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arXiv 1902.02425hep-ph
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包含$pp$碰撞中胶子Sivers函数的过程依赖性:唯象

Process dependence of the gluon Sivers function in inclusive $pp$ collisions: phenomenology

U. D'Alesio, C. Flore, F. Murgia, C. Pisano, P. Taels

摘要:

在色规范不变的广义部分子模型中,我们对$pp$碰撞中π介子和$D$ -介子产生的SSA数据进行了唯象分析.这使我们第一次对进入模型的两种普遍类型的胶子Sivers函数施加了初步的约束。在$J/ψ$和直接的光子生产,以及与简单的广义部分子模型(没有ISI和FSI)的比较,SSA的预测,也提出了。

英文摘要:

Within the so-called color gauge invariant generalized parton model, a TMD scheme including initial- (ISI) and final-state (FSI) interactions, we present a phenomenological analysis of available SSA data for pion and $D$-meson production in $pp$ collisions. This allows us, for the first time, to put a preliminary constraint on the two universal types of gluon Sivers function entering the model. Predictions for SSAs in $J/ψ$ and direct photon production, as well as a comparison with the simpler generalized parton model (without ISIs and FSIs), are also presented.

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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