Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → ℓ+ℓ−γγ
- Autores
- Dova, MarÃa Teresa; L3 Collaboration
- Año de publicación
- 1995
- Idioma
- inglés
- Tipo de recurso
- artÃculo
- Estado
- versión publicada
- Descripción
- Total and differential cross sections for the process e+e− → γγ(γ), and the total cross section for the process e+e− → γγγ, are measured at energies around 91 GeV using the data collected with the L3 detector from 1991 to 1993. We set lower limits, at 95% CL, on a contact interaction energy scale parameter Λ > 602 GeV, on the mass of an excited electron and on the QED cut-off parameters Λ+ > 149 GeV and Λ_ > 143 GeV. Upper limits are also set o branching fractions of Z decaying into γγ, π° and ηγ of 5.2 × 10−5, 5.2 × 10−5 and 7.6 × 10−5 respectively. The reactions e+e− → ℓ+ℓ−nγ (ℓ = e, μ, τ) are studied using the data collected from 1990 to 1994. The data are consistent with the QED expectations.
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
e+e− → γγ(γ)
91 GeV
lower limits
FÃsica - 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:10915/73374
Ver los metadatos del registro completo
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Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → â„“+ℓ−γγDova, MarÃa TeresaL3 CollaborationCiencias Exactase+e− → γγ(γ)91 GeVlower limitsFÃsicaTotal and differential cross sections for the process e+e− → γγ(γ), and the total cross section for the process e+e− → γγγ, are measured at energies around 91 GeV using the data collected with the L3 detector from 1991 to 1993. We set lower limits, at 95% CL, on a contact interaction energy scale parameter Λ > 602 GeV, on the mass of an excited electron and on the QED cut-off parameters Λ+ > 149 GeV and Λ_ > 143 GeV. Upper limits are also set o branching fractions of Z decaying into γγ, π° and ηγ of 5.2 × 10−5, 5.2 × 10−5 and 7.6 × 10−5 respectively. The reactions e+e− → â„“+ℓ−nγ (â„“ = e, μ, Ï„) are studied using the data collected from 1990 to 1994. The data are consistent with the QED expectations.Facultad de Ciencias Exactas1995-06-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf136-144http://sedici.unlp.edu.ar/handle/10915/73374enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(95)00527-Rinfo: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:UNLP2025-09-29T11:12:09Zoai:sedici.unlp.edu.ar:10915/73374Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:12:09.349SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → ℓ+ℓ−γγ |
| title |
Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → ℓ+ℓ−γγ |
| spellingShingle |
Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → â„“+ℓ−γγ Dova, MarÃa Teresa Ciencias Exactas e+e− → γγ(γ) 91 GeV lower limits FÃsica |
| title_short |
Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → ℓ+ℓ−γγ |
| title_full |
Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → ℓ+ℓ−γγ |
| title_fullStr |
Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → ℓ+ℓ−γγ |
| title_full_unstemmed |
Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → ℓ+ℓ−γγ |
| title_sort |
Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → ℓ+ℓ−γγ |
| dc.creator.none.fl_str_mv |
Dova, MarÃa Teresa L3 Collaboration |
| author |
Dova, MarÃa Teresa |
| author_facet |
Dova, MarÃa Teresa L3 Collaboration |
| author_role |
author |
| author2 |
L3 Collaboration |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas e+e− → γγ(γ) 91 GeV lower limits FÃsica |
| topic |
Ciencias Exactas e+e− → γγ(γ) 91 GeV lower limits FÃsica |
| dc.description.none.fl_txt_mv |
Total and differential cross sections for the process e+e− → γγ(γ), and the total cross section for the process e+e− → γγγ, are measured at energies around 91 GeV using the data collected with the L3 detector from 1991 to 1993. We set lower limits, at 95% CL, on a contact interaction energy scale parameter Λ > 602 GeV, on the mass of an excited electron and on the QED cut-off parameters Λ+ > 149 GeV and Λ_ > 143 GeV. Upper limits are also set o branching fractions of Z decaying into γγ, π° and ηγ of 5.2 × 10−5, 5.2 × 10−5 and 7.6 × 10−5 respectively. The reactions e+e− → ℓ+ℓ−nγ (ℓ = e, μ, τ) are studied using the data collected from 1990 to 1994. The data are consistent with the QED expectations. Facultad de Ciencias Exactas |
| description |
Total and differential cross sections for the process e+e− → γγ(γ), and the total cross section for the process e+e− → γγγ, are measured at energies around 91 GeV using the data collected with the L3 detector from 1991 to 1993. We set lower limits, at 95% CL, on a contact interaction energy scale parameter Λ > 602 GeV, on the mass of an excited electron and on the QED cut-off parameters Λ+ > 149 GeV and Λ_ > 143 GeV. Upper limits are also set o branching fractions of Z decaying into γγ, π° and ηγ of 5.2 × 10−5, 5.2 × 10−5 and 7.6 × 10−5 respectively. The reactions e+e− → ℓ+ℓ−nγ (ℓ = e, μ, τ) are studied using the data collected from 1990 to 1994. The data are consistent with the QED expectations. |
| publishDate |
1995 |
| dc.date.none.fl_str_mv |
1995-06-22 |
| 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/10915/73374 |
| url |
http://sedici.unlp.edu.ar/handle/10915/73374 |
| 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/10.1016/0370-2693(95)00527-R |
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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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application/pdf 136-144 |
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