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#== H1Fitter Info == #== H1Fitter Info == {{attachment:logo.png||align="left",width="100"}}

{{attachment:gluon.png||align="right",width="200"}}

{{{#!sidebar
#== News ==
#* this
#* and this
#
}}}


= Since 2016 HERAFitter project has been renamed to xFitter =
<!> please check xfitter.org
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HERAFitter is a set of PDF fitting tools initialy developed jointly by the H1 and ZEUS collaborations for determination of the parton density functions and currently extended to LHC experiments and theory groups. Independent developers are also encouraged to add their contribution to the package. The HERAFitter codes were used to obtain the HERAPDF sets. Proton parton distribution functions (PDFs) are essential for precision physics at the LHC and other hadron colliders. The determination of the PDFs is a complex endeavor involving several physics process. The main process is the lepton proton deep-inelastic scattering (DIS), with data collected by the HERA ep collider covering a large kinematic phase space needed to extract PDFs. Further processes (fixed target DIS, ppbar collisions etc.) provide additional constraining powers for flavour separation. In particular, the precise measurements obtained or to come from LHC will continue to improve the knowledge of the PDF.

The HERAFitter project is an open source QCD fit framework ready to extract PDFs and assess the impact of new data which we would like to present here. The framework includes modules allowing for a various theoretical and methodological options, capable to fit a large number of relevant data sets from HERA, Tevatron and LHC. This framework is already used in many analyses at the LHC.

##HERAFitter is a set of PDF fitting tools initialy developed jointly by the H1 and ZEUS collaborations for determination of the parton density functions and currently extended to LHC experiments and theory groups. Independent developers are also ##encouraged to add their contribution to the package. The HERAFitter codes were used to obtain the HERAPDF sets.
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(!) New HERAFitter release is available! The HERAFitter releases can be accessed [[/downloads|HERE]] upon registration. Everyone is free to register [[/HERAFitterInternal/DownloadPage|.]]
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==== Registration ====
To register, please log in (upper right corner) by creating an account (firstnamelastname, example: JohnSmith) and send your request and login name to <<MailTo(herafitter-help AT SPAMFREE desy DOT de)>>.
 . ''' HERAFitter-1.1.1 release is publicly available.''' <<BR>> All the HERAFitter releases can be accessed [[HERAFitter/DownloadPage|HERE]] [[HERAFitter/downloads|.]]
 . Description: http://arxiv.org/abs/1410.4412
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##==== Subscription ====
##To register, please log in (upper right corner) by creating an account (firstnamelastname, example: JohnSmith) and send your request and login name to <<MailTo(herafitter-help AT SPAMFREE desy DOT de)>>.
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 * [[/HERAFitterMeetings|User's Meetings]]: monthly meetings to enhance communication between users and developers (open access)
 * [[/HERAFitterInternal/FitForumMeetings|Developer's Meeting]]: technical weekly meetings to ensure communication among developers (restricted access)
 * [[/HERAFitterInternal/SGMeetings|Steering Group's Meeting]] (restricted access)

{{attachment:team.png||align="right",width="280"}}

* HERAFItter Meeting in Heidelberg: https://indico.cern.ch/event/382006/
 * [[HERAFitter
/HERAFitterMeetings|User's Meetings]]:  meetings to enhance communication between users and developers (open access)
 * [[HERAFitter/HERAFitterInternal/FitForumMeetings|Developer's Meeting]]: technical weekly meetings to ensure communication among developers (restricted access)
 * [[HERAFitter/HERAFitterInternal/SGMeetings|Steering Group's Meeting]] (restricted access)

== HERAFitter representation ==
 * [[HERAFitter/results|List of results]]
 * [[HERAFitter/HERAFitterTalks|List of collected talks]]
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 . [[/HERAFitterInternal|Internal Developments]]  * [[HERAFitter/HERAFitterInternal|Internal Developments]]
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 . Steering Group is composed of:
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 * '''Release coordinator:''' Sasha Glazov
 * '''Contact Persons:''' Klaus Rabbertz (CMS), Bogdan Malaescu (ATLAS), Olaf Behnke (ZEUS), Cristi Diaconu (H1), Ronan McNulty (LHCb)
 * '''Steering Group: '''Voica Radescu, Ringaile Placakyte, Sasha Glazov, Amanda Cooper-Sarkar, , Gavin Salam (theory), Klaus Rabbertz (CMS), Bogdan Malaescu (ATLAS), Ronan McNulty (LHCb), Olaf Behnke (ZEUS), Cristi Diaconu (H1, chair)
 * '''Librarians:''' authors/developers of individual modules
 * '''Getting help''': Send email to <<MailTo(herafitter-help AT SPAMFREE desy DOT de)>>
 * '''Release coordinator''' (revision of the release candidates): Sasha Glazov
 * '''Librarian''' (continuous revision/development of the main code and doxygen): Hayk Pirumov
 * '''Contact Persons:''' Cristi Diaconu (H1),Klaus Rabbertz (CMS), Bogdan Malaescu (ATLAS), Olaf Behnke (ZEUS), Ronan McNulty (LHCb), Gavin Salam (theory)
 * ''' DESY IT Contact: ''' Yves Kemp, Bogdan Lobodzinsky
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== Getting help ==
 . Send email to <<MailTo(herafitter-help AT SPAMFREE desy DOT de)>>
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## '''Steering Group: '''Voica Radescu[[/HERAFitterPDFs|,]] Ringaile Placakyte, Hayk Pirumov, Sasha Glazov, Amanda Cooper-Sarkar, Gavin Salam (theory), Klaus Rabbertz (CMS), Bogdan Malaescu (ATLAS), Ronan McNulty (LHCb), Olaf Behnke (ZEUS), Cristi Diaconu (H1, chair)

gluon.png

Since 2016 HERAFitter project has been renamed to xFitter

<!> please check xfitter.org

Welcome to HERAFitter

Proton parton distribution functions (PDFs) are essential for precision physics at the LHC and other hadron colliders. The determination of the PDFs is a complex endeavor involving several physics process. The main process is the lepton proton deep-inelastic scattering (DIS), with data collected by the HERA ep collider covering a large kinematic phase space needed to extract PDFs. Further processes (fixed target DIS, ppbar collisions etc.) provide additional constraining powers for flavour separation. In particular, the precise measurements obtained or to come from LHC will continue to improve the knowledge of the PDF.

The HERAFitter project is an open source QCD fit framework ready to extract PDFs and assess the impact of new data which we would like to present here. The framework includes modules allowing for a various theoretical and methodological options, capable to fit a large number of relevant data sets from HERA, Tevatron and LHC. This framework is already used in many analyses at the LHC.

Downloads of HERAFitter software package

HERAFitter Meetings

team.png

HERAFitter representation

Developers Info (restricted to developers)

Organisation

  • Steering Group is composed of:
  • Conveners: Voica Radescu, Ringaile Placakyte, Amanda Cooper-Sarkar

  • Release coordinator (revision of the release candidates): Sasha Glazov

  • Librarian (continuous revision/development of the main code and doxygen): Hayk Pirumov

  • Contact Persons: Cristi Diaconu (H1),Klaus Rabbertz (CMS), Bogdan Malaescu (ATLAS), Olaf Behnke (ZEUS), Ronan McNulty (LHCb), Gavin Salam (theory)

  • DESY IT Contact: Yves Kemp, Bogdan Lobodzinsky

Getting help

  • Send email to <herafitter-help AT SPAMFREE desy DOT de>

HERAFitter: HERAFitter (last edited 2016-07-27 09:52:25 by RingailePlacakyte)