Tau Decays into Four Pions

Details Tau Decays into Four Pions Tau Decays into Four Pions

1994-10-11

arxiv.org/abs/hep-ph/9410260v2

Z.Phys. C70 (1996) 247-254

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 12 figures (appended). Revised version: Minor changes in presentation and references. Fortran code included with tex

Scientific paper

We compute branching ratios and invariant mass distributions of the tau decays into four pions. The hadronic matrix elements are obtained by starting from the structure of the hadronic current in chiral limit and then implementing low-lying resonances in the different channels. Reasonable agreement with experiment is obtained both for the $\tau \to \nu_{\tau} + (4 \pi ) $ decay rates and the $e^+e^- \to (4 \pi ) $ cross sections. Furthermore we supply an interface to use our matrix elements within the Tauola Monte-Carlo program.

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