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Di-photon Higgs decay in the MSSM with explicit CP violation

Di-photon Higgs decay in the MSSM with explicit CP violation
Di-photon Higgs decay in the MSSM with explicit CP violation
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 H1 ? ??, whereas other light sparticles have only little influence. In some regions of the MSSM parameter space with large CP-violating phase ? ~ 90° a light stop can change the BR by more than 50%.
1742-6588
072017-[3 pp]
Hesselbach, S.
7aaff8e7-583a-4aec-b423-54cbf7a8bdd3
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Munir, S.
1cc7db7a-fc80-47fe-a59c-e75c1ff7e776
Poulose, P.
83278fa6-11c6-4ef0-a23f-cece98be5fa2
Hesselbach, S.
7aaff8e7-583a-4aec-b423-54cbf7a8bdd3
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Munir, S.
1cc7db7a-fc80-47fe-a59c-e75c1ff7e776
Poulose, P.
83278fa6-11c6-4ef0-a23f-cece98be5fa2

Hesselbach, S., Moretti, S., Munir, S. and Poulose, P. (2008) Di-photon Higgs decay in the MSSM with explicit CP violation. Journal of Physics: Conference Series, 110, 072017-[3 pp]. (doi:10.1088/1742-6596/110/7/072017).

Record type: Article

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 H1 ? ??, whereas other light sparticles have only little influence. In some regions of the MSSM parameter space with large CP-violating phase ? ~ 90° a light stop can change the BR by more than 50%.

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Published date: 2008

Identifiers

Local EPrints ID: 57300
URI: http://eprints.soton.ac.uk/id/eprint/57300
ISSN: 1742-6588
PURE UUID: 0b6098e2-de09-4744-8fd8-338b2b787722

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Date deposited: 26 Aug 2008
Last modified: 09 Nov 2021 09:53

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Contributors

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

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