Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scalar charmonium and glueball mixing in $e^+ e^-\to J/\psi X$   We study the possibility of the scalar charmonium and glueball mixing in $e^+
e^-$ annihilation at $\sqrt{s}=10.6$ GeV. The effects can be used to explain
the unexpected large cross section ($12\pm 4$ fb) and the anomalous angular
distribution ($\alpha= -1.1^{+0.8}_{-0.6}$) of the exclusive $e^+e^-\to
J/\psi\chi_{c0}$ process observed by Belle experiments at KEKB. We calculate
the helicity amplitudes for the process $e^+ e^- \to J/\psi H(0^{++})$ in
NRQCD, where $H(0^{++})$ is the mixed state. We present a detailed analysis on
the total cross section and various angular asymmetries which could be useful
to reveal the existence of the scalar glueball state.

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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
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The categories of this paper are: q-fin
3
The categories of this paper are: physics