Open-source QCD analysis of nuclear parton distribution functions at NLO and NNLO

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http://hdl.handle.net/10138/310231

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Walt , M , Helenius , I & Vogelsang , W 2019 , ' Open-source QCD analysis of nuclear parton distribution functions at NLO and NNLO ' , Physical Review D , vol. 100 , no. 9 , 096015 . https://doi.org/10.1103/PhysRevD.100.096015

Title: Open-source QCD analysis of nuclear parton distribution functions at NLO and NNLO
Author: Walt, Marina; Helenius, Ilkka; Vogelsang, Werner
Contributor: University of Helsinki, Helsinki Institute of Physics
Date: 2019-11-22
Language: eng
Number of pages: 22
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/310231
Abstract: We present new sets of nuclear parton distribution functions (nPDFs) at next-to-leading order and next-to-next-to-leading order. Our analyses are based on deeply inelastic scattering data with charged-lepton and neutrino beams on nuclear targets. In addition, a set of proton baseline PDFs is fitted within the same framework with the same theoretical assumptions. The results of this global QCD analysis are compared to existing nPDF sets and to the fitted cross sections. Also, the uncertainties resulting from the limited constraining power of the included experimental data are presented. The published work is based on an open-source tool, xFitter, which has been modified to be applicable also for a nuclear PDF analysis. The required extensions of the code are discussed as well.
Subject: DEEP-INELASTIC-SCATTERING
3-LOOP SPLITTING FUNCTIONS
STRUCTURE-FUNCTION RATIOS
HEAVY FLAVOR PRODUCTION
CROSS-SECTIONS
DEPENDENCE
EVOLUTION
PROTON
UNCERTAINTIES
PREDICTIONS
114 Physical sciences
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