Explicit CP violation in the MSSM through Higgs -> gamma gamma
Explicit CP violation in the MSSM through Higgs -> gamma gamma
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.
206-211
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Munir, S.
1cc7db7a-fc80-47fe-a59c-e75c1ff7e776
Poulose, P.
83278fa6-11c6-4ef0-a23f-cece98be5fa2
31 May 2007
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Munir, S.
1cc7db7a-fc80-47fe-a59c-e75c1ff7e776
Poulose, P.
83278fa6-11c6-4ef0-a23f-cece98be5fa2
Moretti, S., Munir, S. and Poulose, P.
(2007)
Explicit CP violation in the MSSM through Higgs -> gamma gamma.
Physics Letters B, 649 (2-3), .
(doi:10.1016/j.physletb.2007.03.053).
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
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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: 16 Mar 2024 03:34
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Author:
S. Munir
Author:
P. Poulose
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