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- W2042163752 abstract "We re-visit the problem of New Physics (NP) contribution to the branching ratio of the $B_s to mu^+ mu^-$ decay in light of the recent observation of this decay by LHCb. We consider R-parity violating (RPV) supersymmetric models as a primary example - recently one has reported stringent constraints on the products of the RPV coupling constants that account for the $B_s to mu^+ mu^-$ transition at the tree level. We argue that despite the LHCb measurement of the $B(B_s to mu^+ mu^-)$ is in a remarkable agreement with the Standard Model (SM) prediction, there is still room for a significant New Physics contribution to the $B(B_s to mu^+ mu^-)$, as the sign of the $B_s to mu^+ mu^-$ transition amplitude may be opposite to that of the Standard Model; alternatively the amplitude may have a large phase. We conduct our analysis mainly for the case of real RPV couplings. We find that taking into account the scenario with the sign flip of the $B_s to mu^+ mu^-$ amplitude (as compared to that of the SM) makes the bounds on the RPV coupling products significantly weaker. Also, we discuss briefly how our results are modified if the RPV couplings have large phases. In particular, we examine the dependence of the derived bounds on the phase of the NP amplitude." @default.
- W2042163752 created "2016-06-24" @default.
- W2042163752 creator A5030503331 @default.
- W2042163752 date "2013-08-12" @default.
- W2042163752 modified "2023-09-23" @default.
- W2042163752 title "New physics contribution toBs→μ+μ−within R-parity violating supersymmetric models" @default.
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- W2042163752 doi "https://doi.org/10.1103/physrevd.88.034020" @default.
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