手征展开次领头阶的质子康普顿散射
核理论
2014-11-18 v2 高能物理 - 唯象学
摘要
我们利用重子手征微扰论中计算到四阶的振幅，给出了质子康普顿散射的微分截面计算结果。我们将计算结果与高达200 MeV的现有数据进行了比较。我们发现，在90度以下的角度，整个能量范围内的吻合是可以接受的，但在更靠后的角度，大约100 MeV以上吻合度下降，并且在光产生阈值以上完全失效。
引用
@article{arxiv.nucl-th/0101057,
title = {Compton scattering from the proton at NLO in the chiral expansion},
author = {Judith A. McGovern},
journal= {arXiv preprint arXiv:nucl-th/0101057},
year = {2014}
}
备注
13 pages RevTeX, 7 eps figures. Revised version correcting some errors, principally in the coding of 3rd order contributions; figures changed slightly and contribution from diagram 1h revised. Conclusions are largely unchanged, but the failure of the chiral expansion is visible at rather lower angles than appeared previously to be the case