Speaker
Description
The CMS experiment is collecting proton-proton collision data at a center-of-mass energy of 13.6 TeV during LHC Run 3. Resistive Plate Chambers (RPCs) are an important component of the CMS muon system, providing fast timing information for the muon trigger and contributing to muon reconstruction. This study presents an updated evaluation of the CMS RPC detector performance using Run 3 data, including additional data-taking periods beyond those previously reported. The performance is measured with the Tag-and-Probe method using Z boson decays into two muons. In this method, one well-reconstructed muon is used as the tag, while the other muon is used as the probe. The probe muon is extrapolated to the RPC detector and the RPC response is evaluated by matching detector hits to the extrapolated trajectory. The RPC detector performance is characterized through efficiency measurements and complementary response-related observables. The study considers the evolution of the detector performance with accumulated data and its dependence on probe-muon properties. This updated measurement provides additional information on the RPC detector response during the extended Run 3 data-taking period. The study contributes to the performance monitoring of the CMS RPC system and to the continued validation of its role in muon triggering and reconstruction.