Flavor violating bosonic squark decays at LHC

Abstract

We study quark flavor violation (QFV) in the squark sector of the Minimal Supersymmetric Standard Model (MSSM). We assume mixing between the second and the third squark generations, i.e. [Formula: see text] mixing. We focus on QFV effects in bosonic squark decays, in particular on the decay into the lightest Higgs boson [Formula: see text], where [Formula: see text] are the lightest up-type squarks. We show that the branching ratio of this QFV decay can be quite large (up to 50%) due to large QFV trilinear couplings, and large [Formula: see text] and [Formula: see text] mixing, despite the strong constraints on QFV from B meson data. This can result in characteristic QFV final states with significant rates at LHC (14 TeV), such as [Formula: see text] and [Formula: see text]. The QFV bosonic squark decays can have an influence on the squark and gluino searches at LHC.