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arXiv · hep-lat/9406002

Radiative Corrections to the Kinetic Couplings in Nonrelativistic Lattice QCD

Colin J. Morningstar
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Abstract

The heavy-quark mass and wave function renormalizations, energy shift, and radiative corrections to two important couplings, the so-called kinetic couplings, in nonrelativistic lattice QCD are determined to leading order in tadpole-improved perturbation theory. The scales at which to evaluate the running QCD coupling for these quantities, except the wave function renormalization, are obtained using the Lepage-Mackenzie prescription. When the bare quark mass is greater than the inverse lattice spacing, the kinetic coupling corrections are roughly 10\% of the tree-level coupling strengths; these corrections grow quickly as the bare quark mass becomes small. A need for computing the two-loop corrections to the energy shift and mass renormalization is demonstrated.

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Colin J. Morningstar. 1994-06-02. Radiative Corrections to the Kinetic Couplings in Nonrelativistic Lattice QCD. https://doi.org/10.1103/physrevd.50.5902

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