论文标题
观众模型中的T型横向动量依赖性的Gluon碎片函数
T-even transverse momentum dependent gluon fragmentation functions in a spectator model
论文作者
论文摘要
我们提出了横向动量依赖性（TMD）Gluon碎片函数的模型计算，用于自旋-1/2和Spin-0 Hadron。该模型基于以下假设：一个时间样的外壳gluon可以片段片段碎片到强子和单个观众粒子中。到目前为止，这种观众模型仅用于计算夸克和胶子的TMD分布函数。 Gluon-Hadron-Spectator耦合用有效的顶点描述，其中包含两个形式。我们获得了GLUON的四个T-EVE TMD片段化函数的分析表达式。我们还介绍了$ z $依赖性和碎片函数的$ k_t $依赖性的数值结果。我们的研究表明，这些碎片化功能的效果可能很重要，并且可以通过未来的实验测量进行探测。
We present a model calculation of transverse momentum dependent (TMD) gluon fragmentation functions for the spin-1/2 and spin-0 hadrons. The model is based on the assumption that a time-like off-shell gluon can fragments into a hadron and a single spectator particle. So far such spectator models have only been used to calculate the TMD distribution functions of quark and gluons. The gluon-hadron-spectator coupling is described by an effective vertex containing two form factors. We obtain the analytic expressions for the four T-even TMD fragmentation functions of the gluon. We also present the numerical results for the $z$-dependence and $k_T$-dependence of the fragmentation functions. Our study shows that the effects of these fragmentation functions may be significant and could be probed by future experimental measurements.
