New Light Windows for Sparticle Masses and Higgs Decays in the R Parity Violating MSSM

Understand

In supersymmetric models with R parity violation, constraints on superpartner masses are significantly weaker than in models which conserve R parity.

• We find in regions of parameter space where a neutral gaugino or third generation scalar is decoupled from the Z and/or traditional gaugino mass relationships do not hold allow some particles to be light enough to allow them to be the decay products of the Higgs.
• For example, surprisingly a stau could be lighter than 30 GeV if it decays hadronically.
• We estimate the Higgs bounds when one of these decays dominates and find allowed Higgs masses well below the current LEP bound on the standard model Higgs.