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

, The ATLAS collaboration (2015) 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 (9). ISSN 1029-8479

[img]
Preview
PDF (art%3A10.1007%2FJHEP09%282015%29108)
art_3A10.1007_2FJHEP09_282015_29108.pdf - Published Version
Available under License Creative Commons Attribution.

Download (1MB)

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.

Item Type:
Journal Article
Journal or Publication Title:
Journal of High Energy Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
77906
Deposited By:
Deposited On:
22 Jan 2016 16:30
Refereed?:
Yes
Published?:
Published
Last Modified:
25 Nov 2020 03:26