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Zhicai Zhang (CalTech) “Search for Long-Lived Particles with Precision Timing Detectors”
December 8, 2020 @ 4:00 pm - 5:00 pm
Searching for new physics beyond the standard model (BSM) has been one of the main goals of the LHC. With no new physics found in many SUSY and Exotica searches for prompt BSM particles from the LHC data, I will present a new BSM search approach that is looking for new particles with a long lifetime. The search is looking for SUSY long-lived particles that decay to photons, with the final state photon being time-delayed compared to prompt photon background. The search relies on the precise measurement of the photon arrival time at the calorimeter, and I will present the study of the timing performance of current CMS ECAL, and also developments of future precision timing detectors to be installed for CMS Phase 2 upgrade as well as precision timing detectors for future experiments.
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