Spin structure of the nucleon at low energies

Preprint

3 December 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/0212033

Abstract

The spin structure of the nucleon is analyzed in the framework of a Lorentz-invariant formulation of baryon chiral perturbation theory. The structure functions of doubly virtual Compton scattering are calculated to one-loop accuracy (fourth order in the chiral expansion). We discuss the generalization of the Gerasimov-Drell-Hearn sum rule, the Burkhardt-Cottingham sum rule and moments of these. We give predictions for the forward and the longitudinal-transverse spin polarizabilities of the proton and the neutron at zero and finite photon virtuality. A detailed comparison to results obtained in heavy baryon chiral perturbation theory is also given.

Keywords

CHIRAL PERTURBATION
PERTURBATION THEORY
SPIN STRUCTURE
BARYON CHIRAL
SUM RULE
VIRTUAL
LORENTZ
NUCLEON

All Related Versions

Version 1, 2002-12-03, ArXiv
Published version: Physical Review D, 67 (7).

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