Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for Narrow Nucleon Resonances below Pion Threshold in the
  H(e,e'pi^+)X and D(e,e'p)X Reactions   In two series of high-resolution coincidence experiments at the
three-spectrometer facility at MAMI, the H(e,e'pi^+)X and D(e,e'p)X reactions
were studied to search for narrow nucleon resonances below pion threshold. The
missing-mass resolution was 0.6 to 1.6 MeV/c^2 (FWHM) in the proton experiment
and 0.9 to 1.3 MeV/c^2 in the deuteron experiment. The experiments covered the
missing-mass region from the neutron mass up to about 1050 and 1100 MeV/c^2,
respectively. None of our measurements showed a signal for narrow resonances to
a level of down to 10^-4 with respect to the neutron peak in the missing-mass
spectra.

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The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
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The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int