Two-Loop QCD Renormalization and Anomalous Dimension of the Scalar Diquark Operator

Details Two-Loop QCD Renormalization and Anomalous Dimension of the Scalar Diquark Operator Two-Loop QCD Renormalization and Anomalous Dimension of the Scalar Diquark Operator

2010-10-14

arxiv.org/abs/1010.2971v3

J.Phys.G38:025001,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version 3 corrects an error in Table 1 and associated results. 7 pages, 4 embedded eps figures

Scientific paper

10.1088/0954-3899/38/2/025001

The renormalization of the scalar diquark operator and its anomalous dimension is calculated at two-loop order in QCD, enabling higher-order QCD studies of diquarks. As an application of our result, the two-loop diquark anomalous dimension in the $\bar{{\rm MS}}$ scheme is used to study the QCD renormalization scale dependence of diquark matrix elements of the $\Delta S=1$ effective weak Hamiltonian.

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