标题： 核子自旋极化率在手征微扰理论中顺序${\cal O}(p^4$的研究 显示英文标题

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

摘要： 我们从手征微扰理论的下一阶（${\cal O}(p^4)$）计算前向自旋相关的光子-核子康普顿振幅作为光子能量的函数，从中提取对核子自旋极化率的贡献。 结果表明对主导阶贡献有较大的修正。 显示英文摘要

摘要： 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.