Parameterization of the quark-quark correlator of a spin- 1/2 hadron

Parameterization of the quark-quark correlator of a spin- 1/2 hadron
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DOI:
10.1016/j.physletb.2005.05.037
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发表时间:
2005-04
期刊:
影响因子:
4.4
通讯作者:
K. Goeke;A. Metz;M. Schlegel
K. Goeke;A. Metz;M. Schlegel
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
K. Goeke;A. Metz;M. Schlegel

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本文考虑自旋为12的强子的夸克-夸克关联函数的一般参数化。威尔逊线的存在,确保颜色规范不变性的相关诱导结构,没有明确给出在现有文献中。特别地,导出了进入各种硬散射过程的横向动量相关器的一般形式。在这种情况下,两个新的时间反演奇部分子分布出现在扭转-3水平。
The general parameterization of the quark–quark correlation function for a spin-12 hadron is considered. The presence of the Wilson line ensuring color gauge invariance of the correlator induces structures that were not given explicitly in the existing literature. In particular, the general form of the transverse momentum dependent correlator entering various hard scattering processes is derived. In this case two new time-reversal odd parton distributions appear at the twist-3 level.