Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass spectra measurement in the reaction (p,2p) at protons energy 500
  MeV on nuclei C,Al,Cu and Pb   Mass spectra of the reaction (p,2p) at the beam energy 500 MeV on nuclei
C,Al,Cu and Pb were measured on two-armed nonmagnetic scintillation
spectrometer (candlepower - 0.2 sr, mass allowance - 4 MeV), which is lokated
on the TRIUMF cyclotron (Canada). Observable anomalies in these spectra can be
stipulated by forming of two-nucleon resonance states.

14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci