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.
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