Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The gluonic B and J/psi decays into the eta' meson   The inclusive and exclusive B decays into the eta' meson plus others are
investigated in a model based on the QCD anomaly. The invariant mass
distribution is discussed. The constraint of the effective coupling is obtained
from the data of the exclusive decay modes. The branching ratio of J/psi ->
eta'eta gamma is predicted to be as large as 5.4*10^{-5}, which can be tested
in the forthcoming CLEO-c experiments.

12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an