Determination of alpha_S using hadronic event shape distributions of data taken with the OPAL detector

The measurement of the strong coupling alpha_S using hadronic event shape distributions measured with the OPAL detector at center-of-mass energies between 91 and 209 GeV is summarized. For this measurement hadronic event shape distributions are compared to theoretical predictions based on next-to-ne...

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Autor principal: Schieck, Jochen
Lenguaje:eng
Publicado: 2011
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/1353506
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author Schieck, Jochen
author_facet Schieck, Jochen
author_sort Schieck, Jochen
collection CERN
description The measurement of the strong coupling alpha_S using hadronic event shape distributions measured with the OPAL detector at center-of-mass energies between 91 and 209 GeV is summarized. For this measurement hadronic event shape distributions are compared to theoretical predictions based on next-to-next-to-leading-calculations (NNLO) and NNLO combined with resummed next-to-leading-logarithm calculations (NLLA). The combined result using NNLO calculations is alpha_S(MZ)=0.1201+-0.0008(stat.)+-0.0013(exp.)+-0.0010(had.)+-0.0024(theo.) and the result using NLLO and NLLA calculations is alpha_S(MZ)=0.1189+-0.0008(stat.)+-0.0016(exp.)=-0.0010(had.)+-0.0036(theo.), with both measurements being in agreement with the world average.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
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spelling cern-13535062023-03-14T20:52:00Zhttp://cds.cern.ch/record/1353506engSchieck, JochenDetermination of alpha_S using hadronic event shape distributions of data taken with the OPAL detectorParticle Physics - ExperimentThe measurement of the strong coupling alpha_S using hadronic event shape distributions measured with the OPAL detector at center-of-mass energies between 91 and 209 GeV is summarized. For this measurement hadronic event shape distributions are compared to theoretical predictions based on next-to-next-to-leading-calculations (NNLO) and NNLO combined with resummed next-to-leading-logarithm calculations (NLLA). The combined result using NNLO calculations is alpha_S(MZ)=0.1201+-0.0008(stat.)+-0.0013(exp.)+-0.0010(had.)+-0.0024(theo.) and the result using NLLO and NLLA calculations is alpha_S(MZ)=0.1189+-0.0008(stat.)+-0.0016(exp.)=-0.0010(had.)+-0.0036(theo.), with both measurements being in agreement with the world average.The measurement of the strong coupling alpha_S using hadronic event shape distributions measured with the OPAL detector at center-of-mass energies between 91 and 209 GeV is summarized. For this measurement hadronic event shape distributions are compared to theoretical predictions based on next-to-next-to-leading-calculations (NNLO) and NNLO combined with resummed next-to-leading-logarithm calculations (NLLA). The combined result using NNLO calculations is $\alpha_S$ $(M_{Z^0})$=0.1201 ± 0.0008(stat.)± 0.0013(exp.) ± 0.0010(had.) ± 0.0024(theo.) and the result using NLLO and NLLA calculations is alpha_S(MZ)=0.1189 ± 0.0008(stat.)± 0.0016(exp.) ± 0.0010(had.) ± 0.0036(theo.), with both measurements being in agreement with the world average.arXiv:1105.4873oai:cds.cern.ch:13535062011-05-25
spellingShingle Particle Physics - Experiment
Schieck, Jochen
Determination of alpha_S using hadronic event shape distributions of data taken with the OPAL detector
title Determination of alpha_S using hadronic event shape distributions of data taken with the OPAL detector
title_full Determination of alpha_S using hadronic event shape distributions of data taken with the OPAL detector
title_fullStr Determination of alpha_S using hadronic event shape distributions of data taken with the OPAL detector
title_full_unstemmed Determination of alpha_S using hadronic event shape distributions of data taken with the OPAL detector
title_short Determination of alpha_S using hadronic event shape distributions of data taken with the OPAL detector
title_sort determination of alpha_s using hadronic event shape distributions of data taken with the opal detector
topic Particle Physics - Experiment
url http://cds.cern.ch/record/1353506
work_keys_str_mv AT schieckjochen determinationofalphasusinghadroniceventshapedistributionsofdatatakenwiththeopaldetector

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