Cosmological constraints on Dark Matter models for collider searches

Understand

Searches for Dark Matter at the LHC are commonly described in terms of simplified models with scalar, pseudo-scalar, vector and axial-vector mediators.

• In this work we explore the constraints imposed on such models from the observed Dark Matter relic abundance.
• We present these constraints over a range of mediator masses relevant for the LHC and for future, higher energy colliders.
• We additionally compute bounds from a photon line search for the decay of a pseudo-scalar mediator to di-photons that includes the mediator mass region near 750 GeV.