Width difference in the Bs system from lattice HQET
High Energy Physics - Lattice
2011-01-27 v2 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Abstract
We present recent results for the prediction of the Bs lifetime difference from lattice Heavy Quark Effective Theory simulations. In order to get a next-to-leading order result we have calculated the matching between QCD and HQET and the two loop anomalous dimension in the HQET for all the \Delta B=2 operators, in particular for the operators which enter in the width difference. We obtain for the Bs lifetime difference, (\Delta\Gamma_Bs/\Gamma_Bs)=(5.1+/- 1.9+/- 1.7)10^(-2).
Cite
@article{arxiv.hep-lat/0009007,
title = {Width difference in the Bs system from lattice HQET},
author = {V. Gimenez and J. Reyes},
journal= {arXiv preprint arXiv:hep-lat/0009007},
year = {2011}
}
Comments
4 pages, LaTeX. Talk given at International Conference on Hyperons, Charm and Beauty Hadrons, Valencia, Spain, 27-30 Jun 2000. Some misprints corrected. No result changed