Limits on electrophilic Dark Matter from LHC Monojets

TL;DR

This paper investigates constraints on electroweak-interacting dark matter particles at the LHC, focusing on monojet signatures and models where the dark matter couples via the Z boson, inspired by gamma-ray line hints.

Contribution

It compares three models of neutrino-like WIMPs with Z-mediated interactions to establish LHC limits, linking collider data with astrophysical signals.

Findings

LHC monojet searches place bounds on Z-coupled dark matter models.

Constraints are derived for neutrino-like WIMP scenarios.

Results connect collider limits with gamma-ray line observations.

Abstract

Searches for WIMP Dark Matter particle at the LHC are considered from the point of view of the existence of a Dark Matter particle which couples primarily through the heavy gauge boson Z, as suggested by recent tentative evidence for a 130 GeV gamma line in the FermiLAT data. We compare three models in which the WIMP is a neutrino-like particle and consider the limits on such particle and interactions from LHC.