Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass spectrum of 1-+ exotic mesons from lattice QCD   Time correlation functions of a hybrid exotic meson operator, with JPC=1-+,
generated in quenched lattice QCD are subjected to a (Bayesian) maximum entropy
analysis. Five distinct spectral levels are uncovered. Their extrapolation into
the physical pion mass region suggests a possible relationship to
experimentally known states pi1(1400) and pi1(1600), and also to a state in the
2 GeV region carrying the same quantum numbers.

23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