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arXiv 2005.14322hep-phhep-exnucl-th
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π介子和极化核子的Drell-Yan过程

The Drell-Yan process with pions and polarized nucleons

S. Bastami, L. Gamberg, B. Parsamyan, B. Pasquini, A. Prokudin, P. Schweitzer

摘要:

Drell-Yan过程提供了关于强子内部结构的重要信息,包括横动量相关的部分子分布函数(TMD)。在这项工作中,我们提出的所有领导扭曲结构函数描述π诱导Drell-Yan过程的计算。的非微扰输入的TMD是从光阵面组分夸克模型,观众模型,并从实验数据中提取的TMD的可用参数化。TMD进化是第一次在次领先的对数精度实现所有的不对称性。我们的结果是兼容的第一个实验信息,有助于解释数据从正在进行的实验,并将允许一个定量评估的模型在未来时,更精确的数据将变得可用。

英文摘要:

The Drell-Yan process provides important information on the internal structure of hadrons including transverse momentum dependent parton distribution functions (TMDs). In this work we present calculations for all leading twist structure functions describing the pion induced Drell-Yan process. The non-perturbative input for the TMDs is taken from the light-front constituent quark model, the spectator model, and available parametrizations of TMDs extracted from the experimental data. TMD evolution is implemented at Next-to-Leading Logarithmic precision for the first time for all asymmetries. Our results are compatible with the first experimental information, help to interpret the data from ongoing experiments, and will allow one to quantitatively assess the models in future when more precise data will become available.

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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