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arxiv: nucl-th/9901010 · v1 · submitted 1999-01-06 · ⚛️ nucl-th · hep-ph

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

classification ⚛️ nucl-th hep-ph
keywords chiralamplitudedeltadispersiongammamodelnucleonrelation
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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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