The beam-helicity asymmetry in associated electroproduction of real photons, ep → e γπ N , in the Δ(1232)-resonance region is measured using the longitudinally polarized Hera positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extracted separately for two channels, ep → e γπ 0 p and ep → e γπ + n , from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.
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"title": "Beam-helicity asymmetry in associated electroproduction of real photons ep \u2009\u2192\u2009 e\u03b3\u03c0N in the \u0394-resonance region"
}
],
"dois": [
{
"value": "10.1007/JHEP01(2014)077"
}
],
"publication_info": [
{
"page_start": "077",
"material": "article",
"journal_title": "Journal of High Energy Physics",
"year": 2014
}
],
"$schema": "http://repo.scoap3.org/schemas/hep.json",
"acquisition_source": {
"date": "2014-01-17T00:00:00",
"source": "Springer/SISSA",
"method": "scoap3",
"submission_number": "2716e8224c7c11e8b67702163e01809a"
},
"page_nr": [
17
],
"license": [
{
"url": "http://creativecommons.org/licenses/by/4.0/",
"license": "CC-BY-4.0"
}
],
"copyright": [
{
"statement": "The Author(s)"
}
],
"control_number": "972",
"record_creation_date": "2014-01-17T00:00:00",
"_files": [
{
"checksum": "md5:871334cfbfd7c6cb9b23688166ee421e",
"filetype": "xml",
"bucket": "74cdc5dd-d010-4d26-8836-f0d6049d6a1e",
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"arxiv_eprints": [
{
"categories": [
"hep-ex",
"nucl-ex"
],
"value": "1310.5081"
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],
"abstracts": [
{
"source": "Springer/SISSA",
"value": "The beam-helicity asymmetry in associated electroproduction of real photons, ep \u2009\u2192\u2009 e \u03b3\u03c0 N , in the \u0394(1232)-resonance region is measured using the longitudinally polarized Hera positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extracted separately for two channels, ep \u2009\u2192\u2009 e \u03b3\u03c0 0 p and ep \u2009\u2192\u2009 e \u03b3\u03c0 + n , from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero."
}
],
"imprints": [
{
"date": "2014-01-16",
"publisher": "Springer/SISSA"
}
]
}