Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determination of the number of $J/\psi$ events with inclusive $J/\psi$
  decays   A measurement of the number of $J/\psi$ events collected with the BESIII
detector in 2009 and 2012 is performed using inclusive decays of the $J/\psi$ .
The number of $J/\psi$ events taken in 2009 is recalculated to be
$(223.7\pm1.4)\times 10^6$, which is in good agreement with the previous
measurement, but with significantly improved precision due to improvements in
the BESIII software. The number of $J/\psi$ events taken in 2012 is determined
to be $(1086.9\pm 6.0)\times 10^6$. In total, the number of $J/\psi$ events
collected with the BESIII detector is measured to be $(1310.6\pm 7.0)\times
10^6$, where the uncertainty is dominated by systematic effects and the
statistical uncertainty is negligible.

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The categories of this paper are: cond-mat
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The categories of this paper are: eess
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph