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The Nucleon Spin Polarizability at Order ${\cal O}(p^4$) in Chiral Perturbation Theory

Xiangdong Ji·Chung-Wen Kao·Jonathan Osborne
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Abstract

We calculate the forward spin-dependent photon-nucleon Compton amplitude as a function of photon energy at the next-to-leading (${\cal O}(p^4)$) order in chiral perturbation theory, from which we extract the contribution to nucleon spin polarizability. The result shows a large correction to the leading order contribution.

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Xiangdong Ji, Chung-Wen Kao, Jonathan Osborne. 1999-08-31. The Nucleon Spin Polarizability at Order ${\cal O}(p^4$) in Chiral Perturbation Theory. https://doi.org/10.1103/physrevd.61.074003

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