Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pseudoscalar Mass Effects in Decays of Taus with Three Pseudoscalar
  Mesons   We study the effects of non-vanishing pseudoscalar masses in $\tau$ 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 $\tau\rightarrow
\nu\pi^-\pi^-\pi^+$, $\nu K^-\pi^-\pi^+$ and $\nu K^-\pi^-K^+$.

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The categories of this paper are: hep-lat
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The categories of this paper are: ao-sci
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int