2018/12/31 by Richard D. Ball, Emanuele R. Nocera, Rosalyn L. Pearson · 25 citations
Physics and Astronomy · #Distribution (mathematics) #Distribution function #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Parton #Proton #Quantum Chromodynamics and Particle Interactions #Scattering #Strangeness #Valence (chemistry) #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-019-6793-5
published in The European Physical Journal C 79(3) (Springer Science+Business Media) · 34 pages, 15 figures, 4 tables - version accepted for publication in Eur. Phys. J. C
openalex publication_date 2019/03/01 · arxiv created 2019/03/23 · arxiv updated 2019/05/01 · openalex created_date 2019/07/30 · openalex updated_date 2026/08/05
We show how theoretical uncertainties due to nuclear effects may be incorporated into global fits of proton parton distribution functions (PDFs) that include deep-inelastic scattering and Drell–Yan data on nuclear targets. We specifically consider the CHORUS, NuTeV and E605 data included in the NNPDF3.1 fit, which used Pb, Fe and Cu targets, respectively. We show that the additional uncertainty in the proton PDFs due to nuclear effects is small, as expected, and in particular that the effect on the d/u ratio, the total strangeness s+s , and the strange valence distribution s-s is negligible.