Two-loop hybrid renormalization of local dimension-4 heavy-light operators
G. Amoros, M. Neubert
Abstract
The renormalization of local dimension-4 operators containing a heavy and a light quark field at scales below the heavy-quark mass is discussed, using the formalism of the heavy-quark effective theory. The anomalous dimensions of these operators and their mixing are calculated to two-loop order. Some phenomenological applications are briefly discussed.
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