8–13 Mar 2006
Indian Institute of Science
Europe/Zurich timezone

Top squark and neutralino decays in a R-parity violating model constrained by neutrino oscillation data

10 Mar 2006, 11:40
20m
Hall C (Indian Institute of Science)

Hall C

Indian Institute of Science

C. V. Raman Road, Bangalore 560012, India
Oral SUSY Particles SUSY Particles

Speaker

Mr Sujoy Poddar (Jadavpur University)

Description

In a R-parity violating (RPV) model of neutrino mass with three bilinear couplings mu_i and three trilinear couplings lambda'_{i33}, where i is the lepton index, we find six generic scenarios each with a distinctive pattern of the trilinear couplings consistent with the oscillation data. These patterns may be reflected in direct RPV decays of the lighter top squark or in the RPV decays of the lightest superparticle, assumed to be the lightest neutralino. Typical signal sizes at the Tevatron RUN II and the LHC have been estimated and the results turn out to be encouraging. The predictions of this model also depend on the parameters of the R-parity conserving (RPC) sector. Measurement of these parameters kinematically at the LHC and/or ILC would further sharpen the predictions. Finally the Branching Ratios (BRs) of the RPV decays turn out to be rather suppressed in some regions of parameter space. Measurement of the BRs of these rare decay modes in the clean environment of the ILC would then be a challenging programme.

Primary author

Mr Sujoy Poddar (Jadavpur University)

Co-authors

Prof. Amitava Datta (Jadavpur University) Dr Siba Das (Jadavpur University)

Presentation materials