Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-12-16
PoS Confinement8:073,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 2 Figures. 8th Conference Quark Confinement and the Hadron Spectrum, September 2008, Mainz, Germany
Scientific paper
With the help of a physically motivated ansatz, which is fitted to the data, we estimate the size of possible duality violations in hadronic tau decay. The result is that the uncertainty associated with these violations could impact the alpha_s determination from the total decay width at a level which we estimate to be \delta alpha_s(m_tau) \sim 0.003-0.010. Consequently, it cannot be neglected.
Cata Oscar
Golterman Maarten
Peris Santiago
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