Work

Enabling thermal dark matter within the vanilla L μ − L τ model

Year: 2025

Type: article

Abstract: Thermal dark matter is a compelling setup that has been probed by a multitude of experiments, mostly in the GeV–TeV mass range. The thermal paradigm in the sub-GeV range is about to experience the same experimental test with the next generation of low-energy accelerators and light dark matter detectors. Motivated by this, we investigate thermal dark matter in the L μ − L τ and assess how the introduction of a matter-dominated era impacts the parameter that yields the correct relic density. Interestingly, we show that the projected experiments, such as the Muon (Synchrotron) Ion Collider, Future Circular Collider-ee, and Light Dark Matter eXperiment, will probe a large region of the viable parameter space that yields the correct relic density. In the GeV–TeV mass regime, the usual large-scale detectors push the sensitivity. Our work highlights the rich interplay between early-Universe dynamics, dark matter phenomenology, and the discovery potential of next-generation experiments.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/8g85-c8sh

Authors: Nicolás Bernal, Jacinto P. Neto, Javier Silva-Malpartida, Farinaldo S. Queiroz