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New-Physics scenarios in $ΔS = 2$ decays of the B_c meson

S. Fajfer·J. Kamenik·P. Singer
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Abstract

The $ΔS = 2$ transition $b \to s s \bar d$ is extremely small in the standard model, proceeding only via box diagrams. Such decays are thus an appropriate ground for searching new physics. We present a study of several two-body and three-body decays of the B_c meson belonging to this class. Our calculation covers the minimal supersymmetric model with and without R-parity and a two-Higgs-doublet model. The current limits on the parameters of these models allow for rather large branching ratios for several two and three-body hadronic decay modes of B_c, up to the 10^{-4} range in the minimal supersymmetric model with R-parity violation.

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S. Fajfer, J. Kamenik, P. Singer. 2004-07-20. New-Physics scenarios in $ΔS = 2$ decays of the B_c meson. https://doi.org/10.1103/physrevd.70.074022

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