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  • PhysRevD.85.072003

    Rights statement: Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2012 CERN, for the ATLAS Collaboration

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

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Article number072003
<mark>Journal publication date</mark>27/04/2012
<mark>Journal</mark>Physical Review D
Issue number7
Volume85
Number of pages23
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The ATLAS detector is used to search for excited leptons in the electromagnetic radiative decay channel ℓ∗→ℓγ. 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−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 mℓ∗. In the special case where Λ=mℓ∗, excited electron and muon masses below 1.87 TeV and 1.75 TeV are excluded at 95% C.L., respectively.

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Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2012 CERN, for the ATLAS Collaboration