Two-loop renormalization of three-quark operators in QCD

Details Two-loop renormalization of three-quark operators in QCD Two-loop renormalization of three-quark operators in QCD

2011-07-19

arxiv.org/abs/1107.3718v2

Phys.Lett.B703:519-523,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure; published version, typos corrected

Scientific paper

10.1016/j.physletb.2011.08.028

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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