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), pp. 206-211. (doi:10.1016/j.physletb.2007.03.053).


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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??? 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 ?90° can render the H1??? branching ratio more than 10 times larger, for suitable combinations of the other MSSM parameters.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.physletb.2007.03.053
ISSNs: 0370-2693 (print)
ePrint ID: 57482
Date :
Date Event
31 May 2007Published
Date Deposited: 14 Aug 2008
Last Modified: 16 Apr 2017 17:39
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/57482

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