Resonance Chiral Lagrangians and alternative approaches to hadronic tau decays

Abstract

Exclusive semi-leptonic decays of the tau lepton offer a clean probe to study the hadronization of QCD currents in its non-perturbative regime and learn about resonance dynamics, which drives strong interactions in these processes. In this theory outlook, I will use the simplest non-trivial di-pion tau decays to illustrate briefly recent theoretical progress on these analyses and their comparison to data.

4 pages, 1 figure, talk given at the 13th International Workshop on Tau Lepton Physics Aachen, Germany, 15-19 September, 2014. To appear in Nucl. Phys. Proc. Suppl

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