Double-tag events in two-photon collisions at LEP
Double-tag events in two-photon collisions are studied using the L3 detector at LEP centre-of-mass energies from √s = 189 GeV to 209 GeV. The cross sections of the e+e− → e+e−hadrons and γ ∗γ ∗ → hadrons processes are measured as a function of the product of the photon virtualities, Q2 = Q2 1Q2 2, o...
| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2002
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/76432 |
| Aporte de: |
| id |
I19-R120-10915-76432 |
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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 Double-tag events two-photon collisions LEP Física |
| spellingShingle |
Ciencias Exactas Double-tag events two-photon collisions LEP Física Dova, María Teresa L3 Collaboration Double-tag events in two-photon collisions at LEP |
| topic_facet |
Ciencias Exactas Double-tag events two-photon collisions LEP Física |
| description |
Double-tag events in two-photon collisions are studied using the L3 detector at LEP centre-of-mass energies from √s = 189 GeV to 209 GeV. The cross sections of the e+e− → e+e−hadrons and γ ∗γ ∗ → hadrons processes are measured as a function of the product of the photon virtualities, Q2 = Q2 1Q2 2, of the two-photon mass, Wγ γ , and of the variable Y = ln(W2 γ γ /Q2). The average photon virtuality is Q2 1=Q2 2 = 16 GeV2. The results are in agreement with next-to-leading order calculations for the process γ ∗γ ∗ → qq in the interval 2 ̄ Y 5. An excess is observed in the interval 5 < Y 7, corresponding to Wγ γ greater than 40 GeV. This may be interpreted as a contribution of resolved photon QCD processes or the onset of BFKL phenomena. |
| format |
Articulo Articulo |
| author |
Dova, María Teresa L3 Collaboration |
| author_facet |
Dova, María Teresa L3 Collaboration |
| author_sort |
Dova, María Teresa |
| title |
Double-tag events in two-photon collisions at LEP |
| title_short |
Double-tag events in two-photon collisions at LEP |
| title_full |
Double-tag events in two-photon collisions at LEP |
| title_fullStr |
Double-tag events in two-photon collisions at LEP |
| title_full_unstemmed |
Double-tag events in two-photon collisions at LEP |
| title_sort |
double-tag events in two-photon collisions at lep |
| publishDate |
2002 |
| url |
http://sedici.unlp.edu.ar/handle/10915/76432 |
| work_keys_str_mv |
AT dovamariateresa doubletageventsintwophotoncollisionsatlep AT l3collaboration doubletageventsintwophotoncollisionsatlep |
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Repositorios |
| _version_ |
1764820484148428800 |