Three-loop anomalous dimension of the heavy-light quark current in HQET
classification
✦ hep-ph
keywords
anomalouscurrentdimensionheavy-lighthqetquarkthree-loopaccuracy
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The anomalous dimension of the heavy-light quark current in HQET is calculated with three-loop accuracy, as well as the renormalized heavy-quark propagator. The NNL perturbative correction to f_B/f_D is obtained.
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