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These particles are expected to move significantly slower than the speed of light and should be identifiable by their high transverse momenta and anomalously large specific ionisation losses measured in the pixel detector. This information can be used in combination with the speed measured by Time-of-Flight in the ATLAS calorimeters. Results are presented covering particles with lifetimes down to O(3) ns and with masses ranging from 200 GeV to 3 TeV. Interpretations for pair-production of R-hadrons and staus in scenarios of supersymmetry compatible with these particles being long-lived are presented, with mass limits extending beyond those from previous searches in broad ranges of lifetime. Ressegotti, Martina" /> <meta name="keywords" content="LLP, long lived particles, ToF, Time of Flight, ionization energy loss, dE/dx, heavy, charged, SUSY" /> <script type="text/javascript" src="https://cds.cern.ch/js/jquery.min.js"></script>  <link rel="stylesheet" href="https://cds.cern.ch/img/webnews.css" type="text/css" />  <script type="text/javascript" src="https://cds.cern.ch/js/webnews.js?v=20131009"></script> <meta property="fb:app_id" content="137353533001720"/> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$']], processEscapes: true}, showProcessingMessages: false, messageStyle: "none" }); </script> <script src="/MathJax/MathJax.js?config=TeX-AMS_CHTML" type="text/javascript"> </script>  <meta content="Search for heavy, long-lived, charged particles with large ionisation energy loss and time-of-flight with the ATLAS experiment" name="citation_title" /> <meta content="Ressegotti, Martina" name="citation_author" /> <meta content="2023/09/25" name="citation_publication_date" /> <meta name="citation_online_date" content="2023/09/25"> <meta content="ATL-PHYS-SLIDE-2023-520" name="citation_technical_report_number" /> <meta content="ATL-COM-PHYS-2023-697" name="citation_technical_report_institution" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2872246/files/ATL-PHYS-SLIDE-2023-520.pdf" />  <meta content="Search for heavy, long-lived, charged particles with large ionisation energy loss and time-of-flight with the ATLAS experiment" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2872246" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="We present a new search for hypothetical massive, charged, long-lived particles with the ATLAS detector at the LHC using an integrated luminosity of 140 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV. These particles are expected to move significantly slower than the speed of light and should be identifiable by their high transverse momenta and anomalously large specific ionisation losses measured in the pixel detector. This information can be used in combination with the speed measured by Time-of-Flight in the ATLAS calorimeters. Results are presented covering particles with lifetimes down to O(3) ns and with masses ranging from 200 GeV to 3 TeV. Interpretations for pair-production of R-hadrons and staus in scenarios of supersymmetry compatible with these particles being long-lived are presented, with mass limits extending beyond those from previous searches in broad ranges of lifetime." property="og:description" />  <meta content="summary" name="twitter:card" /> <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="ATLAS32Preprints search" lang="en">  <div id="cern-toolbar"> <h1><a href="http://cern.ch" title="CERN">CERN <span>Accelerating science</span></a></h1> <ul> <li class="cern-accountlinks"><a class="cern-account" href="https://cds.cern.ch/youraccount/login?ln=en&referer=https%3A//cds.cern.ch/record/2872246%3Fln%3Den" title="Sign in to your CERN account">Sign in</a></li> <li><a class="cern-directory" href="http://cern.ch/directory" title="Search CERN resources and browse the directory">Directory</a></li> </ul> </div>   <div role="banner" class="clearfix" id="header"> <div class="header-inner inner"> <hgroup class="clearfix"> <h2 id="site-name"> <a rel="home" title="Home" href="/"><span>CERN Document Server</span></a> </h2> <h3 id="site-slogan">Access articles, reports and multimedia content in HEP</h3> </hgroup> <div role="navigation" id="main-navigation" class="cdsmenu"> <h2 class="element-invisible">Main