Dark Matter in B-L Extended MSSM Models

TL;DR

This paper investigates dark matter candidates within a supersymmetric B-L extended MSSM, showing that certain neutralinos can account for observed relic abundance without conflicting with other constraints.

Contribution

It introduces and analyzes B-L gaugino and Higgsino dark matter candidates in a supersymmetric extension of the MSSM, demonstrating their viability for relic abundance.

Findings

B-L gaugino and Higgsino can be viable dark matter candidates

These particles can match observed relic abundance

Prospects for direct detection are discussed

Abstract

We analyze the dark matter problem in the context of supersymmetric U(1)_{B-L} model. In this model, the lightest neutalino can be the B-L gaugino widetilde {Z}_{B-L} or the extra Higgsinos widetilde{chi}_{1,2} dominated. We compute the thermal relic abundance of these particles and show that, unlike the LSP in MSSM, they can account for the observed relic abundance with no conflict with other phenomenological constraints. The prospects for their direct detection, if they are part of our galactic halo, are also discussed.