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arXiv 1706.08962hep-phhep-lat
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部分子物理大动量有效理论中的重整化

Renormalization in Large Momentum Effective Theory of Parton Physics

Xiangdong Ji, Jian-Hui Zhang, Yong Zhao

摘要:

在部分子物理的大动量有效场论方法中,夸克和胶子场的非定域算符的矩阵元在空间方向上由Wilson直线连接,在格点量子色动力学中计算为强子动量的函数。使用重夸克有效理论的形式主义,我们显示了这些运营商的乘法重整化在所有订单微扰理论,无论是在尺寸和晶格正则化。这一结果为在蒙特卡罗模拟中通过重整化观测量提取部分子性质提供了理论基础。

英文摘要:

In the large-momentum effective field theory approach to parton physics, the matrix elements of non-local operators of quark and gluon fields, linked by straight Wilson lines in a spatial direction, are calculated in lattice quantum chromodynamics as a function of hadron momentum. Using the heavy-quark effective theory formalism, we show a multiplicative renormalization of these operators at all orders in perturbation theory, both in dimensional and lattice regularizations. The result provides a theoretical basis for extracting parton properties through properly renormalized observables in Monte Carlo simulations.

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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