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arXiv 2408.01243hep-ph
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Drell-Yan过程中$T$-偶强子结构函数的横动量依赖性

Transverse momentum dependence of the $T$-even hadronic structure functions in the Drell-Yan process

Valery E. Lyubovitskij, Alexey S. Zhevlakov, Iurii A. Anikin

AI总结:

本文在共线因子化微扰QCD框架下分析Drell-Yan过程的$T$-偶轻子角分布,计算结构函数与角系数至$Q_T^2/Q^2$次次领头阶,并用ATLAS数据检验角系数及前后不对称性。

摘要:

我们对Drell-Yan过程中的$T$-偶轻子角分布进行了详细分析,其中包括$\gamma/Z^0$规范玻色子交换,并在共线因子化方案下采用微扰QCD,取$\alpha_s$展开的领头阶。我们重点研究相应强子结构函数和角系数对横动量$Q_T$的依赖,计算达到$Q_T^2/Q^2$展开的次次领头阶。我们对$Q_T$依赖性进行数值分析,并将快度积分后的$T$-偶角系数与LHC上ATLAS合作组的现有数据进行比较。此外,我们还给出前后不对称性的结果,并与数据进行比较。

英文摘要:

We present detailed analysis of the $T$-even lepton angular distribution in the Drell-Yan process including $γ/Z^0$ gauge boson exchange and using perturbative QCD based on the collinear factorization scheme at leading order in the $α_s$ expansion. We focus on the study of the transverse momentum $Q_T$ dependence of the corresponding hadronic structure functions and angular coefficients up to next-next-to-leading order in the $Q_T^2/Q^2$ expansion. We analyze $Q_T$ dependence numerically and compare $T$-even angular coefficients integrated over rapidity with available data of the ATLAS Collaboration at LHC. Additionally, we present our results for the forward-backward asymmetry and compare it with data.

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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