High Energy / Nuclear Theory / RIKEN Seminars

Leona Woods Awardee talk, Hitting the Thermal Target with leptophilic dark matter [In person only, Small Seminar Room]

by Cari Cesarotti (MIT)

US/Eastern
Small Seminar Room (Abstract: We study future lepton collider prospects for testing predictive models of leptophilic dark matter candidates with a thermal origin. We calculate experimental milestones for testing the parameter space compatible with freeze-out and the associated collider signals at past, present, and future facilities. This analysis places new limits on such models by leveraging the utility of lepton colliders. At ee machines, we make projections using precision Z-pole observables from ee to ll + missing energy signatures at LEP and future projections for FCC-ee in these channels. Additionally, a muon collider could also probe new thermal relic parameter space in this scenario via mu mu to X + missing energy where X is any easy identifiable SM object. Collectively, these processes can probe much all of the parameter space for which DM direct annihilation to ll yields the observed relic density in Higgs-like models with mass-proportional couplings to charged leptons.)

Small Seminar Room

Abstract: We study future lepton collider prospects for testing predictive models of leptophilic dark matter candidates with a thermal origin. We calculate experimental milestones for testing the parameter space compatible with freeze-out and the associated collider signals at past, present, and future facilities. This analysis places new limits on such models by leveraging the utility of lepton colliders. At ee machines, we make projections using precision Z-pole observables from ee to ll + missing energy signatures at LEP and future projections for FCC-ee in these channels. Additionally, a muon collider could also probe new thermal relic parameter space in this scenario via mu mu to X + missing energy where X is any easy identifiable SM object. Collectively, these processes can probe much all of the parameter space for which DM direct annihilation to ll yields the observed relic density in Higgs-like models with mass-proportional couplings to charged leptons.