Stop Decays with R-Parity Violation and the Neutrino Mass

TL;DR

This paper investigates how R-parity violation in supersymmetry can explain neutrino masses and significantly alter top squark decay patterns, with implications for collider experiments.

Contribution

It demonstrates that R-parity violating decays of the top squark can dominate over standard decays, considering non-universal GUT boundary conditions.

Findings

Rp violating decay $ ilde t_1 -> b au$ can dominate

Decay patterns depend on boundary conditions

Implications for collider searches

Abstract

The atmospheric and solar neutrino problems can be explained in a supersymmetric scenario where R-parity is broken bilinearly. Within this context we explore the decays of the top squark. We find that the Rp violating decay $\tilde t_1 -> b \tau$ can easily dominate over the Rp conserving decay $\tilde t_1 -> c \tilde\chi^0_1$ and sometimes also over the decay $\tilde t_1 -> b \tilde\chi^+_1$. We study the implications of non-universal boundary conditions at the GUT scale.