Baryon Masses in Chiral Perturbation Theory with Infrared Regularization
Nuclear Theory
2009-10-31 v2 High Energy Physics - Phenomenology
Abstract
The baryon masses are examined in SU(3) chiral perturbation theory to third order using the recently proposed infrared regularization scheme. Fourth order is estimated by evaluating the dominant diagram. With this regularization the magnitude of the loop integrals is reduced so that the convergence of the series appears to be better than in the heavy baryon approach.
Cite
@article{arxiv.nucl-th/9904017,
title = {Baryon Masses in Chiral Perturbation Theory with Infrared Regularization},
author = {P. J. Ellis and K. Torikoshi},
journal= {arXiv preprint arXiv:nucl-th/9904017},
year = {2009}
}
Comments
The original third order calculation is supplemented by an estimate of fourth order using just the dominant diagram. The convergence still appears to be better than in the heavy baryon approach. To be published in Phys. Rev. C. 15 pages latex, 2 postscript figures