Discovering Electroweak Interacting Dark Matter at Muon Colliders using Soft Tracks

TL;DR

This paper shows that a 3 TeV Muon Collider can detect soft tracks from quasi-degenerate charged states in minimal dark matter models, enabling discovery of Higgsinos and similar candidates that are difficult to observe at hadron colliders.

Contribution

The study demonstrates the potential of a 3 TeV Muon Collider to detect soft tracks from charged states in minimal dark matter models, advancing collider search strategies.

Findings

Muon Collider can detect soft tracks from charged states.

Detection enables discovery of Higgsinos and similar dark matter candidates.

Soft track detection is feasible at 3 TeV Muon Colliders.

Abstract

Minimal Dark Matter models feature one neutral particle that serves as a thermal relic dark matter candidate, as well as quasi-degenerate charged states with TeV masses. When the charged states are produced at colliders, they can decay into dark matter and a low-momentum (soft) charged particle, which is challenging to reconstruct at hadron colliders. We demonstrate that a 3 TeV Muon Collider is capable of detecting these soft tracks, enabling the discovery of thermal Higgsinos and similar dark matter candidates which constitute highly motivated scenarios for future collider searches.