Matrix Elements of Four-quark Operators Relevant to Lifetime Difference \Delta \Gamma_{B_s} from QCD Sum Rules
High Energy Physics - Phenomenology
2011-09-13 v3
Abstract
We extract the matrix elements of four quark operators O_{L,S} relevant to the B_s and \bar B_s life time difference from QCD sum rules. We find the vacuum saturation approximation works reasonably well, i.e., within 10%. We discuss the implications of our results and compare them with the recent lattice QCD determination.
Cite
@article{arxiv.hep-ph/0011145,
title = {Matrix Elements of Four-quark Operators Relevant to Lifetime Difference \Delta \Gamma_{B_s} from QCD Sum Rules},
author = {C. -S. Huang and Ailin Zhang and Shi-Lin Zhu},
journal= {arXiv preprint arXiv:hep-ph/0011145},
year = {2011}
}
Comments
11 pages, 4 eps figures, Latex. Some reference renewed