Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of tau decays involving kaons, spectral functions and
  determination of the strange quark mass   All ALEPH measurements of branching ratios of tau decays involving kaons are
summarized including a combination of results obtained with K^0_S and K^0_L
detection. The decay dynamics are studied, leading to the determination of
contributions from vector K^*(892) and K^{*}(1410), and axial-vector K_1(1270)
and K_1(1400) resonances. Agreement with isospin symmetry is observed among the
different final states. Under the hypothesis of the conserved vector current,
the spectral function for the K\bar{K}\pi mode is compared with the
corresponding cross section for low energy e^+e^- annihilation, yielding an
axial-vector fraction of (94^{+6}_{-8})% for this mode. The branching ratio for
tau decay into all strange final states is determined to be B(\tau^-\to
X^-(S=-1)\nu_\tau)=(28.7\pm1.2)\times 10^{-3}. The measured mass spectra of the
strange tau decay modes are exploited to derive the S=-1 spectral function. A
combination of strange and nonstrange spectral functions is used to determine
the strange quark mass and nonperturbative contributions to the strange
hadronic width. A method is developed to avoid the bad convergence of the spin
zero hadronic component, with the result m_s(M_\tau^2)=(176^{+46}_{-57})
MeV/c^2. The evolution down to 1 GeV gives m_s(1 {GeV}^2) = (234^{+61}_{-76})
MeV/c^2.

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The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin