The Nucleon Spin Polarizability at Order O(p4) in Chiral Perturbation Theory
Xiangdong Ji, Chung-Wen Kao, Jonathan Osborne
Abstract
We calculate the forward spin-dependent photon-nucleon Compton amplitude as a function of photon energy at the next-to-leading ( O(p4)) 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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