A1 Journal article (refereed)
NNLO nuclear parton distribution functions with electroweak-boson production data from the LHC (2022)

Helenius, I., Walt, M., & Vogelsang, W. (2022). NNLO nuclear parton distribution functions with electroweak-boson production data from the LHC. Physical Review D, 105(9), Article 094031. https://doi.org/10.1103/PhysRevD.105.094031

JYU authors or editors

Publication details

All authors or editorsHelenius, Ilkka; Walt, Marina; Vogelsang, Werner

Journal or seriesPhysical Review D



Publication year2022

Publication date24/05/2022


Issue number9

Article number094031

PublisherAmerican Physical Society (APS)

Publication countryUnited States

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/82552

Publication is parallel publishedhttps://arxiv.org/abs/2112.11904


We present new sets of nuclear parton distribution functions (nPDFs) at next-to-leading order and next-to-next-to-leading order in perturbative QCD. Our analyses are based on deeply inelastic scattering data with charged-lepton and neutrino beams on nuclear targets, and experimental data from measurements of W±,Z boson production in p+Pb collisions at the LHC. In addition, a set of proton baseline PDFs is fitted within the same framework and with the same theoretical assumptions. The results of our global QCD analysis are compared to existing nPDF sets and to the previous nPDF set TUJU19, which was based on deep-inelastic scattering data only. Our work is performed using an open-source tool, xFitter, and the required extensions of the code are discussed as well. We find good agreement with the data included in the fit and a lower value for χ2/Ndp when performing the fit at next-to-next-to-leading order. We apply the resulting nuclear PDFs to electroweak boson production in Pb+Pb collisions at the LHC and compare the results to the most recent data from ATLAS and CMS.

Keywordsnuclear physicsparticle physicsquantum chromodynamics

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Ministry reportingYes

Reporting Year2022

JUFO rating2

Last updated on 2024-30-04 at 19:47