Determination of the number of light neutrino species from single photon production at LEP
- Autores
- Dova, María Teresa; L3 Collaboration
- Año de publicación
- 1998
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A determination of the number of light neutrino families performed by measuring the cross section of single photon production in eqey collision near the Z resonance is reported. From an integrated luminosity of 100 pby1 , collected during the years 1991–94, we have observed 2091 single photon candidates with an energy above 1 GeV in the polar angular region 458-u -1358. From a maximum likelihood fit to the single photon cross section, the Z decay width into invisible particles g is measured to be G s498"12 stat Ž . Ž. "12 sys MeV. Using the Standard Model couplings of neutrinos to the Z, the inv number of light neutrino species is determined to be N s2.98"0.07 stat Ž . Ž. "0.07 sys.
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Física
light neutrino species
photon
LEP - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/74919
Ver los metadatos del registro completo
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Determination of the number of light neutrino species from single photon production at LEPDova, María TeresaL3 CollaborationCiencias ExactasFísicalight neutrino speciesphotonLEPA determination of the number of light neutrino families performed by measuring the cross section of single photon production in eqey collision near the Z resonance is reported. From an integrated luminosity of 100 pby1 , collected during the years 1991–94, we have observed 2091 single photon candidates with an energy above 1 GeV in the polar angular region 458-u -1358. From a maximum likelihood fit to the single photon cross section, the Z decay width into invisible particles g is measured to be G s498"12 stat Ž . Ž. "12 sys MeV. Using the Standard Model couplings of neutrinos to the Z, the inv number of light neutrino species is determined to be N s2.98"0.07 stat Ž . Ž. "0.07 sys.Facultad de Ciencias Exactas1998-07-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf199-208http://sedici.unlp.edu.ar/handle/10915/74919enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/S0370-2693(98)00519-Xinfo: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:UNLP2025-09-29T11:12:12Zoai:sedici.unlp.edu.ar:10915/74919Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:12:13.123SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Determination of the number of light neutrino species from single photon production at LEP |
| title |
Determination of the number of light neutrino species from single photon production at LEP |
| spellingShingle |
Determination of the number of light neutrino species from single photon production at LEP Dova, María Teresa Ciencias Exactas Física light neutrino species photon LEP |
| title_short |
Determination of the number of light neutrino species from single photon production at LEP |
| title_full |
Determination of the number of light neutrino species from single photon production at LEP |
| title_fullStr |
Determination of the number of light neutrino species from single photon production at LEP |
| title_full_unstemmed |
Determination of the number of light neutrino species from single photon production at LEP |
| title_sort |
Determination of the number of light neutrino species from single photon production at LEP |
| 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 light neutrino species photon LEP |
| topic |
Ciencias Exactas Física light neutrino species photon LEP |
| dc.description.none.fl_txt_mv |
A determination of the number of light neutrino families performed by measuring the cross section of single photon production in eqey collision near the Z resonance is reported. From an integrated luminosity of 100 pby1 , collected during the years 1991–94, we have observed 2091 single photon candidates with an energy above 1 GeV in the polar angular region 458-u -1358. From a maximum likelihood fit to the single photon cross section, the Z decay width into invisible particles g is measured to be G s498"12 stat Ž . Ž. "12 sys MeV. Using the Standard Model couplings of neutrinos to the Z, the inv number of light neutrino species is determined to be N s2.98"0.07 stat Ž . Ž. "0.07 sys. Facultad de Ciencias Exactas |
| description |
A determination of the number of light neutrino families performed by measuring the cross section of single photon production in eqey collision near the Z resonance is reported. From an integrated luminosity of 100 pby1 , collected during the years 1991–94, we have observed 2091 single photon candidates with an energy above 1 GeV in the polar angular region 458-u -1358. From a maximum likelihood fit to the single photon cross section, the Z decay width into invisible particles g is measured to be G s498"12 stat Ž . Ž. "12 sys MeV. Using the Standard Model couplings of neutrinos to the Z, the inv number of light neutrino species is determined to be N s2.98"0.07 stat Ž . Ž. "0.07 sys. |
| publishDate |
1998 |
| dc.date.none.fl_str_mv |
1998-07-09 |
| 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/10915/74919 |
| url |
http://sedici.unlp.edu.ar/handle/10915/74919 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/issn/0370-2693 info:eu-repo/semantics/altIdentifier/doi/10.1016/S0370-2693(98)00519-X |
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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) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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