menu</h2><ul class="links inline clearfix"> <li class="menu-386 first active-trail"><a class="active-trail" href="https://cds.cern.ch/?ln=en">Search</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=en">Submit</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=en">Help</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=en">Personalize</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=en">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=en">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=en">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=en">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=en" class="navtrail">Home</a> > <a href="/collection/CERN%20Experiments?ln=en" class="navtrail">CERN Experiments</a> > <a href="/collection/LHC%20Experiments?ln=en" class="navtrail">LHC Experiments</a> > <a href="/collection/ATLAS?ln=en" class="navtrail">ATLAS</a> > <a href="/collection/ATLAS%20Preprints?ln=en" class="navtrail">ATLAS Preprints</a> > Search for heavy, long-lived, charged particles with large ionisation energy loss and time-of-flight with the ATLAS experiment </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <div class="detailedrecordbox"> <div class="detailedrecordtabs"> <div> <ul class="detailedrecordtabs"><li class="on first"><a href="/record/2872246/?ln=en">Information </a></li><li class=""><a href="/record/2872246/comments?ln=en">Discussion (0) </a></li><li class=""><a href="/record/2872246/files?ln=en">Files </a></li></ul> <div id="tabsSpacer" style="clear:both;height:0px"> </div></div> </div> <div class="detailedrecordboxcontent"> <div class="top-left-folded"></div> <div class="top-right-folded"></div> <div class="inside">  <abbr class="unapi-id" title="2872246"></abbr> <style type="text/css">  </style> <table class="formatRecordTableFullWidth" > <tr> <td class="formatRecordHeader" style="background-image: url('https://cds.cern.ch/img/journals.jpg');" colspan="2">  ATLAS Slides </td> </tr> <tr><td class="formatRecordLabel"> Report number </td><td style="padding-left:5px;">ATL-PHYS-SLIDE-2023-520</td></tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Search for heavy, long-lived, charged particles with large ionisation energy loss and time-of-flight with the ATLAS experiment</b></td></tr>  <tr><td class="formatRecordLabel"> <span style="white-space:nowrap;">Author(s)</span> </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?f=author&p=Ressegotti%2C%20Martina&ln=en">Ressegotti, Martina</a> (INFN e Universita Genova (IT))</td></tr> <tr><td class="formatRecordLabel"> Corporate <span style="white-space:nowrap;">author(s)</span> </td><td style="padding-left:5px;">The ATLAS collaboration</td></tr> <tr><td class="formatRecordLabel"> Collaboration </td><td style="padding-left:5px;">ATLAS Collaboration</td></tr> <tr><td class="formatRecordLabel"> Submitted to </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/2867205">EPS-HEP2023</a>, Hamburg, Germany, De, 20 - 25 Aug 2023, pp.ATL-PHYS-SLIDE-2023-520</td></tr> <tr><td class="formatRecordLabel"> Submitted by </td><td style="padding-left:5px;"><a href="mailto:martina.ressegotti@cern.ch">martina.ressegotti@cern.ch</a> on 25 Sep 2023</td></tr> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Particle Physics - Experiment</td></tr> <tr><td class="formatRecordLabel"> Accelerator/Facility, Experiment </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?p=CERN%20LHC&f=693__a">CERN LHC</a> ; <a href="https://cds.cern.ch/search?p=ATLAS&f=693__e">ATLAS</a></td></tr> <tr><td class="formatRecordLabel"> Free keywords </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?f=keyword&p=LLP&ln=en">LLP</a> ; <a href="https://cds.cern.ch/search?f=keyword&p=long%20lived%20particles&ln=en">long lived particles</a> ; <a href="https://cds.cern.ch/search?f=keyword&p=ToF&ln=en">ToF</a> ; <a href="https://cds.cern.ch/search?f=keyword&p=Time%20of%20Flight&ln=en">Time of Flight</a> ; <a href="https://cds.cern.ch/search?f=keyword&p=ionization%20energy%20loss&ln=en">ionization energy loss</a> ; <a href="https://cds.cern.ch/search?f=keyword&p=dE/dx&ln=en">dE/dx</a> ; <a href="https://cds.cern.ch/search?f=keyword&p=heavy&ln=en">heavy</a> ; <a href="https://cds.cern.ch/search?f=keyword&p=charged&ln=en">charged</a> ; <a