标题： 末态相互作用在自旋不对称性以及氘核非相干介子产生中的GDH求和规则 显示英文标题

标题： Final state interaction in spin asymmetry and GDH sum rule for incoherent pion production on the deuteron

摘要： 非相干单介子光生反应对氘核自旋响应的贡献，即光子和氘核自旋平行与反平行时总光吸收截面的不对称性，在包含末态$NN$-和$\pi N$-再散射的情况下，计算了$\Delta$-共振区域内的贡献。 主要来自$NN$-再散射的显著效应导致自旋不对称性明显减小。 此外，通过积分到光子能量为550 MeV，明确评估了Gerasimov-Drell-Hearn积分的贡献。 末态相互作用将积分值减少到纯冲量近似所得值的一半左右。 显示英文摘要

摘要： The contribution of incoherent single pion photoproduction to the spin response of the deuteron, i.e., the asymmetry of the total photoabsorption cross section with respect to parallel and antiparallel spins of photon and deuteron, is calculated over the region of the $\Delta$-resonance with inclusion of final state $NN$- and $\pi N$-rescattering. Sizeable effects, mainly from $NN$-rescattering, are found leading to an appreciable reduction of the spin asymmetry. Furthermore, the contribution to the Gerasimov-Drell-Hearn integral is explicitly evaluated by integration up to a photon energy of 550 MeV. Final state interaction reduces the value of the integral to about half of the value obtained for the pure impulse approximation.