(Lambda_b -> Lambda l^+ l^-) decay in universal extra dimensions
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We study the exclusive (Lambda_b -> \Lambda l^+ l^-) decay in the Appelquist, Chang, Dobrescu model within one universal extra dimension. We investigate the sensitivity of the branching ratio, lepton polarization and forward-backward asymmetry A_{FB} to the compactification parameter (1/R) We obtain that the branching ratio changed about 50% compared to the SM value, when (1/R=200 GeV) and zero position of the forward-backward asymmetry is shifted to the left compared to the SM result. Therefore measurement of the branching ratio of (Lambda_b -> Lambda l^+ l^-) decay and determination of zero position of A_{FB} are very useful in looking for new physics in the framework of the UED models.
Cite
@article{arxiv.hep-ph/0606225,
title = {(Lambda_b -> Lambda l^+ l^-) decay in universal extra dimensions},
author = {T. M. Aliev and M. Savci},
journal= {arXiv preprint arXiv:hep-ph/0606225},
year = {2008}
}
Comments
17 pages, 3 figures, LaTeX formatted