Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/130858
Title: Extraction of αs from radiative Υ(1S) decays
Author: Brambilla, Nora
Garcia i Tormo, Xavier
Soto Riera, Joan
Vairo, Antonio
Keywords: Física de partícules
Cromodinàmica quàntica
Particle physics
Quantum chromodynamics
Issue Date: 18-Apr-2007
Publisher: American Physical Society
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 .
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.75.074014
It is part of: Physical Review D, 2007, vol. 75, num. 7, p. 74014
URI: http://hdl.handle.net/2445/130858
Related resource: https://doi.org/10.1103/PhysRevD.75.074014
ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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