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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131418
Extraction of αs from radiative Υ(1S) decays
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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 .
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BRAMBILLA, Nora, et al. Extraction of αs from radiative Υ(1S) decays. Physical Review D. 2007. Vol. 75, num. 7, pags. 074014. ISSN 1550-7998. [consulted: 7 of June of 2026]. Available at: https://hdl.handle.net/2445/131418