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arXiv · hep-ph/9310270

Pseudoscalar Mass Effects in Decays of Taus with Three Pseudoscalar Mesons

Roger Decker·Markus Finkemeier·Erwin Mirkes
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Abstract

We study the effects of non-vanishing pseudoscalar masses in $τ$ decays into three mesons. The hadronic matrix elements are obtained by using the generalized structure of the chiral currents with nonvanishing pseudoscalar masses and implementing the low-lying resonances in the different channels. We demonstrate that suitable angular distributions are sensitive to the mass effects in the chiral Langrangian. Numerical results for the rele\-% vant structure functions are given for the decay modes $τ\rightarrow νπ^-π^-π^+$, $νK^-π^-π^+$ and $νK^-π^-K^+$.

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Roger Decker, Markus Finkemeier, Erwin Mirkes. 1993-10-12. Pseudoscalar Mass Effects in Decays of Taus with Three Pseudoscalar Mesons. https://doi.org/10.1103/physrevd.50.6863

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