Renormalization of B=2 Transitions in the Static Limit Beyond Leading Logarithms
Abstract
The renormalization group evolution of B=2 transition operators is studied at leading order in heavy quark effective theory and at next-to-leading order in QCD. We calculate new contributions that were not taken into account in previous work and obtain the complete result to next-to-leading logarithmic accuracy. The various scheme and scale dependences and their cancellation in physical quantities are discussed explicitly.
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