Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The scalar mesons in multi-channel $\pi\pi$ scattering and decays of the
  $\psi$ and $\Upsilon$ families   The $f_0$ mesons are studied in a combined analysis of data on the isoscalar
S-wave processes $\pi\pi\to\pi\pi,K\overline{K},\eta\eta$ and on decays
$J/\psi\to\phi(\pi\pi, K\overline{K})$, $\psi(2S)\to J/\psi(\pi\pi)$, and
$\Upsilon(2S)\to\Upsilon(1S)\pi\pi$ from the Argus, Crystal Ball, CLEO, CUSB,
DM2, Mark II, Mark III, and BES II collaborations. The method of analysis,
based on analyticity and unitarity and using an uniformization procedure, is
set forth with some details. Some spectroscopic implications from results of
the analysis are discussed.

8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th