nCTEQ15HIX -- Extending nPDF Analyses into the High-$x$, Low $Q^2$ Region
Abstract
We use the nCTEQ analysis framework to investigate nuclear Parton Distribution Functions (nPDFs) in the region of large x and intermediate-to-low , with special attention to recent JLab Deep Inelastic Scattering data on nuclear targets. This data lies in a region which is often excluded by and cuts in global nPDF analyses. As we relax these cuts, we enter a new kinematic region, which requires new phenomenology. In particular, we study the impact of i) target mass corrections, ii) higher twist corrections, iii) deuteron corrections, and iv) the shape of the nuclear PDF parametrization at large- close to one. Using the above tools, we produce a new nPDF set (named nCTEQ15HIX) which yields a good description of the new JLab data in this challenging kinematic region, and displays reduced uncertainties at large , in particular for up and down quark flavors.
Keywords
Cite
@article{arxiv.2012.11566,
title = {nCTEQ15HIX -- Extending nPDF Analyses into the High-$x$, Low $Q^2$ Region},
author = {E. P. Segarra and T. Ježo and A. Accardi and P. Duwentäster and O. Hen and T. J. Hobbs and C. Keppel and M. Klasen and K. Kovařík and A. Kusina and J. G. Morfín and K. F. Muzakka and F. I. Olness and I. Schienbein and J. Y. Yu},
journal= {arXiv preprint arXiv:2012.11566},
year = {2021}
}
Comments
25 pages, 19 figures, 6 tables, 1 auxiliary data file. Version 02: include journal updates