Novel analysis of chiral loop effects in the generalized Gerasimov-Drell-Hearn sum rule

Preprint

18 March 2002

preprint
Published by arXiv in arXiv

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

GENERALIZED GERASIMOV
PERTURBATION THEORY
GERASIMOV DRELL
DRELL HEARN
CHIRAL LOOP
LORENTZ
HEARN

All Related Versions

Version 1, 2002-03-18, ArXiv
Version 2, 2002-10-30, ArXiv
Published version: Physics Letters B, 545 (1-2), 105.

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