Supersymmetric Higgs Singlet Effects on B-Meson FCNC Observables at Large tan(beta)

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dc.creatorHodgkinson, Robert N.
dc.creatorPilaftsis, Apostolos
dc.date2008-07-25
dc.date2008-09-12
dc.date.accessioned2026-07-07T11:45:05Z
dc.date.available2026-07-07T11:45:05Z
dc.descriptionHiggs singlet superfields are usually present in most extensions of the Minimal Supersymmetric Standard Model (MSSM) that address the mu-problem, such as the Next-to-Minimal Supersymmetric Standard Model (NMSSM) and the Minimal Nonminimal Supersymmetric Standard Model (MNSSM). Employing a gauge- and flavour-covariant effective Lagrangian formalism, we show how the singlet Higgs bosons of such theories can have significant contributions to B-meson flavour-changing neutral current (FCNC) observables for large values of $\tanβ\stackrel{>}{{}_\sim} 50$ at the 1-loop level. Illustrative results are presented including effects on the B_s and B_d mass differences and on the rare decay $B_s\toμ^+μ^-$. In particular, we find that depending on the actual value of the lightest singlet pseudoscalar mass 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.
dc.description28 pages, 8 figures, LaTeX. Minor updates. Version to be published in PRD
dc.identifierhttps://arxiv.org/abs/0807.4167
dc.identifierhttp://arxiv.org/abs/0807.4167
dc.identifierPhys.Rev.D78:075004,2008
dc.identifierdoi:10.1103/PhysRevD.78.075004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201771
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSupersymmetric Higgs Singlet Effects on B-Meson FCNC Observables at Large tan(beta)
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