Extraction of αs from radiative Υ(1S) decays
| dc.contributor.author | Brambilla, Nora | |
| dc.contributor.author | Garcia i Tormo, Xavier | |
| dc.contributor.author | Soto Riera, Joan | |
| dc.contributor.author | Vairo, Antonio | |
| dc.date.accessioned | 2019-04-04T13:11:18Z | |
| dc.date.available | 2019-04-04T13:11:18Z | |
| dc.date.issued | 2007-04-18 | |
| dc.date.updated | 2019-04-04T13:11:18Z | |
| dc.description.abstract | We 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.extent | 5 p. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.idgrec | 551130 | |
| dc.identifier.issn | 1550-7998 | |
| dc.identifier.uri | https://hdl.handle.net/2445/131418 | |
| dc.language.iso | eng | |
| dc.publisher | American Physical Society | |
| dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.75.074014 | |
| dc.relation.ispartof | Physical Review D, 2007, vol. 75, num. 7, p. 074014 | |
| dc.relation.uri | https://doi.org/10.1103/PhysRevD.75.074014 | |
| dc.rights | (c) American Physical Society, 2007 | |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | |
| dc.subject.classification | Física de partícules | |
| dc.subject.classification | Quarks | |
| dc.subject.other | Particle physics | |
| dc.subject.other | Quarks | |
| dc.title | Extraction of αs from radiative Υ(1S) decays | |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion |
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