MeV neutrino dark matter in the SLIM model

TL;DR

This paper investigates a variant of the SLIM model with MeV to GeV dark matter candidates, analyzing its parameter space under current constraints and exploring direct detection prospects via electron recoil.

Contribution

It extends the SLIM model by including additional scalars and neutrino generations, providing a detailed analysis of its viability and detection potential.

Findings

Dark matter candidate mass in MeV to GeV range.

Predicted cross sections are too low for current detection.

Model remains consistent with collider and astrophysical constraints.

Abstract

We explore the parameter space of a variant of the SLIM model, which extends the SM with a singlet and a doublet of complex scalars and two generations of right-handed neutrinos, the lightest of which has a mass in the MeV to GeV region and plays the role of Dark Matter candidate. We impose the current collider and astrophysical constrains, as well as bounds from Lepton Flavour Violating experiments. We also consider the discovery potential in the XENON experiment exploiting the electron recoil as a possible direct detection signal. Despite the DM in this model being leptophilic, the predicted cross sections are too low due to the heavy charged mediator.