QCD studies and determination of a<sub>s</sub> in e+e - collisions at √s= 161 GeV and 172 GeV

We present a study of the structure of hadronic events recorded by the L3 detector at LEP at the center of mass energies of 161 and 172 GeV. The data sample corresponds to an integrated luminosity of 21.25 pb<sup>−1</sup> collected during the high energy runs of 1996. The distributions o...

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Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 1997
Materias:
Ciencias Exactas
Física
quantum chromodynamics
la̵rge hadron collider
Partículas Elementales
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/80449
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-80449
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
quantum chromodynamics
la̵rge hadron collider
Partículas Elementales
spellingShingle Ciencias Exactas
Física
quantum chromodynamics
la̵rge hadron collider
Partículas Elementales
Dova, María Teresa
L3 Collaboration
QCD studies and determination of a<sub>s</sub> in e+e - collisions at √s= 161 GeV and 172 GeV
topic_facet Ciencias Exactas
Física
quantum chromodynamics
la̵rge hadron collider
Partículas Elementales
description We present a study of the structure of hadronic events recorded by the L3 detector at LEP at the center of mass energies of 161 and 172 GeV. The data sample corresponds to an integrated luminosity of 21.25 pb<sup>−1</sup> collected during the high energy runs of 1996. The distributions of event shape variables and the energy dependence of their mean values are well reproduced by QCD models. From a comparison of the data with resummed <math><mrow is="true"><mi mathvariant="script" is="true">O</mi><mo stretchy="false" is="true">(</mo><msubsup is="true"><mi is="true">α</mi><mo lspace="0.1em" is="true">s</mo><mo is="true">2</mo></msubsup><mo stretchy="false" is="true">)</mo></mrow></math> QCD calculations, we determine the strong coupling constant at the two energies. Combining this with our earlier measurements we find that the strong coupling constant decreases with increasing energy as expected in QCD.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title QCD studies and determination of a<sub>s</sub> in e+e - collisions at √s= 161 GeV and 172 GeV
title_short QCD studies and determination of a<sub>s</sub> in e+e - collisions at √s= 161 GeV and 172 GeV
title_full QCD studies and determination of a<sub>s</sub> in e+e - collisions at √s= 161 GeV and 172 GeV
title_fullStr QCD studies and determination of a<sub>s</sub> in e+e - collisions at √s= 161 GeV and 172 GeV
title_full_unstemmed QCD studies and determination of a<sub>s</sub> in e+e - collisions at √s= 161 GeV and 172 GeV
title_sort qcd studies and determination of a<sub>s</sub> in e+e - collisions at √s= 161 gev and 172 gev
publishDate 1997
url http://sedici.unlp.edu.ar/handle/10915/80449
work_keys_str_mv AT dovamariateresa qcdstudiesanddeterminationofasubssubineecollisionsats161gevand172gev
AT l3collaboration qcdstudiesanddeterminationofasubssubineecollisionsats161gevand172gev
bdutipo_str Repositorios
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