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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).

Record type: Article

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??? 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.

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Published date: 31 May 2007

Identifiers

Local EPrints ID: 57482
URI: http://eprints.soton.ac.uk/id/eprint/57482
ISSN: 0370-2693
PURE UUID: 8cd5500c-de14-42e5-9a68-97d43116d518

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Date deposited: 14 Aug 2008
Last modified: 17 Jul 2017 14:29

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Contributors

Author: S. Moretti
Author: S. Munir
Author: P. Poulose

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