Global reanalysis of nPDFs
Abstract
In this talk, we present the results from our recent global reanalysis of nuclear parton distribution functions (nPDFs), where the DGLAP-evolving nPDFs are constrained by nuclear hard process data from deep inelastic scattering (DIS) and the Drell-Yan (DY) process in collisions, and by sum rules. The main improvements over our earlier work {\em EKS98} are the automated minimization, better controllable fit functions and possibility for error estimates. The obtained 16-parameter fit to N=514 datapoints is good, . Fit quality comparison and the error estimates obtained show that the old {\em EKS98} parametrization is fully consistent with the present automated reanalysis. Comparison with other global nPDF analyses is presented as well. Within the DGLAP framework we also discuss the possibility of incorporating a clearly stronger gluon shadowing, which is suggested by the RHIC BRAHMS data from d+Au collisions.
Keywords
Cite
@article{arxiv.0707.0060,
title = {Global reanalysis of nPDFs},
author = {K. J. Eskola and V. J. Kolhinen and H. Paukkunen and C. A. Salgado},
journal= {arXiv preprint arXiv:0707.0060},
year = {2008}
}