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PoS(DIS2017)203

The xFitter Project

V. Bertone, M. Botje, D. Britzger, S. Camarda, A. Cooper-Sarkar, F. Giuli, A. Glazov, A. Luszczak, F. Olness, R. Placakyte, V. Radescu, W. Slominski, O. Zenaiev

in XXV International Workshop on Deep-Inelastic Scattering and Related Subjects

Contribution: pdf

Abstract

xFitter is an open-source package that provides a framework for the
determination of the parton distribution functions (PDFs) of the
proton for many different kinds of analyses in Quantum Chromodynamics
(QCD). xFitter version 2.0.0 has recently been released, and offers
an expanded set of tools and options. It incorporates experimental
data from a wide range of experiments including fixed-target,
Tevatron, HERA, and LHC. xFitter can analyze this data up to
next-to-next-to-leading-order (NNLO) in perturbation theory with a
variety of theoretical calculations including numerous methodological
options for carrying out PDF fits and plotting tools which help
visualize the results. While primarily based on the collinear
factorization foundation, xFitter also provides facilities for fits of
dipole models and transverse-momentum dependent (TMD) PDFs. The
package can be used to study the impact of new precise measurements
from hadron colliders, and also assess the impact of future colliders.
This paper provides a brief overview of xFitter with emphasis of the
new version 2.0.0 features.