Neglected heavy leptons at the LHC

Abstract

New heavy leptons with standard model gauge couplings have well determined cross sections for pair production. A standard pattern of mass mixing implies that the most likely decays are ${\tau }^{\prime }\to W{\nu }^{\prime }$ and ${\nu }^{\prime }\to W\tau$. Interestingly there have been no direct searches for heavy leptons with these decays at the LHC. However comparison with several multi-lepton searches allow us to set new limits on the heavy lepton masses. Three observed excesses in the signal regions prevent us from setting stronger limits.

14 pages, 6 figures, published version

References in corpus (12)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• Event generation with SHERPA 1.1
• Herwig++ Physics and Manual
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• Search for anomalous production of events with three or more leptons in pp collisions at sqrt(s) = 8 TeV
• Search for heavy Majorana neutrinos in mu+mu+[mu-mu-]+jets and e+e+[e-e-]+jets events in pp collisions at sqrt(s) = 7 TeV
• Search for heavy lepton partners of neutrinos in proton-proton collisions in the context of the type III seesaw mechanism
• Tau Custodian searches at the LHC
• The accidental Higgs
• Searches for Fourth Generation Charged Leptons

Cited by in corpus (2)

• Prospects for vectorlike leptons at future proton-proton colliders
• Distinctive Heavy Higgs Decays