Radiative correction to lepton proton scatterings in manifestly Lorentz-invariant chiral perturbation theory
Radiative correction to lepton proton scatterings in manifestly Lorentz-invariant chiral perturbation theory
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DOI：
10.1103/physrevd.105.094008
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发表时间：
2021-12
影响因子：
5
通讯作者：
Xiong-Hui Cao;Qu-Zhi Li;Hanqing Zheng
中科院分区：
文献类型：
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作者：
Xiong-Hui Cao;Qu-Zhi Li;Hanqing Zheng
显然，洛伦兹不变重子手性微扰理论被用来计算低能弹性轻子质子散射的辐射校正。微分截面和电荷不对称性的修正是在具有非零轻子质量的手性次前导阶 (O ( p 2 )) 上给出的，其是红外和紫外有限的。结果与之前基于强子模型计算的预测基本一致，但与基于重重子手性摄动理论的计算有所不同，特别是在电荷不对称性方面。
Manifestly Lorentz-invariant baryon chiral perturbation theory is used to calculate the radiative correction of low energy elastic lepton proton scatterings. Corrections of differential cross section and charge asymmetry are given at chiral next-to-leading order ( O ( p 2 )) with a nonzero lepton mass, which are infrared and ultraviolet finite. The results are basically consistent with previous predictions based on hadron model calculation, but they are somewhat different from calculations based on heavy baryon chiral perturbation theory, especially in charge asymmetry.