Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of the decay $\psip\rar\kstark$   Using 14 million $\psi(2S)$ events collected with the BESII detector,
branching fractions of $\psip\rar\kstarkpm$ and $\kstarknn$ are determined to
be: $\calB(\psip\rar\kstarkpm)=(2.9^{+1.3}_{-1.7}\pm0.4)\times 10^{-5}$ and
$\calB(\psip\rar\kstarknn)=(13.3^{+2.4}_{-2.7}\pm1.9)\times 10^{-5}$. The
results confirm the violation of the "12%" rule for these two decay channels
with higher precision. A large isospin violation between the charged and
neutral modes is observed.

35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat