Generalized spin polarizabilities of the nucleon in Heavy Baryon Chiral Perturbation Theory at order $\mathcal{O}(p^4)$

Abstract

We present the first heavy baryon chiral perturbation theory calculation at $\mathcal{O}(p^4)$ for the spin-dependent amplitudes for virtual Compton scattering off the nucleon, and extract the $\mathcal{O}(p^4)$ order results for the generalized spin polarizabilities of the nucleon.

4 pages, 2 figs, minor corrections to text, version to appear in Phys. Rev. Lett

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