Measurements of the HLT performance of displaced muons using Cosmics data

  • Project: CMS Detector Performance Note (CMS-DP-2019-028)
  • Collaboration: CMS (CERN, Geneva, Switzerland)
  • Date: September 2019
  • Links: CERN document server
  • Keywords: high-energy particle physics, detector performance studies, displaced muons, long-lived particles, data analysis

Abstract

This note presents the performance of a dedicated displaced standalone muon reconstruction at the High Level Trigger in cosmics data recorded with the CMS detector in 2016. The results are presented as a function of the impact parameter of the offline reconstructed muon. A double muon trigger based on this muon reconstruction has been developed for the search of long-lived particles decaying into dimuons with 2018 data. The trigger relies only on information from the muon detectors to allow sensitivity to decays beyond the inner tracking detector.