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

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arxiv 1908.03355 v2 pith:YQEBVW2V submitted 2019-08-09 hep-ph

Marina Walt , Ilkka Helenius , Werner Vogelsang This is my paper · ORCID
classification hep-ph
keywords nuclearanalysisdatadistributionfittedfunctionsnnloopen-source
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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.

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  1. Automated NLO calculations for asymmetric hadron-hadron collisions in MadGraph5_aMC@NLO

    hep-ph 2025-01 accept novelty 6.0 of 10

    A public extension of MadGraph5_aMC@NLO now computes automated NLO QCD cross sections for asymmetric hadron-hadron collisions, validated against MCFM and JAM.

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