A1 Journal article (refereed)
Can we fit nuclear PDFs with the high-x CLAS data? (2020)

Paukkunen, H., & Zurita, P. (2020). Can we fit nuclear PDFs with the high-x CLAS data?. European Physical Journal C, 80(5), Article 381. https://doi.org/10.1140/epjc/s10052-020-7971-1

JYU authors or editors

Publication details

All authors or editorsPaukkunen, Hannu; Zurita, Pia

Journal or seriesEuropean Physical Journal C



Publication year2020


Issue number5

Article number381


Publication countryGermany

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessOpen Access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/69052

Web address of parallel published publication (pre-print)https://arxiv.org/abs/2003.02195


Nuclear parton distribution functions (nuclear PDFs) are non-perturbative objects that encode the partonic behaviour of bound nucleons. To avoid potential higher-twist contributions, the data probing the high-x end of nuclear PDFs are sometimes left out from the global extractions despite their potential to constrain the fit parameters. In the present work we focus on the kinematic corner covered by the new high-x data measured by the CLAS/JLab collaboration. By using the Hessian re-weighting technique, we are able to quantitatively test the compatibility of these data with globally analyzed nuclear PDFs and explore the expected impact on the valence-quark distributions at high x. We find that the data are in a good agreement with the EPPS16 and nCTEQ15 nuclear PDFs whereas they disagree with TuJu19. The implications on flavour separation, higher-twist contributions and models of EMC effect are discussed.

Keywordsnuclear physicsparticle physics

Free keywordsnuclear parton distribution functions (nuclear PDFs)

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Ministry reportingYes

Reporting Year2020

JUFO rating2

Last updated on 2024-03-04 at 21:35