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

Author(s)
Taylor, Frank E
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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[superscript −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.
Date issued
2015-09
URI
http://hdl.handle.net/1721.1/106869
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag/SISSA
Citation
The ATLAS collaboration et al. “Search for Heavy Lepton Resonances Decaying to a Z Boson and a Lepton in Pp Collisions at √S = 8 TeV with the ATLAS Detector.” Journal of High Energy Physics 2015.9 (2015): n. pag.
Version: Final published version
ISSN
1029-8479
1126-6708

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