Three-loop anomalous dimension of the heavy-light quark current in HQET
High Energy Physics - Phenomenology
2010-04-05 v3
Abstract
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.
Cite
@article{arxiv.hep-ph/0303113,
title = {Three-loop anomalous dimension of the heavy-light quark current in HQET},
author = {K. G. Chetyrkin and A. G. Grozin},
journal= {arXiv preprint arXiv:hep-ph/0303113},
year = {2010}
}
Comments
16 pages, 7 eps figures. Typos in the discussion of fB/fD corrected. Paper is also available at http://www-ttp.physik.uni-karlsruhe.de/Preprints/ Results and REDUCE programs are available at http://www-ttp.physik.uni-karlsruhe.de/Progdata/ttp03/ttp03-10/