S Chatrchyan, V Khachatryan, AM Sirunyan… - Physics Letters B, 2013 - Elsevier
… excited electrons (muons), with masses ranging from 0.6 to 2 TeV, are 1.48 to 1.24 fb (1.31 to
1.11 fb). Excited leptons … contact interaction scale equals the excited lepton mass. The limits …