Speaker
Description
Dark showers from strongly interacting dark sectors that confine at the GeV scale can give rise to novel signatures at electron-positron colliders. In my talk, I will discuss the sensitivity of B factory experiments to dark showers produced through an effective interaction arising from a heavy off-shell mediator. I will show that a prospective search for displaced vertices at Belle II can improve the sensitivity to dark showers substantially compared to existing searches for GeV-scale long-lived particles, promptly produced resonances or single photons. Moreover, I will argue that a search for light long-lived particles at LHCb can resolve the underlying structure of the effective interaction, highlighting the complementarity of LHC and intensity frontier experiments.
