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Heavy Pair Production Currents with General Quantum Numbers in Dimensionally Regularized NRQCD

Andre H. Hoang·Pedro Ruiz-Femenia
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Abstract

We discuss the form and construction of general color singlet heavy particle-antiparticle pair production currents for arbitrary quantum numbers, and issues related to evanescent spin operators and scheme-dependences in nonrelativistic QCD (NRQCD) in n=3-2epsilon dimensions. The anomalous dimensions of the leading interpolating currents for heavy quark and colored scalar pairs in arbitrary (2S+1)L_J angular-spin states are determined at next-to-leading order in the nonrelativistic power counting.

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Andre H. Hoang, Pedro Ruiz-Femenia. 2007-12-07. Heavy Pair Production Currents with General Quantum Numbers in Dimensionally Regularized NRQCD. https://doi.org/10.1103/physrevd.74.114016

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