Explicit CP violation in the MSSM through Higgs -> gamma gamma


Moretti, S., Munir, S. and Poulose, P. (2007) Explicit CP violation in the MSSM through Higgs -> gamma gamma. Physics Letters B, 649, (2-3), 206-211. (doi:10.1016/j.physletb.2007.03.053).

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Description/Abstract

The MSSM with explicit CP violation is studied through the di-photon decay channel of the lightest neutral Higgs boson. Through the leading one-loop order H1→γγ is affected by a large number of Higgs-sparticle couplings, which could be complex. Our preliminary scan over the supersymmetric parameter space shows that more than 50% average deviations are possible, in either direction, in the corresponding branching ratio, with respect to the case of the CP-conserving MSSM. In particular, our analysis shows that in the presence of a light stop (with mass 200 GeV) a CP-violating phase μ90° can render the H1→γγ branching ratio more than 10 times larger, for suitable combinations of the other MSSM parameters.

Item Type: Article
ISSNs: 0370-2693 (print)
Related URLs:
Subjects: Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Physics and Astronomy
ePrint ID: 57482
Date Deposited: 14 Aug 2008
Last Modified: 27 Mar 2014 18:40
URI: http://eprints.soton.ac.uk/id/eprint/57482

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