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arXiv · 0810.0034

Supersymmetric Higgs singlet effects on FCNC observables

Robert N. Hodgkinson
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Abstract

Higgs singlet superfields, usually present in extensions of the Minimal Supersymmetric Standard Model (MSSM) which address the $μ$-problem, such as the Next-to-Minimal Supersymmetric Standard Model (NMSSM) and the Minimal Nonminimal Supersymmetric Standard Model (mnSSM), can have significant contributions to $B$-meson flavour-changing neutral current observables for large values of $\tanβ\gsim 50$. Illustrative results are presented including effects on the $B_s$ and on the rare decay $B_s\toμ^+μ^-$. In particular, we find that in the NMSSM, the branching ratio for $B_s\toμ^+μ^-$ can be enhanced or even suppressed with respect to the Standard Model prediction by more than one order of magnitude.

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Robert N. Hodgkinson. 2008-10-01. Supersymmetric Higgs singlet effects on FCNC observables. https://doi.org/10.1063/1.3051966

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