R-parity violating decays of the Top-Quark and the Top-Squark at the Tevatron

Abstract

We study unconventional decays of the top-quark and the top-squark in the framework of SUSY models with broken R-parity. The model under study is the MSSM with an additional bilinear term that breaks R-parity. In this model the top-squark behaves similar to a third generation leptoquark. We demonstrate that existing Tevatron data on the top give rise to restrictions on the SUSY parameter space. In particular, we focus on scenarios where the tau-neutrino mass is smaller than 1 eV. We give an exclusion plot derived from the leptoquark searches at Tevatron.

6 pages, 4 figures. To appear in the proceedings of the workshop ''Physics at Run II: Supersymmetry/Higgs Fermilab, Feb. - Nov. 1998''