Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on the narrow charmonium state of Belle at 3871.8 MeV as a
  deuson   It is pointed out that the narrow charmonium state at 3871.8 MeV reported by
the Belle collaboration is likely to be a $D\bar D^*$ deuteronlike meson-meson
state called a deuson. It was predicted near the $D\bar D^*$ threshold over 10
years ago. Its spin-parity would be 0-+ or 1++ and an important decay mode
should be via $D^0\bar D^{*0}$ to $D^0\bar D^0\pi^0$. Its width to that channel
should then be of the order 50 keV. Note: A more detailed update of this
unpublished note is in hep-ph/0402237.

3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom