Chiral extrapolation of baryon mass ratios
High Energy Physics - Phenomenology
2013-03-27 v2 High Energy Physics - Lattice
Abstract
We analyze lattice data for octet baryon masses from the QCDSF collaboration employing manifestly covariant Baryon Chiral Perturbation Theory. It is shown that certain combinations of low-energy constants can be fixed more accurately than before from this data. We also examine the impact of this analysis on the pion-nucleon sigma term, and on the convergence properties of baryon mass expansions in the SU(3) symmetry limit.
Keywords
Cite
@article{arxiv.1209.0980,
title = {Chiral extrapolation of baryon mass ratios},
author = {P. C. Bruns and L. Greil and A. Schäfer},
journal= {arXiv preprint arXiv:1209.0980},
year = {2013}
}
Comments
Updated version, to be published in Phys. Rev. D