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arXiv · nucl-th/9901010

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

Y. Tanushi·S. Saito·M. Uehara
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Abstract

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 $Nπ$ and $Δπ$ channels in the pion-photoproduction amplitude, and also evaluate the contribution of the anomalous term of the $π^0γγ$ process. In a narrow decay-width limit of the $Δ$ 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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Y. Tanushi, S. Saito, M. Uehara. 1999-01-06. Spin-Polarizabilities of the Nucleon in Chiral Soliton Model with Dispersion Relation. https://doi.org/10.1103/physrevc.60.065213

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