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http://hdl.handle.net/2445/131418| 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 Quarks Particle physics Quarks |
| 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. 074014 |
| URI: | http://hdl.handle.net/2445/131418 |
| Related resource: | https://doi.org/10.1103/PhysRevD.75.074014 |
| ISSN: | 1550-7998 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 551130.pdf | 111.89 kB | Adobe PDF | View/Open |
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