Dark matter in a SUSY left-right model

TL;DR

This paper explores a supersymmetric left-right model where high-scale symmetry breaking leads to R-parity conservation, affecting neutralino relic abundance and offering new insights into dark matter candidates.

Contribution

It introduces a SUSY left-right model with high-scale triplet breaking that naturally conserves R-parity, altering sparticle spectra and dark matter relic density calculations.

Findings

Altered sparticle spectra compared to MSSM

Impact on neutralino relic abundance

Analysis of co-annihilation regions

Abstract

Supersymmetric left-right models are well motivated extensions of the Minimal Supersymmetric Standard Model since they automatically contain the ingredients to explain the observed neutrino masses and mixings. Here we study a SUSY model in which the left-right symmetry is broken by triplets at a high scale leading to automatic R-parity conservation at low energies. The sparticle spectra in this model differ from the usual constrained MSSM expectations and these changes affect the relic abundance of the lightest neutralino. We discuss two examples: (1) the standard stau co-annihilation region, and (2) flavoured co-annihilation.