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arXiv · 1010.2971

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

R. T. Kleiv·T. G. Steele
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Abstract

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 $ΔS=1$ effective weak Hamiltonian.

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R. T. Kleiv, T. G. Steele. 2011-11-29. Two-Loop QCD Renormalization and Anomalous Dimension of the Scalar Diquark Operator. https://doi.org/10.1088/0954-3899%2F38%2F2%2F025001

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