Spin asymmetries in electron-jet production at the future electron ion collider
Spin asymmetries in electron-jet production at the future electron ion collider
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DOI：
10.1007/jhep11(2021)005
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发表时间：
2021-06
影响因子：
5.4
通讯作者：
Z. Kang;Kyle Lee;D. Shao;Fanyi Zhao
中科院分区：
文献类型：
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作者：
Z. Kang;Kyle Lee;D. Shao;Fanyi Zhao
我们研究了在电子-质子对撞过程中，电子-质子背对背电子-射流产生ep→e+射流+ X，以及相关的射流破碎过程ep→e+射流(h)+ X中可能出现的所有自旋不对称。我们推导了这些自旋不对称的分解形式，并对与未来电子离子对撞机相关的运动学进行了相应的现象学分析。在非极化电子-质子散射的情况下，我们也给出了HERA实验的方位不对称的预测。这表明电子射流的产生是探测非极化和极化横向动量相关的部分子分布函数和碎片函数的杰出过程。
We study all the possible spin asymmetries that can arise in back-to-back electron-jet production, ep→ e+ jet+ X, as well as the associated jet fragmentation process, ep→ e+ jet (h)+ X, in electron-proton collisions. We derive the factorization formalism for these spin asymmetries and perform the corresponding phenomenology for the kinematics relevant to the future electron ion collider. In the case of unpolarized electron-proton scattering, we also give predictions for azimuthal asymmetries for the HERA experiment. This demonstrates that electron-jet production is an outstanding process for probing unpolarized and polarized transverse momentum dependent parton distribution functions and fragmentation functions.