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Tau decays into four pions

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Zeitschrift für Physik C Particles and Fields

Abstract

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 the chiral limit and then implementing low-lying resonances in the different channels. Reasonable agreement with experiment is obtained both for the τ → vτ+(4π) decay rates and the e+ e− → (4π) cross sections. Furthermore we supply an interface to use our matrix elements within the Tauola Monte-Carlo program.

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Authors and Affiliations

  1. Institut für Theoretische Teilchenphysik, Universitä t Karlsruhe, D-76128, Karlsruhe, Germany

    R. Decker, P. Heiliger & H. H. Jonsson

  2. INFN, Laboratori Nazionali di Frascati, P.O. Box 13, I-00044, Frascati (Roma), Italy

    M. Finkemeier

Authors
  1. R. Decker
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  2. P. Heiliger
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  3. H. H. Jonsson
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  4. M. Finkemeier
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Decker, R., Heiliger, P., Jonsson, H.H. et al. Tau decays into four pions. Z Phys C - Particles and Fields 70, 247–254 (1996). https://doi.org/10.1007/s002880050102

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  • DOI: https://doi.org/10.1007/s002880050102

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