Spin-Polarizabilities of the Nucleon in Chiral Soliton Model with Dispersion Relation

Details Spin-Polarizabilities of the Nucleon in Chiral Soliton Model with Dispersion Relation Spin-Polarizabilities of the Nucleon in Chiral Soliton Model with Dispersion Relation

1999-01-06

arxiv.org/abs/nucl-th/9901010v1

Physics

Nuclear Physics

Nuclear Theory

21 pages, REVTeX, 4 postscript figures

Scientific paper

10.1103/PhysRevC.60.065213

We calculate the spin-polarizabilities of the nucleon by means of dispersion relation, where the pion photoproduction amplitude predicted by chiral soliton model is utilized. We consider the $N\pi$ and $\Delta\pi$ channels in the pion-photoproduction amplitude, and also evaluate the contribution of the anomalous term of the $\pi^0\gamma\gamma$ process. In a narrow decay-width limit of the $\Delta$ particle the result coincides with that in heavy baryon chiral perturbation theory (HBChPT) except for the interference part of the electric and magnetic amplitudes. A comparison with the multipole analysis is given.

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