href="https://cds.cern.ch/search?f=keyword&p=SUSY&ln=en">SUSY</a></td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">We present a new search for hypothetical massive, charged, long-lived particles with the ATLAS detector at the LHC using an integrated luminosity of 140 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV. These particles are expected to move significantly slower than the speed of light and should be identifiable by their high transverse momenta and anomalously large specific ionisation losses measured in the pixel detector. This information can be used in combination with the speed measured by Time-of-Flight in the ATLAS calorimeters. Results are presented covering particles with lifetimes down to O(3) ns and with masses ranging from 200 GeV to 3 TeV. Interpretations for pair-production of R-hadrons and staus in scenarios of supersymmetry compatible with these particles being long-lived are presented, with mass limits extending beyond those from previous searches in broad ranges of lifetime.</td></tr> </table> <br/> <br/><br/><div align="right"><div style="padding-bottom:2px;padding-top:30px;"><span class="moreinfo" style="margin-right:10px;"> <a href="" class="moreinfo">Back to search</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> Record created 2023-09-25, last modified 2024-05-28</div></div> <div class="bottom-right-folded" style="text-align:right;padding-bottom:2px;"> <span class="moreinfo" style="margin-right:10px;"><a href="/search?ln=en&p=recid%3A2872246&rm=wrd" class="moreinfo">Similar records</a></span></div> </div> </div> </div> <br/> <br /> <div class="detailedrecordminipanel"> <div class="top-left"></div><div class="top-right"></div> <div class="inside"> <div id="detailedrecordminipanelfile" style="width:33%;float:left;text-align:center;margin-top:0"> <div><small class="detailedRecordActions">Fulltext:</small> <br /><a href="/record/2872246/files/ATL-PHYS-SLIDE-2023-520.pdf"><img style="border:none" src="/img/file-icon-text-12x16.gif" alt="Download fulltext"/>PDF</a><br /></div><small class="detailedRecordActions">External link:</small><br /><small><a href="https://cds.cern.ch/record/2867201"><img style="border:none" src="/img/file-icon-text-12x16.gif" alt="Download fulltext"/>Original Communication (restricted to ATLAS)</a></small> </div> <div id="detailedrecordminipanelreview" style="width:30%;float:left;text-align:center"> </div> <div id="detailedrecordminipanelactions" style="width:36%;float:right;text-align:right;"> <ul class="detailedrecordactions"> <li><a href="/yourbaskets/add?ln=en&recid=2872246">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/2872246/export/hx?ln=en">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2872246/export/hm?ln=en">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2872246/export/xm?ln=en">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2872246/export/xd?ln=en">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2872246/export/xe?ln=en">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2872246/export/xn?ln=en">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2872246/export/xw?ln=en">RefWorks</a> </li> </ul> <div style='padding-left: 13px;'>  <div id="bookmark"></div> <div id="bookmark_sciencewise"></div> <style type="text/css"> #bookmark_sciencewise, #bookmark {float: left;} #bookmark_sciencewise li {padding: 2px; width: 25px;} #bookmark_sciencewise ul, #bookmark ul {list-style-image: none;} </style> <script type="text/javascript" src="/js/jquery.bookmark.min.js"></script> <style type="text/css">@import "/css/jquery.bookmark.css";</style> <script type="text/javascript">// <![CDATA[ $.bookmark.addSite('sciencewise', 'ScienceWise.info', 'https://cds.cern.ch/img/sciencewise.png', 'en', 'bookmark', 'http://sciencewise.info/bookmarks/cds:2872246/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2872246', addEmail: true, title: "Search for heavy, long-lived, charged particles with large ionisation energy loss and time-of-flight with the ATLAS experiment", description: "We present a new search for hypothetical massive, charged, long-lived particles with the ATLAS detector at the LHC using an integrated luminosity of 140 fb$^{-1}$ of proton-proton collisions at $\\sqrt{s}$ = 13 TeV. 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