Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence for formation of a narrow pKshort resonance with mass near 1533
  MeV in neutrino interactions   A narrow baryon resonance is observed in invariant mass of the pKshort system
formed in neutrino and antineutrino collisions with nuclei. The mass of the
resonance is estimated as (1533+-5)MeV. The observed width is less than 20 MeV,
and is compatible with being entirely due to experimental resolution. The
statistical significance of the signal is near 6.7 standard deviations. As the
position of the observed resonance does not match the mass of any known
\Sigma^{*+} state, we believe that it arises from neutrino production of the
\Theta^+ pentaquark baryon. The analysis is based on the data obtained in past
neutrino experiments with big bubble chambers: WA21, WA25, WA59, E180 and E632.

22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin