$\Upsilon\to\gamma A_1$ in the NMSSM at large tan beta
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We investigate the effects of the radiatively-generated tan beta-enhanced Higgs-singlet Yukawa couplings on the decay in the NMSSM, where is the lightest CP-odd scalar. This radiative coupling is found to dominate in the case of a highly singlet Higgs pseudoscalar. The branching ratio for the production of such a particle is shown to be within a few orders of magnitude of current experimental constraints across a significant region of parameter space. This represents a potentially observable signal for experiments at present B-factories.
Cite
@article{arxiv.0802.3197,
title = {$\Upsilon\to\gamma A_1$ in the NMSSM at large tan beta},
author = {Robert N. Hodgkinson},
journal= {arXiv preprint arXiv:0802.3197},
year = {2008}
}
Comments
9 pages, LaTeX, 2 figures. Second result set for tan(beta)=10 included, clarifying remarks added, references updated. Version to be published in Physics Letters B