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It encodes results from a wide range of experimental measurements in lepton-proton deep inelastic scattering and proton-proton (proton-antiproton) collisions at hadron colliders. These are complemented with a variety of theoretical options for calculating PDF-dependent cross section predictions corresponding to the measurements. The framework covers a large number of the existing methods and schemes used for PDF determination. The data and theoretical predictions are brought together through numerous methodological options for carrying out PDF fits and plotting tools to help visualise the results. While primarily based on the approach of collinear factorisation, HERAFitter also provides facilities for fits of dipole models and transverse-momentum dependent PDFs. The package can be used to study the impact of new precise measurements from hadron colliders. This paper describes the general structure of HERAFitter and its wide choice of options. HERAFitter is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton and for many different kinds of analyses in Quantum Chromodynamics (QCD). It encodes results from a wide range of experimental measurements in lepton-proton deep inelastic scattering and proton-proton (proton-antiproton) collisions at hadron colliders. These are complemented with a variety of theoretical options for calculating PDF-dependent cross section predictions corresponding to the measurements. The framework covers a large number of the existing methods and schemes used for PDF determination. The data and theoretical predictions are brought together through numerous methodological options for carrying out PDF fits and plotting tools to help visualise the results. While primarily based on the approach of collinear factorisation, HERAFitter also provides facilities for fits of dipole models and transverse-momentum dependent PDFs. The package can be used to study the impact of new precise measurements from hadron colliders. This paper describes the general structure of HERAFitter and its wide choice of options. Alekhin, S.; Behnke, O.; Belov, P.; Borroni, S.; Botje, M.; Britzger, D.; Camarda, S.; Cooper-Sarkar, A.M.; Daum, K.; Diaconu, C.; Feltesse, J.; Gizhko, A.; Glazov, A.; Guffanti, A.; Guzzi, M.; Hautmann, F.; Jung, A.; Jung, H.; Kolesnikov, V.; Kowalski, H.; Kuprash, O.; Kusina, A.; Levonian, S.; Lipka, K.; Lobodzinski, B.; Lohwasser, K.; Luszczak, A.; Malaescu, B.; McNulty, R.; Myronenko, V.; Naumann-Emme, S.; Nowak, K.; Olness, F.; Perez, E.; Pirumov, H.; Plačakytė, R.; Rabbertz, K.; Radescu, V.; Sadykov, R.; Salam, G.P.; Sapronov, A.; Schöning, A.; Schörner-Sadenius, T.; Shushkevich, S.; Slominski, W.; Spiesberger, H.; Starovoitov, P.; Sutton, M.; Tomaszewska, J.; Turkot, O.; Vargas, A.; Watt, G.; Wichmann, K." /> <meta name="keywords" content="CERN Document Server, WebSearch, CERN Document Server" /> <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="HERAFitter, Open Source QCD Fit Project" name="citation_title" /> <meta content="Alekhin, S." name="citation_author" /> <meta content="Hautmann, F." name="citation_author" /> <meta content="Luszczak, A." name="citation_author" /> <meta content="Glazov, A." name="citation_author" /> <meta content="Britzger, D." name="citation_author" /> <meta content="Lohwasser, K." name="citation_author" /> <meta content="Radescu, V." name="citation_author" /> <meta content="Starovoitov, P." name="citation_author" /> <meta content="Cooper-Sarkar, A.M." name="citation_author" /> <meta content="Levonian, S." name="citation_author" /> <meta content="Kusina, A." name="citation_author" /> <meta content="Gizhko, A." name="citation_author" /> <meta content="Behnke, O." name="citation_author" /> <meta content="Lobodzinski, B." name="citation_author" /> <meta content="Watt, G." name="citation_author" /> <meta content="Naumann-Emme, S." name="citation_author" /> <meta