Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hadronic Light-by-light Scattering Contribution to Muon $ g - 2 $   The hadronic light-by-light scattering contribution to muon $g-2$ is examined
based on the low energy effective theories of QCD, the Nambu-Jona-Lasinio model
and hidden local symmetry approach, supplemented by a general information
concerning the asymptotic behavior of QCD.
  Our result is $- 52 \times 10^{-11}$ with an uncertainty of $\pm 18 \times
10^{-11}$, which includes our best estimate of model dependence. This is within
the expected measurement uncertainty of $40\times 10^{-11}$ in the forthcoming
experiment at Brookhaven National Laboratory. Our result removes one of the
main theoretical obstacles in verifying the existence of the weak contribution
to the muon $g-2$.

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The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
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The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph