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

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

2002-03-18

arxiv.org/abs/hep-ph/0203167v2

Phys.Lett. B545 (2002) 105-111

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pp, 3 figs, published version, extended discussion, minor revisions

Scientific paper

10.1016/S0370-2693(02)02584-4

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.

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