content="Myronenko, V." name="citation_author" /> <meta content="Feltesse, J." name="citation_author" /> <meta content="Tomaszewska, J." name="citation_author" /> <meta content="Daum, K." name="citation_author" /> <meta content="Belov, P." name="citation_author" /> <meta content="Olness, F." name="citation_author" /> <meta content="Jung, A." name="citation_author" /> <meta content="Guffanti, A." name="citation_author" /> <meta content="Spiesberger, H." name="citation_author" /> <meta content="Wichmann, K." name="citation_author" /> <meta content="Nowak, K." name="citation_author" /> <meta content="Turkot, O." name="citation_author" /> <meta content="Kuprash, O." name="citation_author" /> <meta content="Sapronov, A." name="citation_author" /> <meta content="Camarda, S." name="citation_author" /> <meta content="Diaconu, C." name="citation_author" /> <meta content="Perez, E." name="citation_author" /> <meta content="Malaescu, B." name="citation_author" /> <meta content="Guzzi, M." name="citation_author" /> <meta content="Schörner-Sadenius, T." name="citation_author" /> <meta content="Salam, G.P." name="citation_author" /> <meta content="Lipka, K." name="citation_author" /> <meta content="Sutton, M." name="citation_author" /> <meta content="Schöning, A." name="citation_author" /> <meta content="Rabbertz, K." name="citation_author" /> <meta content="McNulty, R." name="citation_author" /> <meta content="Pirumov, H." name="citation_author" /> <meta content="Shushkevich, S." name="citation_author" /> <meta content="Plačakytė, R." name="citation_author" /> <meta content="Botje, M." name="citation_author" /> <meta content="Slominski, W." name="citation_author" /> <meta content="Kowalski, H." name="citation_author" /> <meta content="Jung, H." name="citation_author" /> <meta content="Borroni, S." name="citation_author" /> <meta content="Sadykov, R." name="citation_author" /> <meta content="Vargas, A." name="citation_author" /> <meta content="Kolesnikov, V." name="citation_author" /> <meta content="10.1140/epjc/s10052-015-3480-z" name="citation_doi" /> <meta content="Eur. 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This paper describes the general structure of HERAFitter and its wide choice of options." property="og:description" />  <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server 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/1955754" 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> > HERAFitter, Open Source QCD Fit Project </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/1955754/?ln=en">Information </a></li><li class=""><a href="/record/1955754/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="1955754"></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">  Article </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"> Report number </td><td style="padding-left:5px;"><a href="http://arxiv.org/abs/arXiv:1410.4412">arXiv:1410.4412</a> ; DESY-14-188 ; DESY-REPORT-14-188 ; FERMILAB-PUB-14-603-CMS ; DESY REPORT 14-188</td></tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>HERAFitter, Open Source QCD Fit Project</b></td></tr> <tr><td class="formatRecordLabel" style="vertical-align:top;">Related title</td><td style="padding-left:5px; ">HERAFitter, Open Source QCD Fit Project<br/></td></tr> <tr><td class="formatRecordLabel"><span style="white-space:nowrap;"> Author(s) </span> </td><td style="padding-left:5px;"> <script type="text/javascript"> function toggle_authors_visibility(){ var more = document.getElementById('more'); var link = document.getElementById('link'); var extension = document.getElementById('extension'); if (more.style.display=='none'){ more.style.display = ''; extension.style.display = 'none'; link.innerHTML = "Hide" } else { more.style.display = 'none'; extension.style.display = ''; link.innerHTML = "Show all 53 authors" } link.style.color = "rgb(204,0,0);" } function set_up(){ var extension = document.getElementById('extension'); extension.innerHTML = ""; toggle_authors_visibility(); } </script> <a name="show_hide" /><a href="https://cds.cern.ch/search?f=author&p=Alekhin%2C%20S.