Application of heavy-quark effective theory to lattice QCD: II. Radiative corrections to heavy-light currents release_chzie6rlzjf33mqjupaon3a7ry

by Junpei Harada, Shoji Hashimoto, Ken-Ichi Ishikawa, Andreas S. Kronfeld, Tetsuya Onogi, Norikazu Yamada

Released as a article .

2001  

Abstract

We apply heavy-quark effective theory to separate long- and short-distance effects of heavy quarks in lattice gauge theory. In this approach, the inverse heavy-quark mass and the lattice spacing are treated as short distances, and their effects are lumped into short-distance coefficients. We show how to use this formalism to match lattice gauge theory to continuum QCD, order by order in the heavy-quark expansion. In this paper, we focus on heavy-light currents. In particular, we obtain one-loop results for the matching factors of lattice currents, needed for heavy-quark phenomenology, such as the calculation of heavy-light decay constants, and heavy-to-light transition form factors. Results for the Brodsky-Lepage-Mackenzie scale q^* are also given.
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Type  article
Stage   submitted
Date   2001-12-20
Version   v1
Language   en ?
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