Nuclear PDF for neutrino and charged lepton data

TL;DR

This paper compares two analyses of nuclear parton distribution functions (NPDFs) derived from neutrino and charged lepton deep inelastic scattering data, highlighting differences in nuclear correction factors and their implications for proton PDFs.

Contribution

It provides a comparative study of NPDFs obtained from neutrino and charged lepton DIS data at next-to-leading order, emphasizing the differences in nuclear correction factors.

Findings

Charged-lepton and neutrino DIS data yield different nuclear correction factors.

Comparison shows discrepancies between NPDFs from different data types.

Results inform better modeling of nuclear effects in proton PDFs.

Abstract

Neutrino Deep Inelastic Scattering on nuclei is an essential process to constrain the strange quark parton distribution functions in the proton. The critical component on the way to using the neutrino DIS data in a proton PDF analysis is understanding the nuclear effects in parton distribution functions. We parametrize these effects by nuclear parton distribution functions. Here we compare results from two analysis of NPDF both done at next-to-leading order in QCD. The first uses neutral current charged-lepton lA Deeply Inelastic Scattering and Drell-Yan data for several nuclear targets and the second uses neutrino-nucleon DIS data. We compare the nuclear corrections factors F_2^Fe/F_2^D for the charged-lepton data with other results from the literature. In particular, we compare and contrast fits based upon the charged-lepton DIS data with those using neutrino-nucleon DIS data.