Nuclear Uncertainties in the Determination of Proton PDFs

Apr 9, 2019, 2:20 PM
Rettorato - Aula Magna

Rettorato - Aula Magna

Via Verdi, 8 Turin
Parallel Session Talk WG1: Structure Functions and Parton Densities WG1:Structure Functions and Parton Densities


Rosalyn Pearson (Edinburgh University)


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
$\bar{d}/\bar{u}$ ratio, the total strangeness $s+\bar{s}$, and the
strange valence distribution $s-\bar{s}$ is negligible.

Primary authors

Richard David Ball (Edinburgh University) Emanuele Roberto Nocera (The University of Edinburgh) Rosalyn Pearson (Edinburgh University)

Presentation materials