A momentum subtraction scheme for two--nucleon effective field theory
Nuclear Theory
2009-10-31 v1 High Energy Physics - Phenomenology
Abstract
We introduce a momentum subtraction scheme which obeys the power counting of Kaplan, Savage, and Wise (KSW), developed for systems with large scattering lengths, . Unlike the power divergence subtraction scheme, coupling constants in this scheme obey the KSW scaling for all . We comment on the low-energy theorems derived by Cohen and Hansen. We conclude that there is no obstruction to using perturbative pions for momenta .
Keywords
Cite
@article{arxiv.nucl-th/9809071,
title = {A momentum subtraction scheme for two--nucleon effective field theory},
author = {Thomas Mehen and Iain W. Stewart},
journal= {arXiv preprint arXiv:nucl-th/9809071},
year = {2009}
}
Comments
12 pages, 3 figs