Search for charginos and neutralinos with the DELPHI detector at LEP

Searches for charginos and neutralinos are presented, based on the data samples recorded in 1999 and 2000 by the DELPHI detector at centre-of-mass energies from 192 to 209 GeV. No evidence for a signal was found. The lower chargino mass limits are 5-6 GeV/c/sup 2/ higher than those obtained at a cen...

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Detalles Bibliográficos
Autor principal: Alderweireld, T
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1142/S0217751X01008060
http://cds.cern.ch/record/548102
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author Alderweireld, T
author_facet Alderweireld, T
author_sort Alderweireld, T
collection CERN
description Searches for charginos and neutralinos are presented, based on the data samples recorded in 1999 and 2000 by the DELPHI detector at centre-of-mass energies from 192 to 209 GeV. No evidence for a signal was found. The lower chargino mass limits are 5-6 GeV/c/sup 2/ higher than those obtained at a centre-of-mass energy of 189 GeV. The ( mu , M/sub 2/) MSSM domain excluded by combining the chargino searches with neutralino searches at the Z resonance implies a limit on the mass of the lightest neutralino which, for a heavy sneutrino, is constrained to be above 37.6 GeV/c/sup 2/ for tan beta >or=1. Upper limit at 95% CL on the neutralino production cross-section times branching fraction are derived. (3 refs).
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
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spelling cern-5481022019-09-30T06:29:59Zdoi:10.1142/S0217751X01008060http://cds.cern.ch/record/548102engAlderweireld, TSearch for charginos and neutralinos with the DELPHI detector at LEPParticle Physics - ExperimentSearches for charginos and neutralinos are presented, based on the data samples recorded in 1999 and 2000 by the DELPHI detector at centre-of-mass energies from 192 to 209 GeV. No evidence for a signal was found. The lower chargino mass limits are 5-6 GeV/c/sup 2/ higher than those obtained at a centre-of-mass energy of 189 GeV. The ( mu , M/sub 2/) MSSM domain excluded by combining the chargino searches with neutralino searches at the Z resonance implies a limit on the mass of the lightest neutralino which, for a heavy sneutrino, is constrained to be above 37.6 GeV/c/sup 2/ for tan beta >or=1. Upper limit at 95% CL on the neutralino production cross-section times branching fraction are derived. (3 refs).oai:cds.cern.ch:5481022001
spellingShingle Particle Physics - Experiment
Alderweireld, T
Search for charginos and neutralinos with the DELPHI detector at LEP
title Search for charginos and neutralinos with the DELPHI detector at LEP
title_full Search for charginos and neutralinos with the DELPHI detector at LEP
title_fullStr Search for charginos and neutralinos with the DELPHI detector at LEP
title_full_unstemmed Search for charginos and neutralinos with the DELPHI detector at LEP
title_short Search for charginos and neutralinos with the DELPHI detector at LEP
title_sort search for charginos and neutralinos with the delphi detector at lep
topic Particle Physics - Experiment
url https://dx.doi.org/10.1142/S0217751X01008060
http://cds.cern.ch/record/548102
work_keys_str_mv AT alderweireldt searchforcharginosandneutralinoswiththedelphidetectoratlep

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