Search for charginos and neutralinos in e+e- collisions at √s = 189 GeV

We report the result of a search for charginos and neutralinos, in e+e- collisions at 189 GeV centre-of-mass energy at LEP. No evidence for such particles is found in a data sample of 176 pb-1. Improved upper limits for these particles are set on the production cross sections. New exclusion contours...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2000
Materias:
Física
charginos
neutralinos
Minimal supersymmetric standard model
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/78279
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-78279
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Física
charginos
neutralinos
Minimal supersymmetric standard model
spellingShingle Física
Física
charginos
neutralinos
Minimal supersymmetric standard model
Dova, María Teresa
L3 Collaboration
Search for charginos and neutralinos in e+e- collisions at √s = 189 GeV
topic_facet Física
Física
charginos
neutralinos
Minimal supersymmetric standard model
description We report the result of a search for charginos and neutralinos, in e+e- collisions at 189 GeV centre-of-mass energy at LEP. No evidence for such particles is found in a data sample of 176 pb-1. Improved upper limits for these particles are set on the production cross sections. New exclusion contours in the parameter space of the Minimal Supersymmetric Standard Model are derived, as well as new lower limits on the masses of these supersymmetric particles. Under the assumptions of common gaugino and scalar masses at the GUT scale, we set an absolute lower limit on the mass of the lightest neutralino of 32.5 GeV, and a limit on the mass of the lightest chargino of 67.7 GeV for M2 < 2 TeV.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Search for charginos and neutralinos in e+e- collisions at √s = 189 GeV
title_short Search for charginos and neutralinos in e+e- collisions at √s = 189 GeV
title_full Search for charginos and neutralinos in e+e- collisions at √s = 189 GeV
title_fullStr Search for charginos and neutralinos in e+e- collisions at √s = 189 GeV
title_full_unstemmed Search for charginos and neutralinos in e+e- collisions at √s = 189 GeV
title_sort search for charginos and neutralinos in e+e- collisions at √s = 189 gev
publishDate 2000
url http://sedici.unlp.edu.ar/handle/10915/78279
work_keys_str_mv AT dovamariateresa searchforcharginosandneutralinosineecollisionsats189gev
AT l3collaboration searchforcharginosandneutralinosineecollisionsats189gev
bdutipo_str Repositorios
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