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arXiv · 1706.08962

Renormalization in Large Momentum Effective Theory of Parton Physics

Xiangdong Ji·Jian-Hui Zhang·Yong Zhao
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Abstract

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.

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Xiangdong Ji, Jian-Hui Zhang, Yong Zhao. 2017-06-27. Renormalization in Large Momentum Effective Theory of Parton Physics. https://doi.org/10.1103/physrevlett.120.112001

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