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1 real negative results, null findings, and replication failures in Nuclear and particle physics. Atomic energy. Radioactivity. Search the index →

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Replication FailureOpen accessNuclear and particle physics. Atomic energy. Radioactivity

Search for excited tau leptons in the ττγ final state in proton-proton collisions at $$\sqrt{\text{s}}$$ = 13 TeV

The CMS collaboration, A. Hayrapetyan, A. Tumasyan et al. · 2025 · Journal of High Energy Physics

Abstract Results are presented for a test of the compositeness of the heaviest charged lepton, τ, using data collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 13 TeV at the CERN LHC. The data were collected in 2016–2018 and correspond to an integrated luminosity of 138 fb −1. This analysis searches for tau lepton pair production in which one of the tau leptons is produced in an excited state and decays to a ground state tau lepton and a photon. The event selection consists of two isolated tau lepton decay candidates and a high-energy photon. The mass of

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