Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of Nucleon Resonances with Double Polarization Observables of Pion
  Photoproduction   The role of the nucleon resonances in the double polarization observables of
pion photoproduction is investigated by using the resonance parameters
predicted by Capstick and Roberts. As an example, we show that the
not-well-determined two-star resonance N$^{-}_{3/2}$(1960) can be examined by
performing experiments on beam-recoil polarization at large angles.

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The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
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The categories of this paper are: hep-th
10
The categories of this paper are: q-bio