Probing light sbottoms with B decays

We discuss recently reported experimental hints for a bottom squark with mass around 3.5 GeV decaying as b̃→cℓν̃∗. We correlate the sbottom lifetime with the decay rates for b→b̃νν̃∗ and b→b̃νν̃ in the framework of a minimal supersymmetric model extended by right-handed (s)neutrinos. Confronting our results with the well-measured semileptonic branching ratio of B mesons we conclude that the light sbottom interpretation of the experimental anomalies is ruled out, unless mb⩽mb̃+mν̃.