Right Handed Sneutrino Dark Matter in Inverse and Linear seesaw scenarios

TL;DR

This paper explores supersymmetric models with right-handed sneutrino dark matter candidates, analyzing their phenomenological viability and constraints from relic abundance, detection limits, and lepton flavor violation.

Contribution

It introduces models combining inverse and linear seesaw mechanisms with supersymmetry, assessing their dark matter properties and experimental constraints.

Findings

Right-handed sneutrinos can be viable WIMP dark matter candidates.

Models satisfy relic abundance and direct detection constraints.

Lepton flavor violation limits restrict model parameter space.

Abstract

We consider supersymmetric models in which the right-handed sneutrino is a viable WIMP dark matter candidate. These are either simple extensions of the Minimal Supersymmetric Standard Model or models with the addition of an extra U(1) group. All of them can explain small neutrino masses, through either the Inverse or the Linear Seesaw mechanism. We investigate the properties of the dark matter candidate naturally arising in these scenarios. We check for phenomenological bounds, such as correct relic abundance, consistency with direct detection cross section limits and laboratory constraints. Especially, we comment on limitations of the model space due to lepton flavour violating charged lepton decays.