Hadronic decays of the tau lepton into K K pion modes within Resonance Chiral Theory

Details Hadronic decays of the tau lepton into K K pion modes within Resonance Chiral Theory Hadronic decays of the tau lepton into K K pion modes within Resonance Chiral Theory

2007-09-24

arxiv.org/abs/0709.3734v1

AIPConf.Proc.964:40-46,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 1 figure, Prepared for the conference QCD@Work07 in Martina Franca, Bari, Italy. To appear in the Proceedings

Scientific paper

10.1063/1.2823878

Tau decays into hadrons have a twofold interest: On the one hand, they are a clean environment for studying the hadronization of the left-handed current of QCD, while, on the other side, provide relevant dynamical information of the resonances that mediate these processes. Within an effective field theory-like framework, namely Resonance Chiral Theory, we analyse the decays ot the tau into K K pion modes and compare the results with CLEO and BaBar data. In this way, we provide bounds on the couplings entering our Lagrangian and predict the corresponding spectral functions. As a main result -and contrary to the bulk of theoretical studies and experimental analyses- we find vector current dominance on these decays.

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