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

Details Search for excited leptons in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector Search for excited leptons in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector

2012-01-16

arxiv.org/abs/1201.3293v1

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages plus author list (22 pages total), 8 figures, 2 tables, submitted to Physical Review D

Scientific paper

The ATLAS detector is used to search for excited leptons in the electromagnetic radiative decay channel l* --> l+gamma. 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 2.05/fb. No evidence for excited leptons is found, and limits are set on the compositeness scale Lambda as a function of the excited lepton mass m_l*. In the special case where Lambda = m_l*, excited electron and muon masses below 1.87 TeV and 1.75 TeV are excluded at 95% C.L., respectively.

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