Di-photon Higgs decay in the MSSM with explicit CP violation
Abstract
The Minimal Supersymmetric Standard Model (MSSM) with explicit CP violation is studied with the help of the di-photon decay channel of the lightest neutral Higgs boson. Effects of CP violation, entering via the scalar/pseudo-scalar mixing at higher order as well as through the Higgs-sfermion-sfermion couplings at tree-level, are analyzed in the MSSM with and without light sparticles. A light stop may have a strong impact on the decay width and Branching Ratio (BR) of the decay process H_1 -> gamma gamma, whereas other light sparticles have only little influence. In some regions of the MSSM parameter space with large CP-violating phase phi_mu ~ 90 degrees a light stop can change the BR by more than 50%.
Cite
@article{arxiv.0710.0340,
title = {Di-photon Higgs decay in the MSSM with explicit CP violation},
author = {S. Hesselbach and S. Moretti and S. Munir and P. Poulose},
journal= {arXiv preprint arXiv:0710.0340},
year = {2008}
}
Comments
3 pages, LaTeX, 4 eps figures, uses jpconf.cls, talk given by S. Hesselbach at the 2007 Europhysics Conference on High Energy Physics, Manchester, England, 19-25 July 2007; v2: changes in author affiliations