Speaker
Ruth Schäfer
Description
At collider experiments, long-lived particles may decay displaced within the detector or leave the detector as missing energy, depending on their lifetime and on the detector geometry. To exploit this complementarity, we propose a new search strategy for invisible ALPs in $B^+\to K^+ a$ decays at Belle II. We compare our predictions with existing and future searches for displaced vertices from $B^+\to K^+ a(\to\mu^+\mu^-)$ decays. This example demonstrates how to maximize the sensitivity to long-lived particles over a wide range of lifetimes by combining searches with displaced vertices and missing energy.
Authors
Anastasiia Filimonova
(Nikhef)
Ruth Schäfer
Susanne Westhoff
(Heidelberg University)
Torben Ferber
(KIT)
