Role of Four-Quark Operators in the Inclusive $\Lambda_b$ Decays
High Energy Physics - Phenomenology
2011-01-27 v1
Abstract
We compute by QCD sum rules the matrix elements of the relevant four-quark operators appearing in the expression of the inclusive decay rates at the order . The results suggest that corrections are not responsible of the observed difference between the lifetime of and .
Cite
@article{arxiv.hep-ph/9604425,
title = {Role of Four-Quark Operators in the Inclusive $\Lambda_b$ Decays},
author = {P. Colangelo and F. De Fazio},
journal= {arXiv preprint arXiv:hep-ph/9604425},
year = {2011}
}
Comments
LaTex, 14 pages, 3 uuencoded postscript figures