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Extraction of αs from radiative Υ(1S) decays

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dc.contributor.authorBrambilla, Nora
dc.contributor.authorGarcia i Tormo, Xavier
dc.contributor.authorSoto Riera, Joan
dc.contributor.authorVairo, Antonio
dc.date.accessioned2019-04-04T13:11:18Z
dc.date.available2019-04-04T13:11:18Z
dc.date.issued2007-04-18
dc.date.updated2019-04-04T13:11:18Z
dc.description.abstractWe improve on a recent determination of α s from Γ ( Υ ( 1 S ) → γ X ) / Γ ( Υ ( 1 S ) → X ) with CLEO data by taking into account color octet contributions and avoiding any model dependence in the extraction. We obtain α s ( M Υ ( 1 S ) ) = 0.184 + 0.015 − 0.014 , which corresponds to α s ( M Z ) = 0.119 + 0.006 − 0.005 .
dc.format.extent5 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec551130
dc.identifier.issn1550-7998
dc.identifier.urihttps://hdl.handle.net/2445/131418
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.75.074014
dc.relation.ispartofPhysical Review D, 2007, vol. 75, num. 7, p. 074014
dc.relation.urihttps://doi.org/10.1103/PhysRevD.75.074014
dc.rights(c) American Physical Society, 2007
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)
dc.subject.classificationFísica de partícules
dc.subject.classificationQuarks
dc.subject.otherParticle physics
dc.subject.otherQuarks
dc.titleExtraction of αs from radiative Υ(1S) decays
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

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