Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible effects of color screening and large string tension in heavy
  quarkonium spectrum   Possible effects of the color screened confinement potential are
investigated. Color screened linear potential with a large string tension
$T=(0.26-0.32)GeV^2$ is suggested by a study of the $c\bar c$ and $b\bar b$
spectra. The $\psi (4160)$ and $\psi (4415)$ are respectively assigned as the
$\psi (4S)$-dominated and the $\psi (5S)$ $c\bar c$ states. Satisfactory
results for the masses and leptonic widths (with QCD radiative corrections) of
$c\bar c$ and $b\bar b$ states are obtained.

22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