Extraction of alpha_s from radiative Upsilon(1S) decays

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dc.creatorBrambilla, Nora
dc.creatorTormo, Xavier Garcia i
dc.creatorSoto, Joan
dc.creatorVairo, Antonio
dc.date2007-02-07
dc.date2007-03-29
dc.date.accessioned2026-07-07T11:59:02Z
dc.date.available2026-07-07T11:59:02Z
dc.descriptionWe improve on a recent determination of alpha_s from Gamma(Upsilon(1S)-->X gamma)/Gamma(Upsilon(1S)-->X) with CLEO data by taking into account color octet contributions and avoiding any model dependence in the extraction. We obtain alpha_s(M_Upsilon(1S))= 0.184+0.015-0.014, which corresponds to alpha_s(M_Z)=0.119+0.006-0.005.
dc.description11 pages. v2: One reference added. v3: Minor modification in an error estimate. Journal version
dc.identifierhttps://arxiv.org/abs/hep-ph/0702079
dc.identifierhttp://arxiv.org/abs/hep-ph/0702079
dc.identifierPhys.Rev.D75:074014,2007
dc.identifierdoi:10.1103/PhysRevD.75.074014
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206426
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Lattice
dc.titleExtraction of alpha_s from radiative Upsilon(1S) decays
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