Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeV

Autores
Dova, María Teresa; L3 Collaboration
Año de publicación
1999
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Single and multi-photon events with missing energy are analysed using data collected with the L3 detector at LEP at a centre-of-mass energy of 189 GeV, for a total of 176 pb-1 of integrated luminosity. The cross section of the process e+e- → νν̄γ(γ) is measured and the number of light neutrino flavours is determined to be Nv = 3.011±0.077 including lower energy data. Upper limits on cross sections of supersymmetric processes are set and interpretations in supersymmetric models provide improved limits on the masses of the lightest neutralino and the gravitino. Graviton-photon production in low scale gravity models with extra dimensions is searched for and limits on the energy scale of the model are set exceeding 1 TeV for two extra dimensions.
Facultad de Ciencias Exactas
Materia
Ciencias Exactas
Física
Fotones
large electron positron collider
supersymmetry
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/80542
Acceder
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network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeVDova, María TeresaL3 CollaborationCiencias ExactasFísicaFotoneslarge electron positron collidersupersymmetrySingle and multi-photon events with missing energy are analysed using data collected with the L3 detector at LEP at a centre-of-mass energy of 189 GeV, for a total of 176 pb<sup>-1</sup> of integrated luminosity. The cross section of the process e+e- → <math><mtext>ν</mtext><mtext>ν</mtext><mtext>̄</mtext></math>γ(γ) is measured and the number of light neutrino flavours is determined to be N<sub>v</sub> = 3.011±0.077 including lower energy data. Upper limits on cross sections of supersymmetric processes are set and interpretations in supersymmetric models provide improved limits on the masses of the lightest neutralino and the gravitino. Graviton-photon production in low scale gravity models with extra dimensions is searched for and limits on the energy scale of the model are set exceeding 1 TeV for two extra dimensions.Facultad de Ciencias Exactas1999-12-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf268-280http://sedici.unlp.edu.ar/handle/10915/80542enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/S0370-2693(99)01286-1info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:06:44Zoai:sedici.unlp.edu.ar:10915/80542Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:06:44.675SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeV
title Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeV
spellingShingle Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeV
Dova, María Teresa
Ciencias Exactas
Física
Fotones
large electron positron collider
supersymmetry
title_short Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeV
title_full Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeV
title_fullStr Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeV
title_full_unstemmed Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeV
title_sort Single and multi-photon events with missing energy in e+e- collisions at √s = 189 GeV
dc.creator.none.fl_str_mv Dova, María Teresa
L3 Collaboration
author Dova, María Teresa
author_facet Dova, María Teresa
L3 Collaboration
author_role author
author2 L3 Collaboration
author2_role author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
Fotones
large electron positron collider
supersymmetry
topic Ciencias Exactas
Física
Fotones
large electron positron collider
supersymmetry
dc.description.none.fl_txt_mv Single and multi-photon events with missing energy are analysed using data collected with the L3 detector at LEP at a centre-of-mass energy of 189 GeV, for a total of 176 pb<sup>-1</sup> of integrated luminosity. The cross section of the process e+e- → <math><mtext>ν</mtext><mtext>ν</mtext><mtext>̄</mtext></math>γ(γ) is measured and the number of light neutrino flavours is determined to be N<sub>v</sub> = 3.011±0.077 including lower energy data. Upper limits on cross sections of supersymmetric processes are set and interpretations in supersymmetric models provide improved limits on the masses of the lightest neutralino and the gravitino. Graviton-photon production in low scale gravity models with extra dimensions is searched for and limits on the energy scale of the model are set exceeding 1 TeV for two extra dimensions.
Facultad de Ciencias Exactas
description Single and multi-photon events with missing energy are analysed using data collected with the L3 detector at LEP at a centre-of-mass energy of 189 GeV, for a total of 176 pb<sup>-1</sup> of integrated luminosity. The cross section of the process e+e- → <math><mtext>ν</mtext><mtext>ν</mtext><mtext>̄</mtext></math>γ(γ) is measured and the number of light neutrino flavours is determined to be N<sub>v</sub> = 3.011±0.077 including lower energy data. Upper limits on cross sections of supersymmetric processes are set and interpretations in supersymmetric models provide improved limits on the masses of the lightest neutralino and the gravitino. Graviton-photon production in low scale gravity models with extra dimensions is searched for and limits on the energy scale of the model are set exceeding 1 TeV for two extra dimensions.
publishDate 1999
dc.date.none.fl_str_mv 1999-12-16
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/80542
url http://sedici.unlp.edu.ar/handle/10915/80542
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0370-2693(99)01286-1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
268-280
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.22299

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