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arXiv 2405.04232hep-phhep-ex
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在EIC的$ep$碰撞中探究质子的极化光子含量

Probing the polarized photon content of the proton in $ep$ collisions at the EIC

Daniel Rein, Marc Schlegel, Werner Vogelsang

AI总结:

本文研究了在EIC运动学下$ep \ o γX $的单举直接光子产生,进行了QCD次领头阶与QED最低阶的微扰计算,发现截面在特定区域对质子内光子部分子分布函数敏感并起主导作用,同时探讨了光子隔离的影响。

摘要:

我们研究了电子-质子碰撞中单举直接光子的产生,即$ep \ o γX $,其运动学适用于Electron-Ion Collider (EIC)。我们对微分截面进行了QCD次领头阶和QED最低阶的微扰计算。我们考虑了非极化碰撞以及纵向极化入射电子和质子的散射。我们发现截面对于质子内部的光子部分子分布函数很敏感,在EIC的某些运动学区域中这产生了主导贡献。我们还研究了光子隔离对非极化和极化截面的影响。

英文摘要:

We study the single-inclusive production of prompt photons in electron proton collisions, $ep \to γX $, for kinematics relevant at the Electron-Ion Collider (EIC). We perform a perturbative calculation of the differential cross section to next-to-leading order in QCD and to lowest order in QED. We consider unpolarized collisions as well as scattering of longitudinally polarized incident electrons and protons. We show that the cross sections are sensitive to the parton distribution functions of photons inside the proton, which we find to generate the dominant contributions in certain kinematical regions at the EIC. We also investigate the effects of photon isolation on the unpolarized and polarized cross sections.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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