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V-A hadronic tau decays: a QCD laboratory
Recent ALEPH/OPAL data on the V-A spectral functions from hadronic tau decays are used for fixing the QCD continuum threshold at which the first and second Weinberg sum rules should be satisfied in the chiral limit, and for predicting the values of the low-energy constants f_\pi,~m_{\pi^+}-m_{\pi^0}...
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| Lenguaje: | eng |
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2001
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| Acceso en línea: | https://dx.doi.org/10.1016/S0920-5632(01)01154-9 http://cds.cern.ch/record/479308 |