query=Akondi%2C+C+S">C. S. Akondi</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+V+V">V. V. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhatt%2C+H">H. Bhatt</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhetuwal%2C+D">D. Bhetuwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Dalton%2C+M+M">M. M. Dalton</a>, <a href="/search/nucl-ex?searchtype=author&query=Deur%2C+A">A. Deur</a>, <a href="/search/nucl-ex?searchtype=author&query=Dotel%2C+R">R. Dotel</a>, <a href="/search/nucl-ex?searchtype=author&query=Fanelli%2C+C">C. Fanelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+J">J. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Hague%2C+T+J">T. J. Hague</a>, <a href="/search/nucl-ex?searchtype=author&query=Higinbotham%2C+D+W">D. W. Higinbotham</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoffman%2C+N+D">N. D. Hoffman</a> , et al. (18 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="2308.06339v1-abstract-short" style="display: inline;"> We report on the results of the first search for the production of axion-like particles (ALP) via Primakoff production on nuclear targets using the GlueX detector. This search uses an integrated luminosity of 100 pb$^{-1}\cdot$nucleon on a $^{12}$C target, and explores the mass region of 200 < $m_a$ < 450 MeV via the decay $X\rightarrow纬纬$. This mass range is between the $蟺^0$ and $畏$ masses, whic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.06339v1-abstract-full').style.display = 'inline'; document.getElementById('2308.06339v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.06339v1-abstract-full" style="display: none;"> We report on the results of the first search for the production of axion-like particles (ALP) via Primakoff production on nuclear targets using the GlueX detector. This search uses an integrated luminosity of 100 pb$^{-1}\cdot$nucleon on a $^{12}$C target, and explores the mass region of 200 < $m_a$ < 450 MeV via the decay $X\rightarrow纬纬$. This mass range is between the $蟺^0$ and $畏$ masses, which enables the use of the measured $畏$ production rate to obtain absolute bounds on the ALP production with reduced sensitivity to experimental luminosity and detection efficiency. We find no evidence for an ALP, consistent with previous searches in the quoted mass range, and present limits on the coupling on the scale of $O$(1 TeV). We further find that the ALP production limit we obtain is hindered by the peaking structure of the non-target-related dominant background in GlueX, which we treat by using data on $^4$He to estimate and subtract these backgrounds. We comment on how this search can be improved in a future higher-statistics dedicated measurement. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.06339v1-abstract-full').style.display = 'none'; document.getElementById('2308.06339v1-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 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.05565">arXiv:2306.05565</a> <span> [<a href="https://arxiv.org/pdf/2306.05565">pdf</a>, <a href="https://arxiv.org/format/2306.05565">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 class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2023.138309">10.1016/j.physletb.2023.138309 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of polarization transfer in the quasi-elastic $^{40}{\rm Ca}(\vec{e},e' \vec{p})$ process </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">T. Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Christmann%2C+M">M. Christmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Eckert%2C+P">P. Eckert</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Giusti%2C+C">C. Giusti</a>, <a href="/search/nucl-ex?searchtype=author&query=Geimer%2C+J">J. Geimer</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%BClker%2C+P">P. G眉lker</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">M. Hoek</a>, <a href="/search/nucl-ex?searchtype=author&query=Klag%2C+P">P. Klag</a>, <a href="/search/nucl-ex?searchtype=author&query=Lichtenstadt%2C+J">J. Lichtenstadt</a>, <a href="/search/nucl-ex?searchtype=author&query=Littich%2C+M">M. Littich</a>, <a href="/search/nucl-ex?searchtype=author&query=Manoussos%2C+T">T. Manoussos</a>, <a href="/search/nucl-ex?searchtype=author&query=Markus%2C+D">D. Markus</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+J">J. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=P%C3%A4tschke%2C+J">J. P盲tschke</a>, <a href="/search/nucl-ex?searchtype=author&query=Paul%2C+S+J">S. J. Paul</a>, <a href="/search/nucl-ex?searchtype=author&query=Plura%2C+E+P+S">E. Piasetzky S. Plura</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Po%C5%BEun%2C+M">M. Po啪un</a> , et al. (10 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="2306.05565v2-abstract-short" style="display: inline;"> Polarization transfer to a bound proton in polarized electron knock-out reactions, $\mathrm{A}(\vec{e},e^{\prime}\vec{p})$, is a powerful tool to look for in-medium modification of the bound proton. It requires comparison to calculations which consider the many-body effects accompanying the quasi-free process. We report here measured components $P_x^{\prime}$, $P_z^{\prime}$, and their ratio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.05565v2-abstract-full').style.display = 'inline'; document.getElementById('2306.05565v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.05565v2-abstract-full" style="display: none;"> Polarization transfer to a bound proton in polarized electron knock-out reactions, $\mathrm{A}(\vec{e},e^{\prime}\vec{p})$, is a powerful tool to look for in-medium modification of the bound proton. It requires comparison to calculations which consider the many-body effects accompanying the quasi-free process. We report here measured components $P_x^{\prime}$, $P_z^{\prime}$, and their ratio $P_x^{\prime}/P_z^{\prime}$, of polarization transfer to protons bound in $^{40}\mathrm{Ca}$, which is described well by the shell model and for which reliable calculations are available. While the calculations capture the essence of the data, our statistical precision allows us to observe deviations which cannot be explained by simple scaling, including by varying the proton electromagnetic form factor ratio $G_E/G_M$. We further explore the deviations of the ratio of the polarization transfer components from that of a free proton, $(P_x^{\prime}/P_z^{\prime})_{\rm A}/(P_x^{\prime}/P_z^{\prime})_{\rm H}$, and its dependence on the bound-proton virtuality. