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Bs∗→<sup>l+</sup><sup>l-</sup> Decays in Light of Recent B Anomalies
Journal
Springer Proceedings in Physics
ISSN
09308989
Date Issued
2021-01-01
Author(s)
Kumbhakar, Suman
Saini, Jyoti
Abstract
Some of the recent measurements in the neutral current sector b→ sl+l- (l= e or μ ), as well as in the charged current sector b→ cτν¯, show significant deviations from their Standard Model predictions. It has been shown that two different new physics solutions, in the form of vector and/or axial vector, can explain all the anomalies in b→ sl+l- sector. We show that the muon longitudinal polarization asymmetry in Bs∗→μ+μ- decay is a good discriminant between the two solutions if it can be measured to a precision of ∼ 10 %, provided the new physics Wilson coefficients are real. We also investigate the potential impact of b→ cτν¯ anomalies on Bs∗→τ+τ- decay. We consider a model where the new physics contributions to these two transitions are strongly correlated. We find that two orders of magnitude enhancement in the branching ratio of Bs∗→τ+τ- is allowed by the present b→ cτν¯ data.