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arXiv 2607.07664hep-phhep-exnucl-exnucl-th

轻子-强子散射中单举强子和喷注产生

Single inclusive hadron and jet production in lepton-hadron scattering

Jian-Wei Qiu, Kazuhiro Watanabe

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中文总结 AI 辅助

该研究首次用联合QCD+QED因子化方法计算轻子-强子散射高横动量下单举强子和喷注产生,推导默认LDFs并讨论提取策略,给出在杰斐逊实验室和未来电子-离子对撞机能量下的计算结果。

中文摘要 AI 辅助

我们首次采用联合QCD+QED因子化方法,对轻子-强子散射中高横动量下单举强子和喷注产生进行了计算。散射截面被分解为红外安全的硬系数函数分别与碰撞轻子和强子的普适轻子分布函数(LDFs)、部分子分布函数(PDFs)以及观测强子(或喷注)的碎裂函数(FFs)的卷积。通过联合QCD+QED因子化,LDFs、PDFs和FFs的DGLAP型演化方程的演化核必须在QCD和QED中计算。我们推导了计算所需的一组默认LDFs,并讨论了从未来数据中提取普适、非微扰LDFs的策略。还给出了在杰斐逊实验室和未来电子-离子对撞机能量下的单举强子和/或喷注产生的计算结果。

英文摘要

We present the first calculation of single inclusive hadron and jet production at large transverse momentum in lepton-hadron scattering in a joint QCD+QED factorization approach. The scattering cross section is factorized into a convolution of infrared-safe hard coefficient functions with universal lepton distribution functions (LDFs) and parton distribution functions (PDFs) of the colliding lepton and hadron, respectively, together with fragmentation functions (FFs) of the observed hadron (or jet). With joint QCD+QED factorization, the DGLAP-type evolution equations for LDFs, PDFs, and FFs necessarily have evolution kernels calculated in both QCD and QED. We derive a default set of LDFs for our calculations and discuss a strategy to extract universal, non-perturbative LDFs from future data. We present our calculations for single inclusive hadron and/or jet production at the energies of Jefferson Lab and the future Electron-Ion Collider.

发表机构

  • Theory Center, Jefferson Lab(理论中心,杰斐逊实验室)
  • Department of Physics, William & Mary(威廉与玛丽学院物理系)
  • Department of Physics, Graduate School of Science, Tohoku University(东北大学理学研究科物理学专攻)
  • Faculty of Science and Technology, Seikei University(圣成大学理工学部)

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