Abstract

In bilinear R-parity violation (BRpV), in which the superpotential includes a bilinear term between the lepton doublet and the up-type Higgs superfields, a sneutrino LSP can decay into pairs of heavy standard model states (Ws, Zs, tops or Higgs bosons), neutrinos or different-flavor charged lepton modes (l(i)l(j)). These finals states can dominate over the traditionally considered bottom pair final state and would lead to unique and novel supersymmetric signals: multileptons events or pairs of heavy standard model fields. We investigate this possibility and find that the branching ratio into these states dominates when the bilinear term is much smaller than the sneutrino vacuum expectation value for a given sneutrino flavor. When BRpV is the only source of neutrino masses these decays can only dominate for one of the sneutrino generations. Relaxing this constraint opens these channels for all three generations.