Compact Muon Solenoid
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| CMS-PAS-EXO-23-015 | ||
| Search for vector-like leptons with long-lived particle decays in the CMS muon system | ||
| CMS Collaboration | ||
| 20 July 2024 | ||
| Abstract: This note presents a search for vector-like leptons (VLLs), which in turn decay into a long-lived pseudoscalar and a standard model tau lepton. The pseudoscalar with a mass of 2 GeV exclusively decays into a pair of photons, and is identified using the muon detector shower signature. The data analysis is carried out using a dataset of proton-proton collisions at 13 TeV collected by the CMS experiment in 2016-2018, corresponding to an integrated luminosity of 138 fb−1. Selected events contain at least one reconstructed muon detector hit cluster and at least one reconstructed hadronic tau lepton. No significant excess of data events are observed with respect to the background expectation, and 95% CL limits on the vector-like lepton production cross section are derived as a function of the VLL mass and pseudoscalar lifetime. Observed (expected) exclusion of the VLL mass is up to around 690 (640) GeV, depending on the pseudoscalar lifetime. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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