Constraints on Majorana Dark Matter from the LHC and IceCube

TL;DR

This paper investigates constraints on Majorana fermion dark matter using collider, direct detection, and neutrino telescope data, introducing a new method to interpret IceCube results for simplified models.

Contribution

It develops a novel approach to derive limits from IceCube data on Majorana dark matter models with vector mediators, complementing collider and direct detection constraints.

Findings

LHC and IceCube provide complementary constraints on dark matter.

New limits on dark matter and mediator masses are derived.

Method for interpreting IceCube data for various final states is introduced.

Abstract

We consider a simplified model for Majorana fermion dark matter and explore constraints from direct, indirect and LHC collider searches. The dark matter is assumed to couple to the Standard Model through a vector mediator with axial-vector interactions. We provide detailed analyses of LHC mono-jet searches and IceCube limits on dark matter annihilation in the Sun. In particular, we develop a method for calculating limits on simplified WIMP dark matter models from public IceCube data, which are only available for a limited number of Standard Model final states. We demonstrate that LHC and IceCube searches for Majorana dark matter are complementary and derive new limits on the dark matter and mediator masses, including in addition constraints from LHC di-jet searches, direct detection and the dark matter relic density.