&ln=en">Alekhin, S.</a> (DESY, Zeuthen ; Serpukhov, IHEP) ; <a href="https://cds.cern.ch/search?f=author&p=Behnke%2C%20O.&ln=en">Behnke, O.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Belov%2C%20P.&ln=en">Belov, P.</a> (DESY ; St. Petersburg State U.) ; <a href="https://cds.cern.ch/search?f=author&p=Borroni%2C%20S.&ln=en">Borroni, S.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Botje%2C%20M.&ln=en">Botje, M.</a> (NIKHEF, Amsterdam) ; <a href="https://cds.cern.ch/search?f=author&p=Britzger%2C%20D.&ln=en">Britzger, D.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Camarda%2C%20S.&ln=en">Camarda, S.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Cooper-Sarkar%2C%20A.M.&ln=en">Cooper-Sarkar, A.M.</a> (Oxford U.) ; <a href="https://cds.cern.ch/search?f=author&p=Daum%2C%20K.&ln=en">Daum, K.</a> (Wuppertal U.) ; <a href="https://cds.cern.ch/search?f=author&p=Diaconu%2C%20C.&ln=en">Diaconu, C.</a> (Marseille, CPPM)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Feltesse%2C%20J.&ln=en">Feltesse, J.</a> (IRFU, Saclay) ; <a href="https://cds.cern.ch/search?f=author&p=Gizhko%2C%20A.&ln=en">Gizhko, A.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Glazov%2C%20A.&ln=en">Glazov, A.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Guffanti%2C%20A.&ln=en">Guffanti, A.</a> (Bohr Inst.) ; <a href="https://cds.cern.ch/search?f=author&p=Guzzi%2C%20M.&ln=en">Guzzi, M.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Hautmann%2C%20F.&ln=en">Hautmann, F.</a> (Southampton U. ; Rutherford ; Oxford U., Theor. Phys.) ; <a href="https://cds.cern.ch/search?f=author&p=Jung%2C%20A.&ln=en">Jung, A.</a> (Fermilab) ; <a href="https://cds.cern.ch/search?f=author&p=Jung%2C%20H.&ln=en">Jung, H.</a> (DESY ; Antwerp U.) ; <a href="https://cds.cern.ch/search?f=author&p=Kolesnikov%2C%20V.&ln=en">Kolesnikov, V.</a> (Dubna, JINR) ; <a href="https://cds.cern.ch/search?f=author&p=Kowalski%2C%20H.&ln=en">Kowalski, H.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Kuprash%2C%20O.&ln=en">Kuprash, O.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Kusina%2C%20A.&ln=en">Kusina, A.</a> (Southern Methodist U.) ; <a href="https://cds.cern.ch/search?f=author&p=Levonian%2C%20S.&ln=en">Levonian, S.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Lipka%2C%20K.&ln=en">Lipka, K.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Lobodzinski%2C%20B.&ln=en">Lobodzinski, B.</a> (Munich, Max Planck Inst.) ; <a href="https://cds.cern.ch/search?f=author&p=Lohwasser%2C%20K.&ln=en">Lohwasser, K.</a> (DESY, Zeuthen ; DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Luszczak%2C%20A.&ln=en">Luszczak, A.</a> (Cracow Tech. U.) ; <a href="https://cds.cern.ch/search?f=author&p=Malaescu%2C%20B.&ln=en">Malaescu, B.</a> (Paris U., VI-VII) ; <a href="https://cds.cern.ch/search?f=author&p=McNulty%2C%20R.&ln=en">McNulty, R.</a> (University Coll., Dublin) ; <a href="https://cds.cern.ch/search?f=author&p=Myronenko%2C%20V.&ln=en">Myronenko, V.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Naumann-Emme%2C%20S.&ln=en">Naumann-Emme, S.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Nowak%2C%20K.&ln=en">Nowak, K.</a> (DESY ; Oxford U.) ; <a href="https://cds.cern.ch/search?f=author&p=Olness%2C%20F.&ln=en">Olness, F.</a> (Southern Methodist U.) ; <a href="https://cds.cern.ch/search?f=author&p=Perez%2C%20E.&ln=en">Perez, E.</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Pirumov%2C%20H.&ln=en">Pirumov, H.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Pla%C4%8Dakyt%C4%97%2C%20R.&ln=en">Plačakytė, R.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Rabbertz%2C%20K.&ln=en">Rabbertz, K.</a> (KIT, Karlsruhe, EKP) ; <a href="https://cds.cern.ch/search?f=author&p=Radescu%2C%20V.&ln=en">Radescu, V.