LHC prospects for minimal decaying Dark Matter

TL;DR

This paper explores the potential signals of minimal decaying dark matter models at the LHC, focusing on how these models produce and decay dark matter particles, and assesses their detectability through collider and indirect detection methods.

Contribution

It introduces a minimal decaying dark matter framework with specific interactions, analyzing its production, decay channels, and experimental signatures at the LHC and in indirect detection.

Findings

LHC can potentially detect signals consistent with decaying dark matter models.

Parameter regions compatible with cosmology are within LHC discovery reach.

Decaying dark matter could be observed through combined collider and indirect detection signals.

Abstract

We study the possible signals at LHC of the minimal models of decaying dark matter. Those models are characterized by the fact that DM interacts with SM particles through renormalizable coupling with an additional heavier charged state. Such interaction allows to produce a substantial abundance of DM in the early Universe via the decay of the charged heavy state, either in- or out-of-equilibrium. Moreover additional couplings of the charged particle open up decay channels for the DM, which can nevertheless be sufficiently long-lived to be a good DM candidate and within reach of future Indirect Detection observations. We compare the cosmologically favored parameter regions to the LHC discovery reach and discuss the possibility of simultaneous detection of DM decay in Indirect Detection.