6533b7dbfe1ef96bd12714a2

RESEARCH PRODUCT

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

Ilkka HeleniusIlkka HeleniusMarina WaltWerner Vogelsang

subject

particle interactionsParticle physicsHEAVY FLAVOR PRODUCTIONProtonPREDICTIONSFOS: Physical sciencesPartonhiukkasfysiikkaInelastic scatteringPROTON114 Physical sciences01 natural sciencesUNCERTAINTIESnucleus-neutrino interactionsCROSS-SECTIONSSet (abstract data type)High Energy Physics - Phenomenology (hep-ph)DEPENDENCEquantum chromodynamics0103 physical sciencesnonperturbative effects in field theory010306 general physicsNuclear Experimentquantum field theoryperturbation theoryDEEP-INELASTIC-SCATTERINGQuantum chromodynamicsPhysics010308 nuclear & particles physics3-LOOP SPLITTING FUNCTIONSnucleon distributionSTRUCTURE-FUNCTION RATIOSDeep inelastic scatteringEVOLUTIONHigh Energy Physics - PhenomenologyDistribution functionQCD in nuclear reactionsnuclear matterHigh Energy Physics::ExperimentNeutrinoydinfysiikka

description

We present new sets of nuclear parton distribution functions (nPDFs) at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO). 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.

yearjournalcountryeditionlanguage
2019-11-22
https://dx.doi.org/10.48550/arxiv.1908.03355