Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron Beam Single-Spin Asymmetries in the Resonance Region with Final
  Hadrons Observed   We study beam-transverse and normal single-spin asymmetry for electron-proton
inelastic scattering in the resonance region for the case where a pion is
observed in the final state. There is no beam single-spin asymmetry if the
observed particle has single-photon exchange as its only interaction, but this
is naturally circumvented when one observes a strongly interacting final state
particle. The asymmetries are not large as there is an electron mass divided by
momentum transfer suppression. We present results for the cases where the final
electron and a pion are both observed, with asymmetries of order tens of ppm,
and where only a final pion is observed, with asymmetries of order one ppm.

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The categories of this paper are: physics
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: cs
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
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The categories of this paper are: quant-ph
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The categories of this paper are: math
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The categories of this paper are: solv-int