TTP - TTP03-10 Three-loop anomalous dimension of the heavy-light quark current in HQET

Institute for Theoretical Particle Physics (TTP)

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.

K.G. Chetyrkin and A.G. Grozin

Nucl.Phys. B666 (2003) :289-302

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TTP03-10 Three-loop anomalous dimension of the heavy-light quark current in HQET

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