Novel analysis of chiral loop effects in the generalized Gerasimov-Drell-Hearn sum rule
High Energy Physics - Phenomenology
2009-11-07 v2 Nuclear Experiment
Nuclear Theory
Abstract
We study the chiral loop corrections to the generalized Gerasimov-Drell-Hearn sum rule of the nucleon for finite photon virtuality in the framework of a Lorentz-invariant formulation of baryon chiral perturbation theory. We perform a complete one-loop calculation and obtain significant differences to previously found results based on the heavy baryon approach for the proton and neutron spin-dependent forward Compton amplitudes.
Keywords
Cite
@article{arxiv.hep-ph/0203167,
title = {Novel analysis of chiral loop effects in the generalized Gerasimov-Drell-Hearn sum rule},
author = {Véronique Bernard and Thomas R. Hemmert and Ulf-G. Meißner},
journal= {arXiv preprint arXiv:hep-ph/0203167},
year = {2009}
}
Comments
7 pp, 3 figs, published version, extended discussion, minor revisions