Summary
This theoretical study examines lepton-flavoured dark matter models in the regime of feeble interactions, where freeze-in production and suppressed lepton-flavour-violating processes generate distinctive signatures at proposed muon collider facilities. The authors demonstrate that competing freeze-in and freeze-out mechanisms constrain dark matter mass to TeV scales and produce a rich phenomenology spanning prompt decays and long-lived particle signals. The work establishes this model as a broadly applicable benchmark for future collider detector design and systematic studies.
UK applicability
This is a theoretical particle physics study with no direct applicability to UK agricultural, soil health, nutrient density, or food systems research. It does not address farming, nutrition, or human health outcomes.
Key measures
Dark matter mass bounds (TeV scales), signal yield in prompt decay region, displaced lepton signals, charged track counts in detector, kinematic cuts for background rejection, discovery significance (5σ criterion)
Outcomes reported
The study identifies signatures of lepton-flavoured dark matter at a future muon collider, ranging from prompt decay signals to long-lived particle signatures depending on mediator lifetime. The interplay of dark matter freeze-in and mediator freeze-out production mechanisms establishes an upper bound of approximately TeV scales on dark matter mass.
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