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.05565v2-abstract-full').style.display = 'none'; document.getElementById('2306.05565v2-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 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.13689">arXiv:2208.13689</a> <span> [<a href="https://arxiv.org/pdf/2208.13689">pdf</a>, <a href="https://arxiv.org/format/2208.13689">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 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.106.044610">10.1103/PhysRevC.106.044610 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Low-$Q^2$ elastic electron-proton scattering using a gas jet target </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+Y">Y. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Aulenbacher%2C+S">S. Aulenbacher</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+M">M. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Biroth%2C+M">M. Biroth</a>, <a href="/search/nucl-ex?searchtype=author&query=Bonaventura%2C+D">D. Bonaventura</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Brand%2C+P">P. Brand</a>, <a href="/search/nucl-ex?searchtype=author&query=Caiazza%2C+S">S. Caiazza</a>, <a href="/search/nucl-ex?searchtype=author&query=Christmann%2C+M">M. Christmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Cline%2C+E">E. Cline</a>, <a href="/search/nucl-ex?searchtype=author&query=Denig%2C+A">A. Denig</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Eckert%2C+P">P. Eckert</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Friscic%2C+I">I. Friscic</a>, <a href="/search/nucl-ex?searchtype=author&query=Gagneur%2C+S">S. Gagneur</a>, <a href="/search/nucl-ex?searchtype=author&query=Geimer%2C+J">J. Geimer</a>, <a href="/search/nucl-ex?searchtype=author&query=Grieser%2C+S">S. Grieser</a>, <a href="/search/nucl-ex?searchtype=author&query=Gulker%2C+P">P. Gulker</a>, <a href="/search/nucl-ex?searchtype=author&query=Herrmann%2C+P">P. Herrmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">M. Hoek</a> , et al. (32 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2208.13689v1-abstract-short" style="display: inline;"> In this paper, we describe an experiment measuring low-$Q^2$ elastic electron-proton scattering using a newly developed cryogenic supersonic gas jet target in the A1 three-spectrometer facility at the Mainz Microtron. We measured the proton electric form factor within the four-momentum transfer range of $0.01\le Q^2 \le 0.045(\text{GeV/c})^2$. The experiment showed consistent results with the exis… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.13689v1-abstract-full').style.display = 'inline'; document.getElementById('2208.13689v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.13689v1-abstract-full" style="display: none;"> In this paper, we describe an experiment measuring low-$Q^2$ elastic electron-proton scattering using a newly developed cryogenic supersonic gas jet target in the A1 three-spectrometer facility at the Mainz Microtron. We measured the proton electric form factor within the four-momentum transfer range of $0.01\le Q^2 \le 0.045(\text{GeV/c})^2$. The experiment showed consistent results with the existing measurements. The data we collected demonstrated the feasibility of the gas jet target and the potential of future scattering experiments using high-resolution spectrometers with this gas jet target. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.13689v1-abstract-full').style.display = 'none'; document.getElementById('2208.13689v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 8 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/2112.10582">arXiv:2112.10582</a> <span> [<a href="https://arxiv.org/pdf/2112.10582">pdf</a>, <a href="https://arxiv.org/format/2112.10582">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="Nuclear Theory">nucl-th</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the 伪-particle monopole transition form factor challenges theory: a low-energy puzzle for nuclear forces? </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">S. Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Bacca%2C+S">S. Bacca</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnea%2C+N">N. Barnea</a>, <a href="/search/nucl-ex?searchtype=author&query=Bericic%2C+J">J. Bericic</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Correa%2C+L">L. Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Friscic%2C+I">I. Friscic</a>, <a href="/search/nucl-ex?searchtype=author&query=Heilig%2C+M">M. Heilig</a>, <a href="/search/nucl-ex?searchtype=author&query=Herrmann%2C+P">P. Herrmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">M. Hoek</a>, <a href="/search/nucl-ex?searchtype=author&query=Klag%2C+P">P. Klag</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">T. Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Leidemann%2C+W">W. Leidemann</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovic%2C+M">M. Mihovilovic</a>, <a href="/search/nucl-ex?searchtype=author&query=Mueller%2C+J">J. Mueller</a>, <a href="/search/nucl-ex?searchtype=author&query=Mueller%2C+U">U. Mueller</a>, <a href="/search/nucl-ex?searchtype=author&query=Orlandini%2C+G">G. Orlandini</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=Schoth%2C+M">M. Schoth</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2112.10582v1-abstract-short" style="display: inline;"> We perform a systematic study of the $伪$-particle excitation from its ground state $0_1^+$ to the $0_2^+$ resonance. The so-called monopole transition form factor is investigated via an electron scattering experiment in a broad $Q^2$-range (from $0.5$ to $5.0$ fm$^{-2}$). The precision of the new data dramatically superseeds that of older sets of data, each covering only a portion of the $Q^2$-ran… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.10582v1-abstract-full').style.display = 'inline'; document.getElementById('2112.10582v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2112.10582v1-abstract-full" style="display: none;"> We perform a systematic study of the $伪$-particle excitation from its ground state $0_1^+$ to the $0_2^+$ resonance. The so-called monopole transition form factor is investigated via an electron scattering experiment in a broad $Q^2$-range (from $0.5$ to $5.0$ fm$^{-2}$). The precision of the new data dramatically superseeds that of older sets of data, each covering only a portion of the $Q^2$-range. The new data allow the determination of two coefficients in a low-momentum expansion leading to a new puzzle. By confronting experiment to state-of-the-art theoretical calculations we observe that modern nuclear forces, including those derived within chiral effective field theory which are well tested on a variety of observables, fail to reproduce the excitation of the $伪$-particle. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.10582v1-abstract-full').style.display = 'none'; document.getElementById('2112.10582v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.00763">arXiv:2107.00763</a> <span> [<a href="https://arxiv.org/pdf/2107.00763">pdf</a>, <a href="https://arxiv.org/format/2107.00763">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 class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2021.136798">10.1016/j.physletb.2021.136798 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of the electron-helicity asymmetry in the quasi-elastic ${\rm A}(\vec{e},e' p)$ process </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">Tim Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Paul%2C+S+J">Sebouh J. Paul</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">Patrick Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Arenh%C3%B6vel%2C+H">Hartmuth Arenh枚vel</a>, <a href="/search/nucl-ex?searchtype=author&query=Ashkenazi%2C+A">Adi Ashkenazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">Jure Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">Ralph B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">Damir Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Brecelj%2C+T">Tilen Brecelj</a>, <a href="/search/nucl-ex?searchtype=author&query=Cline%2C+E">Ethan Cline</a>, <a href="/search/nucl-ex?searchtype=author&query=Cohen%2C+E+O">Erez O. Cohen</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">Michael O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">Anselm Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">Ivica Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">Ronald Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Giusti%2C+C">Carlotta Giusti</a>, <a href="/search/nucl-ex?searchtype=author&query=Heilig%2C+M">Matthias Heilig</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">Matthias Hoek</a>, <a href="/search/nucl-ex?searchtype=author&query=Izraeli%2C+D">David Izraeli</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">Simon Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Klag%2C+P">Pascal Klag</a>, <a href="/search/nucl-ex?searchtype=author&query=Korover%2C+I">Igor Korover</a>, <a href="/search/nucl-ex?searchtype=author&query=Lichtenstadt%2C+J">Jechiel Lichtenstadt</a>, <a href="/search/nucl-ex?searchtype=author&query=Mardor%2C+I">Israel Mardor</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">Harald Merkel</a> , et al. (21 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="2107.00763v1-abstract-short" style="display: inline;"> We present measurements of the electron helicity asymmetry in quasi-elastic proton knockout from $^{2}$H and $^{12}$C nuclei by polarized electrons. This asymmetry depends on the fifth structure function, is antisymmetric with respect to the scattering plane, and vanishes in the absence of final-state interactions, and thus it provides a sensitive tool for their study. Our kinematics cover the ful… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.00763v1-abstract-full').style.display = 'inline'; document.getElementById('2107.00763v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.00763v1-abstract-full" style="display: none;"> We present measurements of the electron helicity asymmetry in quasi-elastic proton knockout from $^{2}$H and $^{12}$C nuclei by polarized electrons. This asymmetry depends on the fifth structure function, is antisymmetric with respect to the scattering plane, and vanishes in the absence of final-state interactions, and thus it provides a sensitive tool for their study. Our kinematics cover the full range in off-coplanarity angle $蠁_{pq}$, with a polar angle $胃_{pq}$ coverage up to about 8 degrees. The missing energy resolution enabled us to determine the asymmetries for knock-out resulting in different states of the residual $^{11}$B system. We find that the helicity asymmetry for $p$-shell knockout from $^{12}$C depends on the final state of the residual system and is relatively large (up to $\approx 0.16$), especially at low missing momentum. It is considerably smaller (up to $\approx 0.01$) for $s$-shell knockout from both $^{12}$C and $^2$H. The data for $^2$H are in very good agreement with theoretical calculations, while the predictions for $^{12}$C exhibit differences with respect to the data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.00763v1-abstract-full').style.display = 'none'; document.getElementById('2107.00763v1-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> 1 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2104.13503">arXiv:2104.13503</a> <span> [<a href="https://arxiv.org/pdf/2104.13503">pdf</a>, <a href="https://arxiv.org/format/2104.13503">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/10.1016/j.nima.2021.165668">10.1016/j.nima.2021.165668 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Operation and characterization of a windowless gas jet target in high-intensity electron beams </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=Aulenbacher%2C+S">S. Aulenbacher</a>, <a href="/search/nucl-ex?searchtype=author&query=Brand%2C+P">P. Brand</a>, <a href="/search/nucl-ex?searchtype=author&query=Littich%2C+M">M. Littich</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+Y">Y. