Density dependence of meson - nucleon vertices in nuclear matter
Nuclear Theory
2009-10-31 v3 High Energy Physics - Phenomenology
Abstract
Changes in the meson-nucleon coupling constant and the vertex form factor in nuclear matter are studied in a modified Skyrme Lagrangian including the sigma-meson field that satisfies the scale invariance. Renormalization of the axial-vector coupling constant, and the nucleon mass are studied in a consistent model. The results are consistent with the empirical evidence. A calculation of pi N commutator, sigma-term, indicates that the medium changes its magnitude considerably.
Keywords
Cite
@article{arxiv.nucl-th/9806062,
title = {Density dependence of meson - nucleon vertices in nuclear matter},
author = {A. M. Rakhimov and F. C. Khanna and U. T. Yakhshiev and M. M. Musakhanov},
journal= {arXiv preprint arXiv:nucl-th/9806062},
year = {2009}
}
Comments
16 pages, epsfig.sty, 5 figures (Ps).The section "Discussions and summary" has been rewritten. Accepted for publication in Nucl. Phys. A