Determination of α<SUB>s</SUB> from hadronic event shapes in e+e− annihilation at 192 ⩽s⩽ 208 GeV

Results are presented from a study of the structure of high energy hadronic events recorded by the L3 detector at √s 192 GeV. The distributions of several event shape variables are compared to resummed O(α2 s ) QCD calculations. We determine the strong coupling constant at three average centre-of-ma...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2002
Materias:
Ciencias Exactas
Física
high energy hadronic events
L3 detector
QCD calculations
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/76548
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-76548
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
high energy hadronic events
L3 detector
QCD calculations
spellingShingle Ciencias Exactas
Física
high energy hadronic events
L3 detector
QCD calculations
Dova, María Teresa
L3 Collaboration
Determination of α<SUB>s</SUB> from hadronic event shapes in e+e− annihilation at 192 ⩽s⩽ 208 GeV
topic_facet Ciencias Exactas
Física
high energy hadronic events
L3 detector
QCD calculations
description Results are presented from a study of the structure of high energy hadronic events recorded by the L3 detector at √s 192 GeV. The distributions of several event shape variables are compared to resummed O(α2 s ) QCD calculations. We determine the strong coupling constant at three average centre-of-mass energies: 194.4, 200.2 and 206.2 GeV. These measurements, combined with previous L3 measurements at lower energies, demonstrate the running of αs as expected in QCD and yield αs(mZ) = 0.1227 ± 0.0012 ± 0.0058, where the first uncertainty is experimental and the second is theoretical.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Determination of α<SUB>s</SUB> from hadronic event shapes in e+e− annihilation at 192 ⩽s⩽ 208 GeV
title_short Determination of α<SUB>s</SUB> from hadronic event shapes in e+e− annihilation at 192 ⩽s⩽ 208 GeV
title_full Determination of α<SUB>s</SUB> from hadronic event shapes in e+e− annihilation at 192 ⩽s⩽ 208 GeV
title_fullStr Determination of α<SUB>s</SUB> from hadronic event shapes in e+e− annihilation at 192 ⩽s⩽ 208 GeV
title_full_unstemmed Determination of α<SUB>s</SUB> from hadronic event shapes in e+e− annihilation at 192 ⩽s⩽ 208 GeV
title_sort determination of α<sub>s</sub> from hadronic event shapes in e+e− annihilation at 192 ⩽s⩽ 208 gev
publishDate 2002
url http://sedici.unlp.edu.ar/handle/10915/76548
work_keys_str_mv AT dovamariateresa determinationofasubssubfromhadroniceventshapesineeannihilationat192s208gev
AT l3collaboration determinationofasubssubfromhadroniceventshapesineeannihilationat192s208gev
bdutipo_str Repositorios
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