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| (!) ''' xFitter-2.0.0 release is publicly available.''' <<BR>> All the xFitter releases can be accessed [[xFitter/DownloadPage|HERE]]. <<BR>> All the former (HERAFitter) releases can be accessed [[https://www.herafitter.org/HERAFitter/HERAFitter/DownloadPage|HERE]]. <<BR>> Description: http://arxiv.org/abs/1410.4412 | ## (!) ''' xFitter-2.0.1 release is publicly available. <<BR>> All the xFitter releases can be accessed [[xFitter/DownloadPage|HERE]] including (!) '''2.2.0 !FutureFreeze''' release <<BR>> All the former (HERAFitter) releases can be accessed [[https://www.herafitter.org/HERAFitter/HERAFitter/DownloadPage|HERE]]. <<BR>> Description: http://arxiv.org/abs/1410.4412 |
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| (!) [[https://indico.desy.de/indico/event/22011/| xFitter Workshop in Minsk ]] 18-20 March 2019 | {{attachment:team.jpg||align="right",width="280"}} ## (!) [[https://indico.desy.de/indico/event/22011/| xFitter Workshop in Minsk ]] 18-20 March 2019 ## (!) (!) [[https://indico.desy.de/indico/event/25055/| xFitter Workshop at DESY ]] 26-28 February ## (!) [[https://indico.ijclab.in2p3.fr/event/7847/ | xFitter Workshop at Orsay ]] 9-11 March 2022 (!) [[https://indico.cern.ch/event/1273738/ | xFitter Workshop at CERN ]] 2-5 May 2023 |
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| * (!) [[attachment:Snowmass.pdf|Snowmass contrubution]] | |
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| . Send email to <<MailTo(xfitter-help AT SPAMFREE desy DOT de)>> | (!) See our help forum https://groups.google.com/forum/#!forum/xfitter-users In case of questions or problems, please post a message there (requires a google account) or send it via email xfitter-users@googlegroups.com (no account required) |
Welcome to xFitter (former 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 xFitter project is an open source QCD fit framework ready to extract PDFs and assess the impact of new data. 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 xFitter software package
All the xFitter releases can be accessed HERE including 
2.2.0 FutureFreeze release
All the former (HERAFitter) releases can be accessed HERE.
Description: http://arxiv.org/abs/1410.4412
xFitter Meetings
- xFitter Workshop at CERN 2-5 May 2023
User's Meetings: meetings to enhance communication between users and developers (open access)
Developer's Meeting: technical weekly meetings to ensure communication among developers (restricted access)
Steering Group's Meeting (restricted access)
xFitter representation
Developers Info (restricted to developers)
Organisation
Release coordinator/Librarian (revision of the release candidates): Sasha Glazov, Oleksandr Zenaiev
DESY IT Contact: Yves Kemp
Getting help
See our help forum https://groups.google.com/forum/#!forum/xfitter-users
In case of questions or problems, please post a message there (requires a google account) or send it via email xfitter-users@googlegroups.com (no account required)