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Sadykov%2C%20R.&ln=en">Sadykov, R.</a> (Dubna, JINR) ; <a href="https://cds.cern.ch/search?f=author&p=Salam%2C%20G.P.&ln=en">Salam, G.P.</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Sapronov%2C%20A.&ln=en">Sapronov, A.</a> (Dubna, JINR) ; <a href="https://cds.cern.ch/search?f=author&p=Sch%C3%B6ning%2C%20A.&ln=en">Schöning, A.</a> (Heidelberg U.) ; <a href="https://cds.cern.ch/search?f=author&p=Sch%C3%B6rner-Sadenius%2C%20T.&ln=en">Schörner-Sadenius, T.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Shushkevich%2C%20S.&ln=en">Shushkevich, S.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Slominski%2C%20W.&ln=en">Slominski, W.</a> (Jagiellonian U.) ; <a href="https://cds.cern.ch/search?f=author&p=Spiesberger%2C%20H.&ln=en">Spiesberger, H.</a> (Mainz U., Inst. Phys.) ; <a href="https://cds.cern.ch/search?f=author&p=Starovoitov%2C%20P.&ln=en">Starovoitov, P.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Sutton%2C%20M.&ln=en">Sutton, M.</a> (Sussex U.) ; <a href="https://cds.cern.ch/search?f=author&p=Tomaszewska%2C%20J.&ln=en">Tomaszewska, J.</a> (Warsaw U. of Tech.) ; <a href="https://cds.cern.ch/search?f=author&p=Turkot%2C%20O.&ln=en">Turkot, O.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Vargas%2C%20A.&ln=en">Vargas, A.</a> (DESY) ; <a href="https://cds.cern.ch/search?f=author&p=Watt%2C%20G.&ln=en">Watt, G.</a> (Durham U., IPPP) ; <a href="https://cds.cern.ch/search?f=author&p=Wichmann%2C%20K.&ln=en">Wichmann, K.</a> (DESY)</span> <span id="extension"></span> <small><i><a id="link" href="#" onclick="toggle_authors_visibility()" style="color:rgb(204,0,0);"></a></i></small><script type="text/javascript">set_up()</script></td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2015-07-02</td></tr> <tr><td class="formatRecordLabel"> Imprint </td><td style="padding-left:5px;">16 Oct 2014</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">17</td></tr> <tr><td class="formatRecordLabel"> Note </td><td style="padding-left:5px;">Comments: 18 pages, 8 figures<br />18 pages, 7 figures</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1140/epjc/s10052-015-3480-z"><i>Eur. Phys. J. C</i> 75 (2015) 304</a> </a></td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1140/epjc/s10052-015-3480-z" title="DOI" target="_blank">10.1140/epjc/s10052-015-3480-z</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Particle Physics - Phenomenology</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">HERAFitter is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton and for many different kinds of analyses in Quantum Chromodynamics (QCD). It encodes results from a wide range of experimental measurements in lepton-proton deep inelastic scattering and proton-proton (proton-antiproton) collisions at hadron colliders. These are complemented with a variety of theoretical options for calculating PDF-dependent cross section predictions corresponding to the measurements. The framework covers a large number of the existing methods and schemes used for PDF determination. The data and theoretical predictions are brought together through numerous methodological options for carrying out PDF fits and plotting tools to help visualise the results. While primarily based on the approach of collinear factorisation, HERAFitter also provides facilities for fits of dipole models and transverse-momentum dependent PDFs. The package can be used to study the impact of new precise measurements from hadron colliders. This paper describes the general structure of HERAFitter and its wide choice of options.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;"><a href="http://arxiv.org/licenses/nonexclusive-distrib/1.0/">arXiv nonexclusive-distrib. 