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Scientific article
Open access
English

Search for heavy lepton resonances decaying to a Z boson and a lepton in pp collisions at √s = 8 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 1509, p. 108-146
Collection
  • Open Access - SCOAP3
Publication date2015
Abstract

A search for heavy leptons decaying to a Z boson and an electron or a muon is presented. The search is based on pp collision data taken at √s = 8 TeV by the ATLAS experiment at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 20.3 fb −1 . Three high-transverse-momentum electrons or muons are selected, with two of them required to be consistent with originating from a Z boson decay. No significant excess above Standard Model background predictions is observed, and 95% confidence level limits on the production cross section of high-mass trilepton resonances are derived. The results are interpreted in the context of vector-like lepton and type-III seesaw models. For the vector-like lepton model, most heavy lepton mass values in the range 114–176 GeV are excluded. For the type-III seesaw model, most mass values in the range 100–468 GeV are excluded.

Keywords
  • Hadron-Hadron Scattering
Citation (ISO format)
ATLAS Collaboration. Search for heavy lepton resonances decaying to a Z boson and a lepton in pp collisions at √s = 8 TeV with the ATLAS detector. In: The journal of high energy physics, 2015, vol. 1509, p. 108–146. doi: 10.1007/JHEP09(2015)108
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Article (Published version)
Identifiers
ISSN of the journal1029-8479
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Technical informations

Creation10/01/2015 10:01:10 AM
First validation10/01/2015 10:01:10 AM
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