Search for excited leptons in proton-proton collisions at √s=7TeV with the ATLAS detector

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Abstract

The ATLAS detector is used to search for excited leptons in the electromagnetic radiative decay channel *→γ. Results are presented based on the analysis of pp collisions at a center-of-mass energy of 7 TeV corresponding to an integrated luminosity of 2.05fb-1. No evidence for excited leptons is found, and limits are set on the compositeness scale Λ as a function of the excited lepton mass m *. In the special case where Λ=m *, excited electron and muon masses below 1.87 TeV and 1.75 TeV are excluded at 95% C.L., respectively. © 2012 CERN.

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Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., … Zwalinski, L. (2012). Search for excited leptons in proton-proton collisions at √s=7TeV with the ATLAS detector. Physical Review D - Particles, Fields, Gravitation and Cosmology, 85(7). https://doi.org/10.1103/PhysRevD.85.072003

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