Pions in isospin asymmetric matter and nuclear Drell-Yan scattering
Nuclear Theory
2015-06-26 v1 High Energy Physics - Phenomenology
Abstract
Using a self-consistent delta-hole model the pion propagation in isospin asymmetric nuclear matter is studied. In neutron-rich matter, corresponding to heavy nuclei, a significant difference in positive and negative pion light-cone distributions is obtained leading to a nuclear enhancement of up antiquark distribution compared to the down antiquark one. This means that the sea-quark asymmetry in the free nucleon cannot be extracted model independently from an experiment on a neutron-rich nucleus.
Keywords
Cite
@article{arxiv.nucl-th/9812003,
title = {Pions in isospin asymmetric matter and nuclear Drell-Yan scattering},
author = {C. L. Korpa and A. E. L. Dieperink},
journal= {arXiv preprint arXiv:nucl-th/9812003},
year = {2015}
}
Comments
10 pages, 3 figures (included), Latex 2.09, uses elsart.sty, epsf.sty