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arXiv 1809.04511hep-ph
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用部分子分支方法测定TMD部分子密度及其应用

Determination and application of TMD parton densities using the Parton Branching method

A. Bermudez Martinez, P. Connor, F. Hautmann, H. Jung, A. Lelek, V. Radescu, R. Zlebcik

摘要:

我们提出了一个确定的部分子密度在NLO获得的Parton分支方法,使用精确测量的深非弹性散射截面在HERA。在这项工作中所示的两组部分子密度得到相同的角角排序条件的演化尺度,它们不同的强耦合评估,我们考虑两种情况下所选择的规模:演化尺度,和横向动量qT从角排序处方。用Parton分支方法得到的横向动量依赖密度被应用于两个LHC过程:Drell-Yan pT谱和高pT双喷事件中的方位角关联。对于Drell-Yan pT谱,观察到强耦合尺度选择的显著影响。

英文摘要:

We present a determination of parton densities at NLO obtained with the Parton Branching method using precision measurements of deep inelastic scattering cross sections at HERA. The two sets of parton densities shown in this work are obtained with the same angular angular ordering condition for the evolution scale and they differ in the chosen scale for the strong coupling evaluation, for which we consider two scenarios: the evolution scale, and the transverse momentum qT from the angular ordering prescription. The transverse momentum dependent densities obtained with the Parton Branching method are applied to two LHC processes: the Drell-Yan pT spectrum and the azimuthal correlation in high pT dijet events. For the Drell-Yan pT spectrum a significant effect from the strong coupling scale choice is observed.

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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