Dark Matter EFT, the Third -- Neutrino WIMPs

TL;DR

This paper explores sterile neutrinos as dark matter candidates within an EFT framework, showing they can account for relic density while satisfying detection constraints, and discusses how LHC data can differentiate models.

Contribution

It introduces an EFT approach for sterile neutrino dark matter that aligns with relic density and detection constraints, and analyzes model distinctions via LHC measurements.

Findings

Sterile neutrinos can produce the observed relic density.

EFT models include gauged third-generation B-L and leptoquarks.

LHC data can distinguish between different underlying models.

Abstract

Sterile neutrinos coupling only to third-generation fermions are attractive dark matter candidates. In an EFT approach we demonstrate that they can generate the observed relic density without violating constraints from direct and indirect detection. Such an EFT represents a gauged third-generation $B-L$ model, as well as third-generation scalar or vector leptoquarks. LHC measurements naturally distinguish the different underlying models.