Non-perturbative Heavy Quark Effective Theory
High Energy Physics - Lattice
2011-01-27 v2 High Energy Physics - Phenomenology
Abstract
We explain how to perform non-perturbative computations in HQET on the lattice. In particular the problem of the subtraction of power-law divergences is solved by a non-perturbative matching of HQET and QCD. As examples, we present a full calculation of the mass of the b-quark in the combined static and quenched approximation and outline an alternative way to obtain the B-meson decay constant at lowest order. Since no excessively large lattices are required, our strategy can also be applied including dynamical fermions.
Cite
@article{arxiv.hep-lat/0310035,
title = {Non-perturbative Heavy Quark Effective Theory},
author = {Jochen Heitger and Rainer Sommer},
journal= {arXiv preprint arXiv:hep-lat/0310035},
year = {2011}
}
Comments
27 pages including figures and tables, latex2e; version published in JHEP, typos corrected and 1 reference added