发表机构
Henan Normal University; Peking University; Yunnan University（河南师范大学; 北京大学; 云南大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文研究低横动量半单举深度非弹性散射中双光子交换产生的T-奇效应，计算吸收部分并因子化，发现有限微分截面新贡献，可用于探测新效应和新物理。
AI 中文摘要
我们研究了在产生的强子具有低横动量的运动学区域中，半单举深度非弹性散射中通过双光子交换产生的T-奇效应。计算了轻子-夸克散射振幅的吸收部分。对吸收部分进行了横动量依赖的因子化处理。尽管吸收部分是发散的，但物理结果，即所获得的微分截面，是有限的。包括T-奇效应后，微分截面获得了新的贡献，这些贡献具有与单光子交换所得不同的角依赖性。可以引入某些不对称性来探测T-奇效应。我们的结果不仅与探测该过程中单光子近似之外的新效应相关，而且与在轻子-质子对撞机上寻找新物理相关。
英文摘要
We study T-odd effects through two-photon exchange in semi-inclusive deeply inelastic scattering in the kinematic region where the produced hadron has a low transverse momentum. The absorptive part of lepton-quark scattering amplitude is calculated. Transverse momentum dependent factorization is performed with the absorptive part. Although the absorptive part is divergent, the physical results, i.e., the obtained differential cross-section, is finite. Including the T-odd effects, the differential cross section receives new contributions which have different angular dependence than that obtained with one-photon exchange. Certain asymmetries can be introduced to detect the T-odd effects. Our results here are not only relevant to detecting new effect beyond the one-photon approximation in the process but also relevant to searching for new physics at lepton-proton colliders.
Comments14 pages, 2 figures
