Search for heavy neutral and charged leptons in e+e- annihilation at √s = 183 and 189 GeV

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...

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Autores principales: Dova, María Teresa, Lacentre, Pablo E., L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 1999
Materias:
Ciencias Exactas
Física
unstable neutral lepton
stable charged lepton
L3 detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/78128
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-78128
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
unstable neutral lepton
stable charged lepton
L3 detector
spellingShingle Ciencias Exactas
Física
unstable neutral lepton
stable charged lepton
L3 detector
Dova, María Teresa
Lacentre, Pablo E.
L3 Collaboration
Search for heavy neutral and charged leptons in e+e- annihilation at √s = 183 and 189 GeV
topic_facet Ciencias Exactas
Física
unstable neutral lepton
stable charged lepton
L3 detector
description 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, respectively. We exclude unstable charged heavy leptons for masses below 93.9 GeV for a wide range of the associated neutral heavy lepton mass. If the unstable charged heavy lepton decays to a light neutrino, we exclude masses below 92.4 GeV. The production of stable charged heavy leptons with mass less than 93.5 GeV is also excluded.
format Articulo
Articulo
author Dova, María Teresa
Lacentre, Pablo E.
L3 Collaboration
author_facet Dova, María Teresa
Lacentre, Pablo E.
L3 Collaboration
author_sort Dova, María Teresa
title Search for heavy neutral and charged leptons in e+e- annihilation at √s = 183 and 189 GeV
title_short Search for heavy neutral and charged leptons in e+e- annihilation at √s = 183 and 189 GeV
title_full Search for heavy neutral and charged leptons in e+e- annihilation at √s = 183 and 189 GeV
title_fullStr Search for heavy neutral and charged leptons in e+e- annihilation at √s = 183 and 189 GeV
title_full_unstemmed Search for heavy neutral and charged leptons in e+e- annihilation at √s = 183 and 189 GeV
title_sort search for heavy neutral and charged leptons in e+e- annihilation at √s = 183 and 189 gev
publishDate 1999
url http://sedici.unlp.edu.ar/handle/10915/78128
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AT lacentrepabloe searchforheavyneutralandchargedleptonsineeannihilationats183and189gev
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bdutipo_str Repositorios
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