Journal article
Search for unstable sequential neutral and charged heavy leptons in e+e− annihilation at s=130 and 136 GeV
Abstract
A search for unstable sequential neutral and charged heavy leptons has been made at center-of-mass energies 130 and 136 GeV with the L3 detector at LEP. The neutral leptons are assumed to decay via mixing to electrons and muons. No evidence for their existence was found. We exclude unstable Dirac neutrinos for masses below 59.3 (57.9) GeV and unstable Majorana neutrinos below 48.6 (47.2) GeV if the neutrino couples to the electron(muon) family. …
Authors
Collaboration L; Acciarri M; Adam A; Adriani O; Aguilar-Benitez M; Ahlen S; Alpat B; Alcaraz J; Alemanni G; Allaby J
Journal
Physics Letters B, Vol. 377, No. 4, pp. 304–312
Publisher
Elsevier
Publication Date
June 1996
DOI
10.1016/0370-2693(96)00466-2
ISSN
0370-2693