Search for heavy neutral and charged leptons in e+e− annihilation at √s = 161 and √s= 172 GeV

A search for unstable neutral and charged heavy leptons as well as for stable charged heavy leptons has been made at center-of-mass energies √s = 161 and √s= 172 GeV with the L3 detector at LEP. No evidence for their existence was found. We exclude unstable neutral leptons of Dirac (Majorana) type...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 1997
Materias:
Ciencias Exactas
Física
leptons
large electron positron collider
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/81354
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-81354
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
leptons
large electron positron collider
spellingShingle Ciencias Exactas
Física
leptons
large electron positron collider
Dova, María Teresa
L3 Collaboration
Search for heavy neutral and charged leptons in e+e− annihilation at √s = 161 and √s= 172 GeV
topic_facet Ciencias Exactas
Física
leptons
large electron positron collider
description A search for unstable neutral and charged heavy leptons as well as for stable charged heavy leptons has been made at center-of-mass energies √s = 161 and √s= 172 GeV with the L3 detector at LEP. No evidence for their existence was found. We exclude unstable neutral leptons of Dirac (Majorana) type for masses below 78.0 (66.7), 78.0 (66.7) and 72.2 (58.2) GeV, if the heavy neutrino couples to the electron, muon or tau family, respectively. We exclude unstable charged heavy leptons for masses below 81.0 GeV for a wide mass range of the associated neutral heavy lepton. The production of stable charged heavy leptons with a mass less than 84.2 GeV is also excluded. If the unstable charged heavy lepton decays via mixing into a massless neutrino, we exclude masses below 78.7 GeV.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Search for heavy neutral and charged leptons in e+e− annihilation at √s = 161 and √s= 172 GeV
title_short Search for heavy neutral and charged leptons in e+e− annihilation at √s = 161 and √s= 172 GeV
title_full Search for heavy neutral and charged leptons in e+e− annihilation at √s = 161 and √s= 172 GeV
title_fullStr Search for heavy neutral and charged leptons in e+e− annihilation at √s = 161 and √s= 172 GeV
title_full_unstemmed Search for heavy neutral and charged leptons in e+e− annihilation at √s = 161 and √s= 172 GeV
title_sort search for heavy neutral and charged leptons in e+e− annihilation at √s = 161 and √s= 172 gev
publishDate 1997
url http://sedici.unlp.edu.ar/handle/10915/81354
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bdutipo_str Repositorios
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