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arXiv · 1107.3718

Two-loop renormalization of three-quark operators in QCD

S. Kraenkl·A. N. Manashov
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Abstract

Renormalization of composite three-quark operators in dimensional regularization is complicated by the mixing of physical and unphysical (evanescent) operators. This mixing must be taken into account in a consistent subtraction scheme. In this work we propose a particular scheme that allows one to avoid the necessity of additional finite renormalization and is convenient in QCD applications. As an illustration, we calculate the two-loop anomalous dimensions of local three-quark operators in this scheme.

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S. Kraenkl, A. N. Manashov. 2011-07-19. Two-loop renormalization of three-quark operators in QCD. https://doi.org/10.1016/j.physletb.2011.08.028

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