Small-Size Instanton Corrections to the τ Hadronic Width
P. Nason, M. Porrati
Abstract
We compute the effect of small-size instanton corrections to current-current correlators, for all combinations of axial, vector, and possibly flavour non-diagonal currents. We apply our result to the hadronic decays of the τ lepton, in order to assess the reliability of the determination of from the τ hadronic width.
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