Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of a Narrow Near-Threshold Structure in the $J/\psi\phi$
  Mass Spectrum in $B^+\to J/\psi\phi K^+$ Decays   Observation is reported for a structure near the $J/\psi\phi$ threshold in
$B^+\rightarrow J/\psi\phi K^+$ decays produced in $\bar{p} p $ collisions at
$\sqrt{s}=1.96 \TeV$ with a statistical significance of beyond 5 standard
deviations.

35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th