Muon-pair and tau-pair production in two-photon collisions at LEP
- Autores
- Dova, María Teresa; L3 Collaboration
- Año de publicación
- 2004
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The QED processes e+e− → e+e−μ+μ− and e+e− → e+e−τ+τ− are studied with the L3 detector at LEP using an untagged data sample collected at centre-of-mass energies 161 GeV ≤ √s 209 GeV. The τ -pairs are observed through the associated decay of one τ into eνν and the other into ππν. The cross sections are measured as a function of √s. For muon pairs, the cross section of the γ γ → μ+μ− process is also measured as a function of the two-photon centre-of-mass energy for 3 GeV ≤ Wγγ 40 GeV. Good agreement is found between these measurements and the O(α4) QED expectations. In addition, limits on the anomalous magnetic and electric dipole moments of the τ lepton are extracted.
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Física
Fotones
L3 detector
large electron positron collider - 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:10915/79918
Ver los metadatos del registro completo
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Muon-pair and tau-pair production in two-photon collisions at LEPDova, María TeresaL3 CollaborationCiencias ExactasFísicaFotonesL3 detectorlarge electron positron colliderThe QED processes e+e− → e+e−μ+μ− and e+e− → e+e−τ+τ− are studied with the L3 detector at LEP using an untagged data sample collected at centre-of-mass energies 161 GeV ≤ √s 209 GeV. The τ -pairs are observed through the associated decay of one τ into eνν and the other into ππν. The cross sections are measured as a function of √s. For muon pairs, the cross section of the γ γ → μ+μ− process is also measured as a function of the two-photon centre-of-mass energy for 3 GeV ≤ W<sub>γγ</sub> 40 GeV. Good agreement is found between these measurements and the O(α<sup>4</sup>) QED expectations. In addition, limits on the anomalous magnetic and electric dipole moments of the τ lepton are extracted.Facultad de Ciencias Exactas2004-04-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf53-62http://sedici.unlp.edu.ar/handle/10915/79918enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2004.02.012info: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:UNLP2025-10-15T11:04:14Zoai:sedici.unlp.edu.ar:10915/79918Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:04:14.919SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Muon-pair and tau-pair production in two-photon collisions at LEP |
| title |
Muon-pair and tau-pair production in two-photon collisions at LEP |
| spellingShingle |
Muon-pair and tau-pair production in two-photon collisions at LEP Dova, María Teresa Ciencias Exactas Física Fotones L3 detector large electron positron collider |
| title_short |
Muon-pair and tau-pair production in two-photon collisions at LEP |
| title_full |
Muon-pair and tau-pair production in two-photon collisions at LEP |
| title_fullStr |
Muon-pair and tau-pair production in two-photon collisions at LEP |
| title_full_unstemmed |
Muon-pair and tau-pair production in two-photon collisions at LEP |
| title_sort |
Muon-pair and tau-pair production in two-photon collisions 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 Fotones L3 detector large electron positron collider |
| topic |
Ciencias Exactas Física Fotones L3 detector large electron positron collider |
| dc.description.none.fl_txt_mv |
The QED processes e+e− → e+e−μ+μ− and e+e− → e+e−τ+τ− are studied with the L3 detector at LEP using an untagged data sample collected at centre-of-mass energies 161 GeV ≤ √s 209 GeV. The τ -pairs are observed through the associated decay of one τ into eνν and the other into ππν. The cross sections are measured as a function of √s. For muon pairs, the cross section of the γ γ → μ+μ− process is also measured as a function of the two-photon centre-of-mass energy for 3 GeV ≤ W<sub>γγ</sub> 40 GeV. Good agreement is found between these measurements and the O(α<sup>4</sup>) QED expectations. In addition, limits on the anomalous magnetic and electric dipole moments of the τ lepton are extracted. Facultad de Ciencias Exactas |
| description |
The QED processes e+e− → e+e−μ+μ− and e+e− → e+e−τ+τ− are studied with the L3 detector at LEP using an untagged data sample collected at centre-of-mass energies 161 GeV ≤ √s 209 GeV. The τ -pairs are observed through the associated decay of one τ into eνν and the other into ππν. The cross sections are measured as a function of √s. For muon pairs, the cross section of the γ γ → μ+μ− process is also measured as a function of the two-photon centre-of-mass energy for 3 GeV ≤ W<sub>γγ</sub> 40 GeV. Good agreement is found between these measurements and the O(α<sup>4</sup>) QED expectations. In addition, limits on the anomalous magnetic and electric dipole moments of the τ lepton are extracted. |
| publishDate |
2004 |
| dc.date.none.fl_str_mv |
2004-04-08 |
| 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 |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/79918 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/0370-2693 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2004.02.012 |
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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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