Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New Charmonium-Like States at Babar and Belle   BaBar and Belle have recently revived the interest in charmonium
spectroscopy, discovering many unexpected resonances. In this review, I'll
focus mostly on the states found in B decays and double $\ccbar$. A better
understanding of their production mechanism can help to discriminate among
models, confirm tentative $J^{PC}$ assignments, and clarify the overall
picture.

12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin