B-flavour anomalies in $b\rightarrow sll$ and $b\rightarrow cl\nu_l$ transitions at LHCb

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This property is called Lepton Flavour Universality (LFU). In models beyond the SM, LFU can be naturally violated with new physics particles that couple differently with respect to the lepton generations. Over the last few years, several hints of LFU violation have been reported in both $b\rightarrow c$ and $b\rightarrow s$ transitions. An overview of the measurements performed by LHCb during Run 1 ($\sqrt{s}=7-8~\mathrm{TeV}$) and part of Run 2 ($\sqrt{s}= 13~\mathrm{TeV}$) is reported. Gioventu, Alessandra" /> <meta name="keywords" content="CERN Document Server, WebSearch, LHCb Preprints" /> <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="SISSA : B-flavour anomalies in $b\rightarrow sll$ and $b\rightarrow cl\nu_l$ transitions at LHCb" name="citation_title" /> <meta content="Gioventu, Alessandra" name="citation_author" /> <meta content="SISSA" name="citation_publisher" /> <meta content="10.22323/1.352.0252" name="citation_doi" /> <meta content="PoS" name="citation_journal_title" /> <meta content="DIS2019" name="citation_volume" /> <meta content="252" name="citation_firstpage" /> <meta content="2019" name="citation_publication_date" /> <meta name="citation_online_date" content="2019/10/16"> <meta content="10.22323/1.352.0252" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2693740/files/PoS(DIS2019)252.pdf" />  <meta content="SISSA" property="og:title" /> <meta content="B-flavour anomalies in $b\rightarrow sll$ and $b\rightarrow cl\nu_l$ transitions at LHCb" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2693740" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="SISSA" property="og:description" /> <meta content="In the Standard Model (SM) of particle physics, the muon and the tau particles are simply heavier copies of the electron, coupling with gauge bosons independently of their generation. This property is called Lepton Flavour Universality (LFU). In models beyond the SM, LFU can be naturally violated with new physics particles that couple differently with respect to the lepton generations. Over the last few years, several hints of LFU violation have been reported in both $b\rightarrow c$ and $b\rightarrow s$ transitions. An overview of the measurements performed by LHCb during Run 1 ($\sqrt{s}=7-8~\mathrm{TeV}$) and part of Run 2 ($\sqrt{s}= 13~\mathrm{TeV}$) is reported." property="og:description" />  <meta content="summary" name="twitter:card" /> <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="LHCb32Preprints search" lang="ca">  <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=ca&referer=https%3A//cds.cern.ch/record/2693740/%3Fln%3Dca" 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=ca">Cerca</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=ca">Lliura</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=ca">Ajuda</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=ca">Personalitza</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=ca">Les vostres alertes</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=ca">Els vostres cistells</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=ca">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=ca">Les vostres cerques</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=ca" class="navtrail">Pàgina inicial</a> > <a href="/collection/LHCb%20Collection?ln=ca" class="navtrail">LHCb Collection</a> > <a href="/collection/LHCb%20Preprints?ln=ca" class="navtrail">LHCb Preprints</a> > B-flavour anomalies in $b\rightarrow sll$ and $b\rightarrow cl\nu_l$ transitions at LHCb </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/2693740/?ln=ca">Informació: </a></li><li class=""><a href="/record/2693740/references?ln=ca">Referències </a></li><li class=""><a href="/record/2693740/comments?ln=ca">Discussió (0) </a></li><li class=""><a href="/record/2693740/files?ln=ca">Fitxers </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="2693740"></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">  <a style="color:#fff;text-decoration:none" href="https://cds.cern.ch/collection/Published%20Articles">Published Articles</a> </td> </tr> <script type="text/javascript"> $( document ).ready(function() { $('.showAuthor').on('click', function() { var author = '<p>' + $(this).data('name') + '</p>'; var affiliation = $(this).data('affiliation') + '</br>'; var contribution = $(this).data('contribution') + '</br>'; $.magnificPopup.open({ items: { src: '<div id="ovelary-mathjax" class="overlay-white oc-content overlay-white-500">' + author + affiliation + contribution + '</div>', type: 'inline' }, callbacks: { open: function() { var div = document.getElementById("overlay-mathjax") MathJax.Hub.Queue(["Typeset", MathJax.Hub, div]); }, } }) }) }); </script> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>B-flavour anomalies in $b\rightarrow sll$ and $b\rightarrow cl\nu_l$ transitions at LHCb</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=Gioventu%2C%20Alessandra&ln=ca">Gioventu, Alessandra</a> (Santiago de Compostela U.)</td></tr> <tr><td class="formatRecordLabel"> Collaboration </td><td style="padding-left:5px;">LHCb</td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">SISSA, 2019</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">6</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.22323/1.352.0252"><i>PoS</i> DIS2019 (2019) 252</a> </a></td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/2668733">The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects</a>, Turin, Italy, 8 - 12 Apr 2019, pp.252</td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.22323/1.352.0252" title="DOI" target="_blank">10.22323/1.352.0252</a> <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=LHCb&f=693__e">LHCb</a></td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">In the Standard Model (SM) of particle physics, the muon and the tau particles are simply heavier copies of the electron, coupling with gauge bosons independently of their generation. This property is called Lepton Flavour Universality (LFU). In models beyond the SM, LFU can be naturally violated with new physics particles that couple differently with respect to the lepton generations. Over the last few years, several hints of LFU violation have been reported in both $b\rightarrow c$ and $b\rightarrow s$ transitions. An overview of the measurements performed by LHCb during Run 1 ($\sqrt{s}=7-8 \mathrm{TeV}$) and part of Run 2 ($\sqrt{s}= 13 \mathrm{TeV}$) is reported.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">publication: © 2019-2024 Author(s) (License: <a href="https://creativecommons.org/licenses/by-nc-nd/4.0/">CC-BY-NC-ND-4.0</a>)</td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/1756473">Inspire</a> <small> </small> <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">Torna a la cerca</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> Registre creat el 2019-10-16, darrera modificació el 2022-08-10</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=ca&p=recid%3A2693740&rm=wrd" class="moreinfo">Registres semblants</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">Text complet:</small> <br /><a href="/record/2693740/files/PoS(DIS2019)252.pdf"><img style="border:none" src="/img/file-icon-text-34x48.gif" alt="Descarregar el text complet" /><br />PDF</a><br /></div> </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=ca&recid=2693740">Afegeix-lo al cistell personal</a></li> <li>Anomena i desa <a style="text-decoration:underline;font-weight:normal" href="/record/2693740/export/hx?ln=ca">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2693740/export/hm?ln=ca">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2693740/export/xm?ln=ca">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2693740/export/xd?ln=ca">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2693740/export/xe?ln=ca">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2693740/export/xn?ln=ca">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2693740/export/xw?ln=ca">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:2693740/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2693740', addEmail: true, title: "B-flavour anomalies in $b\\rightarrow sll$ and $b\\rightarrow cl\\nu_l$ transitions at LHCb", description: "In the Standard Model (SM) of particle physics, the muon and the tau particles are simply heavier copies of the electron, coupling with gauge bosons independently of their generation. 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B-flavour anomalies in $b\rightarrow sll$ and $b\rightarrow cl\nu_l$ transitions at LHCb - CERN Document Server