Speaker
Description
ECS Lightning talk
Hidden Valley models propose alternative BSM scenarios to explain the nature of Dark Matter evading the phase-space currently probed by WIMPs searches. Under the assumption of a QCD-like confining dark sector, novel experimental signatures emerge, characterized by sprays of particles resembling hadronic jets containing stable invisible dark matter bound states. These semi-visible jets have been studied theoretically and experimentally in the fully hadronic signature where the unstable dark bound states can only decay promptly back to Standard Model quarks. We present a simplified model based on two messenger fields separated by a large mass gap allowing dark bound states to decay into pairs of oppositely charged leptons [Eur. Phys. J. C 82, 793 (2022)]. We propose a search strategy targeting this new signature leveraging the enhanced leptonic content of these anomalous jets, and discuss the orthogonality with respect to the existing searches.
