Ponente
Descripción
NA64 is a fixed target experiment at CERN Super Proton Synchrotron accelerator using complementary high-energy beams: e$^{-/+}$, muon, and hadron beams. The experiment performed the first search for dark sectors using a high-energy muon beam and the novel missing-momentum technique, relying on a scintillator-based trigger. The signal signature consists of an outgoing muon that has lost a significant fraction of its initial momentum. In this talk, we will present ongoing studies towards online momentum reconstruction and the development of a Graphics Processing Unit (GPU)-based trigger, carried out in collaboration with ETHZ and inspired by the Allen framework developed for LHCb. This approach aims to enable efficient event selection at beam intensities up to a factor of 20 higher than those used in the first search.
