Minimal supergravity sneutrino dark matter and inverse seesaw neutrino masses

TL;DR

This paper explores how minimal supergravity models with inverse seesaw neutrino masses favor sneutrinos as dark matter candidates, aligning neutrino mass generation with detectable relic dark matter.

Contribution

It demonstrates that inverse seesaw mechanisms in minimal supergravity naturally lead to sneutrino dark matter being the lightest superparticle, unlike conventional models.

Findings

Sneutrino is more likely to be the lightest superparticle in inverse seesaw models.

Such models reconcile small neutrino masses with relic dark matter abundance.

Predicted direct detection rates are accessible in experiments.

Abstract

We show that within the inverse seesaw mechanism for generating neutrino masses minimal supergravity is more likely to have a sneutrino as the lightest superparticle than the conventional neutralino. We also demonstrate that such schemes naturally reconcile the small neutrino masses with the correct relic sneutrino dark matter abundance and accessible direct detection rates in nuclear recoil experiments.