Observation of multiple hard photon final states at √s = 130- 140 GeV at LEP
- Autores
- Dova, María Teresa; The L3 Collaboration
- Año de publicación
- 1996
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We have studied the process e+e− → nγ (n ≥ 2) at an average center-of-mass energy of 133 GeV using the L3 detector at LEP. For an integrated luminosity of 4.95 pb⁻¹, we find one γγγγ(γ) final state with only hard photons. The rates of both γγγ and γγ events are consistent with QED expectations. The cross section of the reaction e+e− → γγ(γ) in the polar range 16° < θγ < 164° is measured to be 22.6 ± 2.2 pb. Decays into photons of narrow scalar resonances with masses between 90 and 130 GeV are not observed. The observation of the event with four energetic photons is consistent with QED although the kinematic configuration of the photons is atypical.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Instituto de Física La Plata - Materia
-
Física
Electron-positron collisions
QED photon production
Multi-photon final states - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-nd/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/196015
Ver los metadatos del registro completo
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Observation of multiple hard photon final states at √s = 130- 140 GeV at LEPDova, María TeresaThe L3 CollaborationFísicaElectron-positron collisionsQED photon productionMulti-photon final statesWe have studied the process e+e− → nγ (n ≥ 2) at an average center-of-mass energy of 133 GeV using the L3 detector at LEP. For an integrated luminosity of 4.95 pb⁻¹, we find one γγγγ(γ) final state with only hard photons. The rates of both γγγ and γγ events are consistent with QED expectations. The cross section of the reaction e+e− → γγ(γ) in the polar range 16° < θγ < 164° is measured to be 22.6 ± 2.2 pb. Decays into photons of narrow scalar resonances with masses between 90 and 130 GeV are not observed. The observation of the event with four energetic photons is consistent with QED although the kinematic configuration of the photons is atypical.La lista completa de autores que integran el documento puede consultarse en el archivo.Instituto de Física La Plata1996-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf323-332http://sedici.unlp.edu.ar/handle/10915/196015enginfo:eu-repo/semantics/altIdentifier/issn/1873-2445info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(96)00612-0info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-06-23T11:17:16Zoai:sedici.unlp.edu.ar:10915/196015Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-06-23 11:17:16.386SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Observation of multiple hard photon final states at √s = 130- 140 GeV at LEP |
| title |
Observation of multiple hard photon final states at √s = 130- 140 GeV at LEP |
| spellingShingle |
Observation of multiple hard photon final states at √s = 130- 140 GeV at LEP Dova, María Teresa Física Electron-positron collisions QED photon production Multi-photon final states |
| title_short |
Observation of multiple hard photon final states at √s = 130- 140 GeV at LEP |
| title_full |
Observation of multiple hard photon final states at √s = 130- 140 GeV at LEP |
| title_fullStr |
Observation of multiple hard photon final states at √s = 130- 140 GeV at LEP |
| title_full_unstemmed |
Observation of multiple hard photon final states at √s = 130- 140 GeV at LEP |
| title_sort |
Observation of multiple hard photon final states at √s = 130- 140 GeV at LEP |
| dc.creator.none.fl_str_mv |
Dova, María Teresa The L3 Collaboration |
| author |
Dova, María Teresa |
| author_facet |
Dova, María Teresa The L3 Collaboration |
| author_role |
author |
| author2 |
The L3 Collaboration |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Física Electron-positron collisions QED photon production Multi-photon final states |
| topic |
Física Electron-positron collisions QED photon production Multi-photon final states |
| dc.description.none.fl_txt_mv |
We have studied the process e+e− → nγ (n ≥ 2) at an average center-of-mass energy of 133 GeV using the L3 detector at LEP. For an integrated luminosity of 4.95 pb⁻¹, we find one γγγγ(γ) final state with only hard photons. The rates of both γγγ and γγ events are consistent with QED expectations. The cross section of the reaction e+e− → γγ(γ) in the polar range 16° < θγ < 164° is measured to be 22.6 ± 2.2 pb. Decays into photons of narrow scalar resonances with masses between 90 and 130 GeV are not observed. The observation of the event with four energetic photons is consistent with QED although the kinematic configuration of the photons is atypical. La lista completa de autores que integran el documento puede consultarse en el archivo. Instituto de Física La Plata |
| description |
We have studied the process e+e− → nγ (n ≥ 2) at an average center-of-mass energy of 133 GeV using the L3 detector at LEP. For an integrated luminosity of 4.95 pb⁻¹, we find one γγγγ(γ) final state with only hard photons. The rates of both γγγ and γγ events are consistent with QED expectations. The cross section of the reaction e+e− → γγ(γ) in the polar range 16° < θγ < 164° is measured to be 22.6 ± 2.2 pb. Decays into photons of narrow scalar resonances with masses between 90 and 130 GeV are not observed. The observation of the event with four energetic photons is consistent with QED although the kinematic configuration of the photons is atypical. |
| publishDate |
1996 |
| dc.date.none.fl_str_mv |
1996-09 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/196015 |
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eng |
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eng |
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