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Duality violations in hadronic tau decays and the value of alpha_s

By Diogo Boito, Oscar Cata, Maarten Golterman, Matthias Jamin, Kim Maltman, James Osborne and Santiago Peris


We discuss the quantitative impact of duality violations on the determination of the strong coupling constant from hadronic tau decays, based on a preliminary analysis of OPAL data.Comment: 2 pages, contribution to Workshop on Precision Measurements of alpha_S, Feb. 9-11, 2011, Munich, German

Topics: High Energy Physics - Phenomenology, High Energy Physics - Experiment, High Energy Physics - Lattice
Year: 2011
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