1.0</a><br/>publication: © 2015-2025 The Author(s) (License: <a href="http://creativecommons.org/licenses/by/4.0/">CC-BY-4.0</a>), sponsored by <a href="http://scoap3.org">SCOAP³</a></td></tr> </table> <br /><div style="max-width:1024px;margin:auto"><div style="overflow-x:auto;display:inline;width:100%;"><a href="/record/1955754/plots#0"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/1955754/files/hera1.png" title=" Distributions of valence ($xu_v$, $xd_v$), sea ($xS$) and the gluon ($xg$) PDFs in HERAPDF1.0~\cite{h1zeus:2009wt}. The gluon and the sea distributions are scaled down by a factor of 20. The experimental, model and parametrisation uncertainties are shown as coloured bands." width="200px"/></a> <a href="/record/1955754/plots#1"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/1955754/files/heraacot.png" title=" Distributions of valence ($xu_v$, $xd_v$), sea ($xS$) and the gluon ($xg$) PDFs in HERAPDF1.0~\cite{h1zeus:2009wt} with their total uncertainties at the scale of $Q^2 = 10\ \GeV^2$ obtained using the TR$^\prime$ scheme and compared to the PDFs obtained with the ACOT-Full scheme using the $k$-factor technique (red). The gluon and the sea distributions are scaled down by a factor of 20." width="200px"/></a> <a href="/record/1955754/plots#2"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/1955754/files/atlas.png" title=" The strange antiquark distribution versus $x$ for the ATLAS epWZ free $\bar s$ NNLO fit \cite{atlas:strange} (magenta band) compared to predictions from NNPDF2.1 (blue hatched) and CT10 (green hatched) at $Q^2 = 1.9\ \GeV^2$. The ATLAS fit was performed using a $k$-factor approach for NNLO corrections." width="200px"/></a> <a href='/record/1955754/plots'>Show more plots</a></div></div><br /> <br/>Corresponding record in: <a href="http://inspirehep.net/record/1322585">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">Back to search</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> Record created 2014-10-17, last modified 2023-03-22</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%3A1955754&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">Article from SCOAP3:</small> <br /><a href="/record/1955754/files/scoap.pdf"><img style="border:none" src="/img/file-icon-text-12x16.gif" alt="Download fulltext"/>PDF</a><br /></div><div><small class="detailedRecordActions">Fulltext:</small> <br /><em>arXiv:1410.4412</em> - <a href="/record/1955754/files/arXiv:1410.4412.pdf"><img style="border:none" src="/img/file-icon-text-12x16.gif" alt="Download fulltext"/>PDF</a><br /><em>fermilab-pub-14-603-cms</em> - <a href="/record/1955754/files/fermilab-pub-14-603-cms.pdf"><img style="border:none" src="/img/file-icon-text-12x16.gif" alt="Download fulltext"/>PDF</a><br /></div><div><small class="detailedRecordActions">Springer Open Access article:</small> <br /><a href="/record/1955754/files/s10052-015-3480-z.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="http://lss.fnal.gov/archive/2014/pub/fermilab-pub-14-603-cms.pdf"><img style="border:none" src="/img/file-icon-text-12x16.gif" alt="Download fulltext"/>Fermilab Library Server (fulltext available)</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=1955754">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/1955754/export/hx?ln=en">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/1955754/export/hm?ln=en">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/1955754/export/xm?ln=en">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/1955754/export/xd?ln=en">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/1955754/export/xe?ln=en">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/1955754/export/xn?ln=en">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/1955754/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/1410.4412/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/1955754', addEmail: true, title: "HERAFitter, Open Source QCD Fit Project", description: "HERAFitter is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton and for many different kinds of analyses in Quantum Chromodynamics (QCD). 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