Jul 18 – 22, 2022
Europe/Zurich timezone

Forecasting dark showers at Belle II

Jul 18, 2022, 2:00 PM



Elias Bernreuther (Fermilab)


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.

Primary author

Elias Bernreuther (Fermilab)


Kai Böse (RWTH Aachen University) Torben Ferber (KIT) Christopher Hearty (University of British Columbia (CA)) Felix Kahlhoefer (Karlsruhe Institute of Technology) Alessandro Morandini (RWTH Aachen University) Kai Schmidt-Hoberg (Deutsches Elektronen-Synchrotron DESY)

Presentation materials