2-6 November 2015
Playa Mazatlán Beach Hotel
Mexico/BajaSur timezone
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Contribution

Bugambilias

$\tau^{-} \to \pi^{-}\pi^{0}l^{+}l^{-} \nu_\tau$ decays as possible background of Lepton Flavor/Number Violating tau decays

Speakers

  • Jorge Luis GUTIÉRREZ

Primary authors

Description

We present the branching ratio of the $\tau^{-} \to \pi^{-}\pi^{0}\l^{+}\l^{-}\nu_{\tau}$ decays, with $l=\mu,e$. In this work only the total Inner Bremmstralung contribution to the amplitude is considered. The Form Factor in the hadronic vertex is parametrized from a fit to tau -> pi pi nu_tau data from the Belle experiment including three resonances ($\rho(770)$, $\rho(1450)$ and $\rho(1700)$). Special attention is devoted to the stability of the phase space integration.