QCD Description of Hadronic Tau Decays

Details QCD Description of Hadronic Tau Decays QCD Description of Hadronic Tau Decays

2011-01-11

arxiv.org/abs/1101.2107v1

Nucl.Phys.Proc.Suppl.218:89-97,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 1 figure. Invited talk at the 11th International Workshop on Tau Lepton Physics (Manchester, September 2010)

Scientific paper

10.1016/j.nuclphysbps.2011.06.01

The QCD analysis of hadronic tau decays is reviewed and a summary of the present phenomenological status is presented. The following topics are discussed: the determination of alpha_s(m_tau) = 0.338 +- 0.012 from the inclusive tau hadronic width, the measurement of |V_us| through the Cabibbo-suppressed decays of the tau, and the extraction of chiral-perturbation-theory couplings from the spectral tau data.

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