Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Review and interpretation of the new heavy states discovered at the
  $B$-factories   I discuss some recent discoveries in the spectroscopy of the charmonium-like
resonances, and some of their theoretical interpretations are reviewed.

22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
2
The categories of this paper are: math
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess