Nuclear corrections in neutrino-nucleus DIS and their compatibility with global NPDF analyses
Abstract
We perform a global chi^2-analysis of nuclear parton distribution functions using data from charged current neutrino-nucleus deep-inelastic scattering (DIS), charged-lepton-nucleus DIS, and the Drell-Yan (DY) process. We show that the nuclear corrections in nu-A DIS are not compatible with the predictions derived from l^+A DIS and DY data. We quantify this result using a hypothesis-testing criterion based on the chi^2 distribution which we apply to the total chi^2 as well as to the chi^2 of the individual data sets. We find that it is not possible to accommodate the data from nu-A and l^+A DIS by an acceptable combined fit. Our result has strong implications for the extraction of both nuclear and proton parton distribution functions using combined neutrino and charged-lepton data sets.
Keywords
Cite
@article{arxiv.1012.0286,
title = {Nuclear corrections in neutrino-nucleus DIS and their compatibility with global NPDF analyses},
author = {K. Kovarik and I. Schienbein and F. Olness and J. Y. Yu and C. Keppel and J. G. Morfin and J. F. Owens and T. Stavreva},
journal= {arXiv preprint arXiv:1012.0286},
year = {2015}
}
Comments
5 pages