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This PhD thesis studies some hadronic and radiative decays of the tau lepton using a Chiral Lagrangian including resonance fields. After a theoretical introduction, the decays to the $(\pi \pi \pi)^-$, $(KK\pi)^-$ and $\eta^{(\prime)} \pi^- \pi^0$ hadronic states and $\tau \to (\pi-K)^- \gamma u tau$ are analysed. Some material, which was not included in the corresponding references, is also discussed: The structure functions analysis for the 3 pion modes, the differential decay width as a function of the two-particle invariant masses in the considered three-meson modes and a simplified study of the $\tau\to$\eta^{(\prime)} \pi^- \pi^0 u tau$processes within a single-angle mixing scheme for the$\eta$and$\eta^\prime\$ mesons.

Autor: Pablo Roig

Fuente: https://archive.org/