Journal article
Search for heavy neutral and charged leptons in e+e− annihilation at s = 183 and 189 GeV
Abstract
A search for unstable neutral and charged heavy leptons as well as for stable charged heavy leptons is performed at center-of-mass energies s = 183 and 189 GeV with the L3 detector at LEP. No evidence for their existence is found. We exclude neutral heavy leptons which couple to the electron, muon or tau family, of the Dirac type for masses below 92.4, 93.3 and 83.3 GeV, and of the Majorana type for masses below 81.8, 84.1 and 73.5 GeV, …
Authors
Collaboration L; Acciarri M; Achard P; Adriani O; Aguilar-Benitez M; Alcaraz J; Alemanni G; Allaby J; Aloisio A; Alviggi MG
Journal
Physics Letters B, Vol. 462, No. 3-4, pp. 354–364
Publisher
Elsevier
Publication Date
September 1999
DOI
10.1016/s0370-2693(99)00922-3
ISSN
0370-2693