2010/10/31 by R. T. Kleiv, T. G. Steele · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1088/0954-3899/38/2/025001
published as J.Phys.G38:025001,2011 · Version 3 corrects an error in Table 1 and associated results. 7 pages, 4 embedded eps figures
arxiv created 2011/11/29 · arxiv updated 2011/11/30
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 \rm MS scheme is used to study the QCD renormalization scale dependence of diquark matrix elements of the ΔS=1 effective weak Hamiltonian.