Factorization of the t-channel pole in quark-gluon scattering
Factorization of the t-channel pole in quark-gluon scattering
复制标题
DOI：
10.1103/physrevd.81.114021
复制
发表时间：
2010-06-11
影响因子：
5
通讯作者：
Smillie, Jennifer M.
中科院分区：
文献类型：
--
作者：
Andersen, Jeppe R.;Smillie, Jennifer M.
通过在树水平上研究夸克-胶子散射中特定的螺旋度态，我们明确地证明了完全的t-通道极点可以精确地描述为两个局域流的收缩。在螺旋度分配的四种情况下，也存在一个通道的qQ-散射，qg-散射正是由这个t-通道极点。在剩下的四个螺旋度分配中，只有两个是u和s通道极点的贡献。我们提取的t-通道电流产生的胶子散射的规范不变的定义，并提供一个解释的形式。
By exploring specific helicity states in quark-gluon scattering at tree level we show explicitly that the full t-channel pole can be described exactly as a contraction of two local currents. In the four cases of helicity assignment where a channel exists also for qQ-scattering, qg-scattering is described exactly by this t-channel pole. Only in two of the four remaining helicity assignments is there a contribution from u- and s-channel poles. We extract a gauge-invariant definition for the t-channel current generated by the scattering of a gluon and offer an interpretation of the form.