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+M">M. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Biroth%2C+M">M. Biroth</a>, <a href="/search/nucl-ex?searchtype=author&query=Bonaventura%2C+D">D. Bonaventura</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Caiazza%2C+S">S. Caiazza</a>, <a href="/search/nucl-ex?searchtype=author&query=Christmann%2C+M">M. Christmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Cline%2C+E">E. Cline</a>, <a href="/search/nucl-ex?searchtype=author&query=Denig%2C+A">A. Denig</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Eckert%2C+P">P. Eckert</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Gagneur%2C+S">S. Gagneur</a>, <a href="/search/nucl-ex?searchtype=author&query=Geimer%2C+J">J. Geimer</a>, <a href="/search/nucl-ex?searchtype=author&query=Grieser%2C+S">S. Grieser</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%BClker%2C+P">P. G眉lker</a>, <a href="/search/nucl-ex?searchtype=author&query=Herrmann%2C+P">P. Herrmann</a> , et al. (32 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="2104.13503v2-abstract-short" style="display: inline;"> A cryogenic supersonic gas jet target was developed for the MAGIX experiment at the high-intensity electron accelerator MESA. It will be operated as an internal, windowless target in the energy-recovering recirculation arc of the accelerator with different target gases, e.g., hydrogen, deuterium, helium, oxygen, argon, or xenon. Detailed studies have been carried out at the existing A1 multi-spect… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.13503v2-abstract-full').style.display = 'inline'; document.getElementById('2104.13503v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.13503v2-abstract-full" style="display: none;"> A cryogenic supersonic gas jet target was developed for the MAGIX experiment at the high-intensity electron accelerator MESA. It will be operated as an internal, windowless target in the energy-recovering recirculation arc of the accelerator with different target gases, e.g., hydrogen, deuterium, helium, oxygen, argon, or xenon. Detailed studies have been carried out at the existing A1 multi-spectrometer facility at the electron accelerator MAMI. This paper focuses on the developed handling procedures and diagnostic tools, and on the performance of the gas jet target under beam conditions. Considering the special features of this type of target, it proves to be well suited for a new generation of high-precision electron scattering experiments at high-intensity electron accelerators. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.13503v2-abstract-full').style.display = 'none'; document.getElementById('2104.13503v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2101.06122">arXiv:2101.06122</a> <span> [<a href="https://arxiv.org/pdf/2101.06122">pdf</a>, <a href="https://arxiv.org/format/2101.06122">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/10.1016/j.nima.2021.165617">10.1016/j.nima.2021.165617 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Electron beam studies of light collection in a scintillating counter with embedded fibers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Lau%C3%9F%2C+M">M. Lau脽</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Aulenbacher%2C+S">S. Aulenbacher</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+M">M. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Beltschikow%2C+I">I. Beltschikow</a>, <a href="/search/nucl-ex?searchtype=author&query=Biroth%2C+M">M. Biroth</a>, <a href="/search/nucl-ex?searchtype=author&query=Brand%2C+P">P. Brand</a>, <a href="/search/nucl-ex?searchtype=author&query=Caiazza%2C+S">S. Caiazza</a>, <a href="/search/nucl-ex?searchtype=author&query=Christmann%2C+M">M. Christmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Corell%2C+O">O. Corell</a>, <a href="/search/nucl-ex?searchtype=author&query=Denig%2C+A">A. Denig</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Drexler%2C+P">P. Drexler</a>, <a href="/search/nucl-ex?searchtype=author&query=Geimer%2C+J">J. Geimer</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%BClker%2C+P">P. G眉lker</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">T. Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Lauth%2C+W">W. Lauth</a>, <a href="/search/nucl-ex?searchtype=author&query=Littich%2C+M">M. Littich</a>, <a href="/search/nucl-ex?searchtype=author&query=Lupberger%2C+M">M. Lupberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Lunkenheimer%2C+S">S. Lunkenheimer</a>, <a href="/search/nucl-ex?searchtype=author&query=Markus%2C+D">D. Markus</a>, <a href="/search/nucl-ex?searchtype=author&query=Mauch%2C+M">M. Mauch</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+J">J. M眉ller</a> , et al. (6 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="2101.06122v3-abstract-short" style="display: inline;"> The light collection of several fiber configurations embedded in a box-shaped plastic scintillating counter was studied by scanning with minimum ionizing electrons. The light was read out by silicon photomultipliers at both ends. The light yield produced by the 855-MeV beam of the Mainz Microtron showed a strong dependence on the transverse distance from the beam position to the fibers. The observ… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.06122v3-abstract-full').style.display = 'inline'; document.getElementById('2101.06122v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2101.06122v3-abstract-full" style="display: none;"> The light collection of several fiber configurations embedded in a box-shaped plastic scintillating counter was studied by scanning with minimum ionizing electrons. The light was read out by silicon photomultipliers at both ends. The light yield produced by the 855-MeV beam of the Mainz Microtron showed a strong dependence on the transverse distance from the beam position to the fibers. The observations were modeled by attributing the collection of indirect light inside of the counter and of direct light reaching a fiber to the total light yield. The light collection with fibers was compared to that of a scintillating counter without fibers. These studies were carried out within the development of plastic scintillating detectors as an active veto system for the DarkMESA electron beam-dump experiment that will search for light dark matter particles in the MeV mass range. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.06122v3-abstract-full').style.display = 'none'; document.getElementById('2101.06122v3-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 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">13 pages, 7 figures, 2 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2008.04209">arXiv:2008.04209</a> <span> [<a href="https://arxiv.org/pdf/2008.04209">pdf</a>, <a href="https://arxiv.org/format/2008.04209">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 class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2020.135984">10.1016/j.physletb.2020.135984 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of the induced polarization in the quasi-elastic $A(e,e'\vec p\,)$ process in non-coplanar kinematics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Paul%2C+S+J">Sebouh J. Paul</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">Tim Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Brecelj%2C+T">Tilen Brecelj</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">Patrick Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Arenh%C3%B6vel%2C+H">Hartmuth Arenh枚vel</a>, <a href="/search/nucl-ex?searchtype=author&query=Ashkenazi%2C+A">Adi Ashkenazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">Jure Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">Ralph B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">Damir Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Cline%2C+E">Ethan Cline</a>, <a href="/search/nucl-ex?searchtype=author&query=Cohen%2C+E+O">Erez O. Cohen</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">Luka Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">Michael O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">Anselm Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">Ivica Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">Ronald Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Giusti%2C+C">Carlotta Giusti</a>, <a href="/search/nucl-ex?searchtype=author&query=Heilig%2C+M">Matthias Heilig</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">Matthias Hoek</a>, <a href="/search/nucl-ex?searchtype=author&query=Izraeli%2C+D">David Izraeli</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">Simon Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Klag%2C+P">Pascal Klag</a>, <a href="/search/nucl-ex?searchtype=author&query=Kohl%2C+Y">Yvonne Kohl</a>, <a href="/search/nucl-ex?searchtype=author&query=Korover%2C+I">Igor Korover</a>, <a href="/search/nucl-ex?searchtype=author&query=Lichtenstadt%2C+J">Jechiel Lichtenstadt</a> , et al. (22 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="2008.04209v2-abstract-short" style="display: inline;"> We report measurements of the induced polarization $\vec P$ of protons knocked out from $^2$H and $^{12}$C via the $A(e,e'\vec p\,)$ reaction. We have studied the dependence of $\vec P$ on two kinematic variables: the missing momentum $p_{\rm miss}$ and the "off-coplanarity" angle $蠁_{pq}$ between the scattering and reaction planes. For the full 360$\degree$ range in $蠁_{pq}$, both the normal (… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.04209v2-abstract-full').style.display = 'inline'; document.getElementById('2008.04209v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2008.04209v2-abstract-full" style="display: none;"> We report measurements of the induced polarization $\vec P$ of protons knocked out from $^2$H and $^{12}$C via the $A(e,e'\vec p\,)$ reaction. We have studied the dependence of $\vec P$ on two kinematic variables: the missing momentum $p_{\rm miss}$ and the "off-coplanarity" angle $蠁_{pq}$ between the scattering and reaction planes. For the full 360$\degree$ range in $蠁_{pq}$, both the normal ($P_y$) and, for the first time, the transverse ($P_x$) components of the induced polarization were measured with respect to the coordinate system associated with the scattering plane. $P_x$ vanishes in coplanar kinematics, however in non-coplanar kinematics, it is on the same scale as $P_y$. We find that the dependence on $蠁_{pq}$ is sine-like for $P_x$ and cosine-like for $P_y$. For carbon, the magnitude of the induced polarization is especially large when protons are knocked out from the $p_{3/2}$ shell at very small $p_{\rm miss}$. For the deuteron, the induced polarization is near zero at small $|p_{\rm miss}|$, and its magnitude increases with $|p_{\rm miss}|$. For both nuclei such behavior is reproduced qualitatively by theoretical results, driven largely by the spin-orbit part of the final-state interactions. However, for both nuclei, sizeable discrepancies exist between experiment and theory. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.04209v2-abstract-full').style.display = 'none'; document.getElementById('2008.04209v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.14985">arXiv:2007.14985</a> <span> [<a href="https://arxiv.org/pdf/2007.14985">pdf</a>, <a href="https://arxiv.org/format/2007.14985">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 class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2020.135903">10.1016/j.physletb.2020.135903 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Comparison of recoil polarization in the $^{12}{\rm C}(\vec{e},{e}'\vec{p})$ process for protons extracted from $s$ and $p$ shell </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">T. Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Paul%2C+S">S. Paul</a>, <a href="/search/nucl-ex?searchtype=author&query=Brecelj%2C+T">T. Brecelj</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Cohen%2C+E+O">E. O. Cohen</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Giusti%2C+C">C. Giusti</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">M. Hoek</a>, <a href="/search/nucl-ex?searchtype=author&query=Izraeli%2C+D">D. Izraeli</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">S. Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kohl%2C+Y">Y. Kohl</a>, <a href="/search/nucl-ex?searchtype=author&query=Korover%2C+I">I. Korover</a>, <a href="/search/nucl-ex?searchtype=author&query=Lichtenstadt%2C+J">J. Lichtenstadt</a>, <a href="/search/nucl-ex?searchtype=author&query=Mardor%2C+I">I. Mardor</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+J">J. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Olivenboim%2C+M">M. Olivenboim</a>, <a href="/search/nucl-ex?searchtype=author&query=Piasetzky%2C+E">E. Piasetzky</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a> , et al. (7 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="2007.14985v2-abstract-short" style="display: inline;"> We present first measurements of the double ratio of the polarization transfer components $(P^{\prime}_{\!x} \!/ P^{\prime}_{\!z} )_p/ (P^{\prime}_{\!x} \!/ P^{\prime}_{\!z} )_s$ for knock-out protons from $s$ and $p$ shells in $^{12}{\rm C}$ measured by the $^{12}{\rm C}(\vec{e},{e}'\vec{p}\,)$ reaction in quasi-elastic kinematics. The data are compared to theoretical predictions in relativistic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.14985v2-abstract-full').style.display = 'inline'; document.getElementById('2007.14985v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.14985v2-abstract-full" style="display: none;"> We present first measurements of the double ratio of the polarization transfer components $(P^{\prime}_{\!x} \!/ P^{\prime}_{\!z} )_p/ (P^{\prime}_{\!x} \!/ P^{\prime}_{\!z} )_s$ for knock-out protons from $s$ and $p$ shells in $^{12}{\rm C}$ measured by the $^{12}{\rm C}(\vec{e},{e}'\vec{p}\,)$ reaction in quasi-elastic kinematics. The data are compared to theoretical predictions in relativistic distorted-wave impulse approximation. Our results show that differences between $s$- and $p$-shell protons, observed when compared at the same initial momentum (missing momentum) largely disappear when the comparison is done at the same proton virtuality. We observe no density-dependent medium modifications for protons from $s$ and $p$ shells with the same virtuality in spite of the large differences in the respective nuclear densities. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.14985v2-abstract-full').style.display = 'none'; document.getElementById('2007.14985v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2003.00464">arXiv:2003.00464</a> <span> [<a href="https://arxiv.org/pdf/2003.00464">pdf</a>, <a href="https://arxiv.org/format/2003.00464">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 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.101.064615">10.1103/PhysRevC.101.064615 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Polarization transfer to bound protons measured by quasi-elastic electron scattering on $^{12}$C </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Brecelj%2C+T">Tilen Brecelj</a>, <a href="/search/nucl-ex?searchtype=author&query=Paul%2C+S+J">Sebouh J. Paul</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">Tim Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">Patrick Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Ashkenazi%2C+A">Adi Ashkenazi</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">Ralph B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Cohen%2C+E+O">Erez O. Cohen</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">Michael O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">Anselm Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">Ronald Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Giusti%2C+C">Carlotta Giusti</a>, <a href="/search/nucl-ex?searchtype=author&query=Izraeli%2C+D">David Izraeli</a>, <a href="/search/nucl-ex?searchtype=author&query=Korover%2C+I">Igor Korover</a>, <a href="/search/nucl-ex?searchtype=author&query=Lichtenstadt%2C+J">Jechiel Lichtenstadt</a>, <a href="/search/nucl-ex?searchtype=author&query=Mardor%2C+I">Israel Mardor</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">Harald Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">Miha Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">Ulrich M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Olivenboim%2C+M">Mor Olivenboim</a>, <a href="/search/nucl-ex?searchtype=author&query=Piasetzky%2C+E">Eli Piasetzky</a>, <a href="/search/nucl-ex?searchtype=author&query=Ron%2C+G">Guy Ron</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">Bj枚rn S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=Schoth%2C+M">Matthias Schoth</a>, <a href="/search/nucl-ex?searchtype=author&query=Schulz%2C+F">Florian Schulz</a>, <a href="/search/nucl-ex?searchtype=author&query=Sfienti%2C+C">Concettina Sfienti</a> , et al. (7 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="2003.00464v2-abstract-short" style="display: inline;"> We report the measurements of the transverse ($P'x$) and longitudinal ($P'z$) components of the polarization transfer to a bound proton in carbon via the quasi-free $^{12}{\rm C}(\vec e,e'\vec p)$ reaction, over a wide range of missing momenta. We determine these polarization-transfers separately for protons knocked out from the $s$- and $p$-shells. The electron-beam polarization was measured to d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.00464v2-abstract-full').style.display = 'inline'; document.getElementById('2003.00464v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2003.00464v2-abstract-full" style="display: none;"> We report the measurements of the transverse ($P'x$) and longitudinal ($P'z$) components of the polarization transfer to a bound proton in carbon via the quasi-free $^{12}{\rm C}(\vec e,e'\vec p)$ reaction, over a wide range of missing momenta. We determine these polarization-transfers separately for protons knocked out from the $s$- and $p$-shells. The electron-beam polarization was measured to determine the individual components with systematic uncertainties which allow a detailed comparison with theoretical calculations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.00464v2-abstract-full').style.display = 'none'; document.getElementById('2003.00464v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 101, 064615 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.05594">arXiv:1905.05594</a> <span> [<a href="https://arxiv.org/pdf/1905.05594">pdf</a>, <a href="https://arxiv.org/format/1905.05594">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 class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2019.07.002">10.1016/j.physletb.2019.07.002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quasi-elastic polarization-transfer measurements on the deuteron in anti-parallel kinematics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Paul%2C+S+J">Sebouh J. Paul</a>, <a href="/search/nucl-ex?searchtype=author&query=Izraeli%2C+D">David Izraeli</a>, <a href="/search/nucl-ex?searchtype=author&query=Brecelj%2C+T">Tilen Brecelj</a>, <a href="/search/nucl-ex?searchtype=author&query=Yaron%2C+I">Israel Yaron</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">Patrick Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Arenh%C3%B6vel%2C+H">Hartmuth Arenh枚vel</a>, <a href="/search/nucl-ex?searchtype=author&query=Ashkenazi%2C+A">Adi Ashkenazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">Jure Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">Ralph B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">Damir Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Cline%2C+E">Ethan Cline</a>, <a href="/search/nucl-ex?searchtype=author&query=Cohen%2C+E+O">Erez O. Cohen</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">Luka Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">Michael O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">Ivica Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">Ronald Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Hamryszczak%2C+Z">Zaneta Hamryszczak</a>, <a href="/search/nucl-ex?searchtype=author&query=Heilig%2C+M">Matthias Heilig</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">Simon Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Klag%2C+P">Pascal Klag</a>, <a href="/search/nucl-ex?searchtype=author&query=Kohl%2C+Y">Yvonne Kohl</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">Tim Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Korover%2C+I">Igor Korover</a>, <a href="/search/nucl-ex?searchtype=author&query=Lichtenstadt%2C+J">Jechiel Lichtenstadt</a>, <a href="/search/nucl-ex?searchtype=author&query=Mardor%2C+I">Israel Mardor</a> , et al. (19 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="1905.05594v2-abstract-short" style="display: inline;"> We present measurements of the polarization-transfer components in the $^2$H$(\vec e,e'\vec p)$ reaction, covering a previously unexplored kinematic region with large positive (anti-parallel) missing momentum, $p_{\rm miss}$, up to 220 MeV$/c$, and $Q^2=0.65$ $({\rm GeV}/c)^2$. These measurements, performed at the Mainz Microtron (MAMI), were motivated by theoretical calculations which predict sma… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.05594v2-abstract-full').style.display = 'inline'; document.getElementById('1905.05594v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.05594v2-abstract-full" style="display: none;"> We present measurements of the polarization-transfer components in the $^2$H$(\vec e,e'\vec p)$ reaction, covering a previously unexplored kinematic region with large positive (anti-parallel) missing momentum, $p_{\rm miss}$, up to 220 MeV$/c$, and $Q^2=0.65$ $({\rm GeV}/c)^2$. These measurements, performed at the Mainz Microtron (MAMI), were motivated by theoretical calculations which predict small final-state interaction (FSI) effects in these kinematics, making them favorable for searching for medium modifications of bound nucleons in nuclei. We find in this kinematic region that the measured polarization-transfer components $P_x$ and $P_z$ and their ratio agree with the theoretical calculations, which use free-proton form factors. Using this, we establish upper limits on possible medium effects that modify the bound proton's form factor ratio $G_E/G_M$ at the level of a few percent. We also compare the measured polarization-transfer components and their ratio for $^2$H to those of a free (moving) proton. We find that the universal behavior of $^2$H, $^4$He and $^{12}$C in the double ratio $\frac{(P_x/P_z)^A}{(P_x/P_z)^{^1\rm H}}$ is maintained in the positive missing-momentum region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.05594v2-abstract-full').style.display = 'none'; document.getElementById('1905.05594v2-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 July, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B 795C (2019) 599-605" </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1901.10958">arXiv:1901.10958</a> <span> [<a href="https://arxiv.org/pdf/1901.10958">pdf</a>, <a href="https://arxiv.org/format/1901.10958">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 class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2019.04.004">10.1016/j.physletb.2019.04.004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The influence of Fermi motion on the comparison of the polarization transfer to a proton in elastic $\vec ep$ and quasi-elastic $\vec eA$ scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Paul%2C+S">S. Paul</a>, <a href="/search/nucl-ex?searchtype=author&query=Brecelj%2C+T">T. Brecelj</a>, <a href="/search/nucl-ex?searchtype=author&query=Arenh%C3%B6vel%2C+H">H. Arenh枚vel</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Ashkenazi%2C+A">A. Ashkenazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">J. Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Cohen%2C+E+O">E. O. Cohen</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">R. Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Izraeli%2C+D">D. Izraeli</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">T. Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Korover%2C+I">I. Korover</a>, <a href="/search/nucl-ex?searchtype=author&query=Lichtenstadt%2C+J">J. Lichtenstadt</a>, <a href="/search/nucl-ex?searchtype=author&query=Mardor%2C+I">I. Mardor</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Olivenboim%2C+M">M. Olivenboim</a>, <a href="/search/nucl-ex?searchtype=author&query=Piasetzky%2C+E">E. Piasetzky</a> , et al. (13 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1901.10958v3-abstract-short" style="display: inline;"> A comparison between polarization-transfer to a bound proton in quasi-free kinematics by the A$(\vec{e},e'\vec p)$ knockout reaction and that in elastic scattering off a free proton can provide information on the characteristics of the bound proton. In the past the reported measurements have been compared to those of a free proton with zero initial momentum. We introduce, for the first time, expre… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.10958v3-abstract-full').style.display = 'inline'; document.getElementById('1901.10958v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1901.10958v3-abstract-full" style="display: none;"> A comparison between polarization-transfer to a bound proton in quasi-free kinematics by the A$(\vec{e},e'\vec p)$ knockout reaction and that in elastic scattering off a free proton can provide information on the characteristics of the bound proton. In the past the reported measurements have been compared to those of a free proton with zero initial momentum. We introduce, for the first time, expressions for the polarization-transfer components when the proton is initially in motion and compare them to the $^2$H data measured at the Mainz Microtron (MAMI). We show the ratios of the transverse ($P_x$) and longitudinal ($P_z$) components of the polarization transfer in $^2\textrm{H}(\vec{e},e'\vec p)\textrm{n}$, to those of elastic scattering off a "moving proton", assuming the proton's initial (Fermi) momentum equals the negative missing momentum in the measured reaction. We found that the correction due to the proton motion is up to 20\% at high missing momentum. However the effect on the double ratio $\frac{(P_x/P_z)^A}{(P_x/P_z)^{^1\!\textrm{H}}}$ is largely canceled out, as shown for both $^2$H and $^{12}$C data. This implies that the kinematics is not the primary cause for the deviations between quasi-elastic and elastic scattering reported previously. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.10958v3-abstract-full').style.display = 'none'; document.getElementById('1901.10958v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B 792 (2019) 445-449 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1711.09680">arXiv:1711.09680</a> <span> [<a href="https://arxiv.org/pdf/1711.09680">pdf</a>, <a href="https://arxiv.org/format/1711.09680">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 class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2018.03.027">10.1016/j.physletb.2018.03.027 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of polarization-transfer to bound protons in carbon and its virtuality dependence </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=A1+Collaboration"> A1 Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Izraeli%2C+D">D. Izraeli</a>, <a href="/search/nucl-ex?searchtype=author&query=Brecelj%2C+T">T. Brecelj</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Ashkenazi%2C+A">A. Ashkenazi</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Cohen%2C+E+O">E. O. Cohen</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">R. Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolar%2C+T">T. Kolar</a>, <a href="/search/nucl-ex?searchtype=author&query=Korover%2C+I">I. Korover</a>, <a href="/search/nucl-ex?searchtype=author&query=Lichtenstadt%2C+J">J. Lichtenstadt</a>, <a href="/search/nucl-ex?searchtype=author&query=Mardor%2C+I">I. Mardor</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Olivenboim%2C+M">M. Olivenboim</a>, <a href="/search/nucl-ex?searchtype=author&query=Piasetzky%2C+E">E. Piasetzky</a>, <a href="/search/nucl-ex?searchtype=author&query=Ron%2C+G">G. Ron</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=Schoth%2C+M">M. Schoth</a>, <a href="/search/nucl-ex?searchtype=author&query=Sfienti%2C+C">C. Sfienti</a>, <a href="/search/nucl-ex?searchtype=author&query=%C5%A0irca%2C+S">S. 艩irca</a>, <a href="/search/nucl-ex?searchtype=author&query=%C5%A0tajner%2C+S">S. 艩tajner</a> , et al. (4 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="1711.09680v2-abstract-short" style="display: inline;"> We measured the ratio $P_{x}/P_{z}$ of the transverse to longitudinal components of polarization transferred from electrons to bound protons in $^{12}\mathrm{C}$ by the $^{12}\mathrm{C}(\vec{e},e'\vec{p})$ process at the Mainz Microtron (MAMI). We observed consistent deviations from unity of this ratio normalized to the free-proton ratio,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.09680v2-abstract-full').style.display = 'inline'; document.getElementById('1711.09680v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1711.09680v2-abstract-full" style="display: none;"> We measured the ratio $P_{x}/P_{z}$ of the transverse to longitudinal components of polarization transferred from electrons to bound protons in $^{12}\mathrm{C}$ by the $^{12}\mathrm{C}(\vec{e},e'\vec{p})$ process at the Mainz Microtron (MAMI). We observed consistent deviations from unity of this ratio normalized to the free-proton ratio, $(P_{x}/P_{z})_{^{12}\mathrm{C}}/(P_{x}/P_{z})_{^{1}\mathrm{H}}$, for both $s$- and $p$-shell knocked out protons, even though they are embedded in averaged local densities that differ by about a factor of two. The dependence of the double ratio on proton virtuality is similar to the one for knocked out protons from $^{2}\mathrm{H}$ and $^{4}\mathrm{He}$, suggesting a universal behavior. It further implies no dependence on average local nuclear density. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.09680v2-abstract-full').style.display = 'none'; document.getElementById('1711.09680v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 February, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 November, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2017. </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