Bound on minimal universal extra dimensions from Bbar -> X_s gamma
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We reexamine the constraints on universal extra dimensional models arising from the inclusive radiative Bbar -> X_s gamma decay. We take into account the leading order contributions due to the exchange of Kaluza-Klein modes as well as the available next-to-next-to-leading order corrections to the Bbar -> X_s gamma branching ratio in the standard model. For the case of one large flat universal extra dimension, we obtain a lower bound on the inverse compactification radius 1/R > 600 GeV at 95% confidence level that is independent of the Higgs mass.
Keywords
Cite
@article{arxiv.hep-ph/0703064,
title = {Bound on minimal universal extra dimensions from Bbar -> X_s gamma},
author = {Ulrich Haisch and Andreas Weiler},
journal= {arXiv preprint arXiv:hep-ph/0703064},
year = {2008}
}
Comments
4 pages, 3 figures; references added, matches version to appear in PRD