# Limits on $R$-parity Violation in High Scale Supersymmetry

## TL;DR

This paper examines the constraints on $R$-parity violation within high-scale supersymmetry models where sparticles are too heavy to influence early universe cosmology, focusing on alternative bounds from particle experiments and asymmetry preservation.

## Contribution

It provides a detailed analysis of $R$-parity violation limits in high-scale SUSY, highlighting how cosmological constraints are relaxed and emphasizing the role of higher-dimensional operators and asymmetry preservation.

## Key findings

- Cosmological limits are relaxed in high-scale SUSY.
- Particle experiments constrain $R$-parity violation via higher-dimensional operators.
- Preservation of $B-L$ asymmetry imposes additional constraints.

## Abstract

We revisit the limits on $R$-parity violation in the minimal supersymmetric standard model. In particular, we focus on the high-scale supersymmetry scenario in which all the sparticles are in excess of the inflationary scale of approximately $10^{13}$ GeV, and thus no sparticles ever come into thermal equilibrium. In this case the cosmological limits, stemming from the preservation of the baryon asymmetry that have been previously applied for weak scale supersymmetry, are now relaxed. We argue that even when sparticles are never in equilibrium, $R$-parity violation is still constrained via higher dimensional operators by neutrino and nucleon experiments and/or insisting on the preservation of a non-zero $B-L$ asymmetry.