Octet and decuplet baryon self-energies in relativistic SU(3) chiral effective theory
High Energy Physics - Phenomenology
2021-05-26 v1 Nuclear Theory
Abstract
The self-energies of the full set of flavor SU(3) octet and decuplet baryons are computed within a relativistic chiral effective theory framework. The leading nonanalytic chiral behavior is derived for the octet and decuplet masses, and a finite-range regularization consistent with Lorentz and gauge invariance is applied to account for the finite size of the baryons. Using a four-dimensional dipole form factor, the relative importance of various meson-baryon loop contributions to the self-energies is studied numerically as a function of the dipole range parameter and meson mass, and comparison is made between the relativistic results and earlier approximations within the heavy baryon limit.
Keywords
Cite
@article{arxiv.2012.07767,
title = {Octet and decuplet baryon self-energies in relativistic SU(3) chiral effective theory},
author = {P. M. Copeland and Chueng-Ryong Ji and W. Melnitchouk},
journal= {arXiv preprint arXiv:2012.07767},
year = {2021}
}
Comments
42 pages, 7 figures