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Particles and Fields


Eur. Phys. J. C 22, 283-287 (2001)
DOI: 10.1007/s100520100802

$\tau\rightarrow\omega3\pi\nu$ decays

J. Gao and B.A. Li

Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506, USA

(Received: 30 July 2001 / Published online: 21 November 2001 - © Springer-Verlag / Società Italiana di Fisica 2001 )

Abstract
A theoretical study of the anomalous decay mode $\tau\rightarrow\omega\pi\pi\pi\nu$ is presented. The theoretical value of the branching ratio of $\tau^-\rightarrow\omega\pi^-\pi^0\pi^0\nu$ agrees well with the data. The branching ratio of $\tau^{-}\rightarrow\omega\pi^+\pi^-\pi^-\nu_\tau$ is predicted. It is found that the vertices of $a_{1}\rho\pi$ and $\omega\rho\pi$ play a dominant role in these two decay modes. CVC is satisfied, and there is no adjustable parameter.



© Società Italiana di Fisica, Springer-Verlag 2001