Muon-pair and tau-pair production in two-photon collisions at LEP
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 a...
Guardado en:
| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2004
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/79918 |
| Aporte de: |
| id |
I19-R120-10915-79918 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Física Fotones L3 detector large electron positron collider |
| spellingShingle |
Ciencias Exactas Física Fotones L3 detector large electron positron collider Dova, María Teresa L3 Collaboration Muon-pair and tau-pair production in two-photon collisions at LEP |
| topic_facet |
Ciencias Exactas Física Fotones L3 detector large electron positron collider |
| 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. |
| format |
Articulo Articulo |
| author |
Dova, María Teresa L3 Collaboration |
| author_facet |
Dova, María Teresa L3 Collaboration |
| author_sort |
Dova, María Teresa |
| title |
Muon-pair and tau-pair production in two-photon collisions at LEP |
| 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 |
| publishDate |
2004 |
| url |
http://sedici.unlp.edu.ar/handle/10915/79918 |
| work_keys_str_mv |
AT dovamariateresa muonpairandtaupairproductionintwophotoncollisionsatlep AT l3collaboration muonpairandtaupairproductionintwophotoncollisionsatlep |
| bdutipo_str |
Repositorios |
| _version_ |
1764820487329808385 |