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arXiv 1304.0944hep-ph
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定秩TMD分布函数的普适性

Universality of TMD distribution functions of definite rank

P. J. Mulders, M. G. A. Buffing, A. Mukherjee

摘要:

用包含夸克和胶子场非定域组合的矩阵元的傅里叶变换描述了横动量相关分布和碎裂函数。这些矩阵元素还包含具有过程相关路径的量规链接算子,其过程相关性可以追溯到过程中的颜色流。扩展到由横动量$p_\st$建立的不可约张量,我们可以定义一个具有明确算子结构的定秩TMD算子的通用集合。

英文摘要:

Transverse momentum dependent (TMD) distribution and fragmentation functions are described as Fourier transforms of matrix elementscontaining nonlocal combinations of quark and gluon fields. These matrix elements also contain a gauge link operator with a process dependent path, of which the process dependence that can be traced back to the color flow in the process. Expanding into irreducible tensors built from the transverse momenta $p_\st$, we can define a universal set of TMD correlators of definite rank with a well-defined operator structure.

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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