The DMO Sum Rule Revisited
High Energy Physics - Phenomenology
2009-10-30 v1
Abstract
We reconsider the DMO sum rule in light of our recent two-loop calculations of isospin and hypercharge vector and axialvector current propagators in chiral perturbation theory. A modified derivation valid to second order in the light quark masses is presented, and a phenomenological analysis yields determination of a combination of finite counterterms occurring in the p^4 and p^6 chiral lagrangians. Suggestions are given for further study.
Keywords
Cite
@article{arxiv.hep-ph/9711256,
title = {The DMO Sum Rule Revisited},
author = {Eugene Golowich and Joachim Kambor},
journal= {arXiv preprint arXiv:hep-ph/9711256},
year = {2009}
}
Comments
8 pages, LaTeX, 1 table