Probing the extended Higgs sector through rare b→sμ+μ transitions

Alok, Ashutosh Kumar ; Dighe, Amol ; Sankar, S. Uma (2008) Probing the extended Higgs sector through rare b→sμ+μ transitions Physical Review D, 78 (3). Article ID 034020. ISSN 1550-7998

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

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Deposited On:09 Mar 2018 10:24
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