Probing extended Higgs sector through rare b --> s mu+ mu- transitions

Abstract

We study the constraints on the contribution of new physics in the form of scalar/pseudoscalar operators to the average forward backward asymmetry <A_{FB}> of muons in B --> K mu+ mu- and the longitudinal polarization asymmetry A_{LP} of muons in B_s --> mu+ mu-. We find that the maximum possible value of <A_{FB}> allowed by the present upper bound on B(B_s --> mu+ mu-) is about 1% at 95% C.L. and hence will be very difficult to measure. On the other hand, the present bound on B(B_s --> mu+ mu-) fails to put any constraints on A_{LP}, which can be as high as 100% even if B(B_s --> mu+ mu-) is close to its standard model prediction. The measurement of A_{LP} will be a direct evidence for an extended Higgs sector, and combined with the branching ratio B(B_s --> mu+ mu-) it can even separate the new physics scalar and pseudoscalar contributions.

arXiv comment21 pages, 4 figures

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Cited by in corpus (12)

• New Physics in b -> s mu+ mu-: CP-Conserving Observables
• New-physics contributions to the forward-backward asymmetry in B -> K* mu+ mu-
• Complete One-Loop MSSM Predictions for B --> lepton lepton' at the Tevatron and LHC
• Revisiting $B_s\to {\mu }^{+}{\mu }^{-}$ in the two-Higgs doublet models with $Z_2$ symmetry
• Large forward-backward asymmetry in B --> K mu+ mu- from new physics tensor operators
• New physics effects in purely leptonic $B_s^{\ast }$ decays
• Higgs induced FCNC as a source of new physics in $b\to s$ transitions
• B_s --> mu+ mu- decay in the R-parity violating minimal supergravity
• Impact of $Z^{\prime }$ and UED parameters on different asymmetries in $B_s\to \varphi {\ell }^{+}{\ell }^{-}$ decays
• Rare decays $B_s\to l^{+}{l}^{-}$ and $B\to K{l}^{+}{l}^{-}$ in \the topcolor-assisted technicolor model
• Tension between scalar/pseudoscalar new physics contribution to B_s --> mu+ mu- and B --> K mu+ mu-
• Probing quantum decoherence at Belle II and LHCb