Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implications of $\tau$ Decays into Strange Scalar and Axial Vector
  Mesons   Recent reports of the observation of the decay $\tau \rarrow \nu_{\tau} + K +
\pi + \pi$ raise interesting questions. The $u-s$ quark mass difference can
induce an effective second-class current in the strange sector and enhance
decays to helicity-suppressed scalar states. This suggests searches for scalar
strange mesons in the $\tau \rarrow \nu_{\tau} + K + \eta' $ and $\tau \rarrow
\nu_{\tau} + K + \pi$ decay modes. $\tau$ decays to axial vector final states
may clarify strange meson spectroscopy by analogy with the clarification of the
$a_1$ problem in the nonstrange sector. Open questions include mixing effects
in the strange axial vector mesons and the implications of models based on QCD
for hadronization and final state interactions following the creation of a $q
\bar q$ pair by a weak vertex,

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The categories of this paper are: math
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn