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Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region

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Abstract
The beam-helicity asymmetry in associated electroproduction of real photons, ep -> aEuro parts per thousand e gamma pi N , in the Delta(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 -> aEuro parts per thousand e gamma pi(0) p and ep -> aEuro parts per thousand e gamma pi(+) n, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.
Keywords
QCD, Lepton-Nucleon Scattering, Polarization, Photon production, VIRTUAL COMPTON-SCATTERING, CROSS-SECTIONS, SPIN, HERA, DEPENDENCE, LIMIT

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MLA
Airapetian, A., et al. “Beam-Helicity Asymmetry in Associated Electroproduction of Real Photons Ep → EγπN in the Δ-Resonance Region.” JOURNAL OF HIGH ENERGY PHYSICS, no. 1, 2014, doi:10.1007/JHEP01(2014)077.
APA
Airapetian, A., Akopov, N., Aschenauer, E., Augustyniak, W., Avakian, R., Avetissian, A., … Zupranski, P. (2014). Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region. JOURNAL OF HIGH ENERGY PHYSICS, (1). https://doi.org/10.1007/JHEP01(2014)077
Chicago author-date
Airapetian, A, N Akopov, EC Aschenauer, W Augustyniak, R Avakian, A Avetissian, E Avetisyan, et al. 2014. “Beam-Helicity Asymmetry in Associated Electroproduction of Real Photons Ep → EγπN in the Δ-Resonance Region.” JOURNAL OF HIGH ENERGY PHYSICS, no. 1. https://doi.org/10.1007/JHEP01(2014)077.
Chicago author-date (all authors)
Airapetian, A, N Akopov, EC Aschenauer, W Augustyniak, R Avakian, A Avetissian, E Avetisyan, HP Blok, H Bottcher, A Borissov, J Bowles, I Brodski, V Bryzgalov, J Burns, GP Capitani, E Cisbani, G Ciullo, M Contalbrigo, PF Dalpiaz, W Deconinck, R De Leo, E De Sanctis, M Diefenthaler, P Di Nezza, M Duren, M Ehrenfried, G Elbakian, F Ellinghaus, E Etzelmuller, R Fabbri, S Frullani, G Gapienko, V Gapienko, JG Garcia, F Garibaldi, G Gavrilov, V Gharibyan, F Giordano, S Gliske, M Hartig, D Hasch, Y Holler, I Hristova, A Ivanilov, HE Jackson, S Joosten, R Kaiser, G Karyan, T Keri, E Kinney, A Kisselev, V Korotkov, V Kozlov, P Kravchenko, VG Krivokhijine, L Lagamba, L Lapikas, I Lehmann, P Lenisa, W Lorenzon, XG Lu, BQ Ma, D Mahon, NCR Makins, SI Manaenkov, Y Mao, B Marianski, H Marukyan, CA Miller, Y Miyachi, A Movsisyan, V Muccifora, M Murray, A Mussgiller, Y Naryshkin, A Nass, M Negodaev, WD Nowak, LL Pappalardo, R Perez-Benito, A Petrosyan, PE Reimer, AR Reolon, C Riedl, K Rith, G Rosner, A Rostomyan, J Rubin, Dirk Ryckbosch, Y Salomatin, A Schafer, G Schnell, B Seitz, TA Shibata, M Stahl, M Statera, E Steffens, JJM Steijger, J Stewart, F Stinzing, S Taroian, A Terkulov, R Truty, A Trzcinski, Michael Tytgat, Y Van Haarlem, Charlotte Van Hulse, V Vikhrov, I Vilardi, S Wang, S Yaschenko, Z Ye, S Yen, V Zagrebelnyy, B Zihlmann, and P Zupranski. 2014. “Beam-Helicity Asymmetry in Associated Electroproduction of Real Photons Ep → EγπN in the Δ-Resonance Region.” JOURNAL OF HIGH ENERGY PHYSICS (1). doi:10.1007/JHEP01(2014)077.
Vancouver
1.
Airapetian A, Akopov N, Aschenauer E, Augustyniak W, Avakian R, Avetissian A, et al. Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region. JOURNAL OF HIGH ENERGY PHYSICS. 2014;(1).
IEEE
[1]
A. Airapetian et al., “Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region,” JOURNAL OF HIGH ENERGY PHYSICS, no. 1, 2014.
@article{4434601,
  abstract     = {{The beam-helicity asymmetry in associated electroproduction of real photons, ep -> aEuro parts per thousand e gamma pi N , in the Delta(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 -> aEuro parts per thousand e gamma pi(0) p and ep -> aEuro parts per thousand e gamma pi(+) n, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.}},
  author       = {{Airapetian, A and Akopov, N and Aschenauer, EC and Augustyniak, W and Avakian, R and Avetissian, A and Avetisyan, E and Blok, HP and Bottcher, H and Borissov, A and Bowles, J and Brodski, I and Bryzgalov, V and Burns, J and Capitani, GP and Cisbani, E and Ciullo, G and Contalbrigo, M and Dalpiaz, PF and Deconinck, W and De Leo, R and De Sanctis, E and Diefenthaler, M and Di Nezza, P and Duren, M and Ehrenfried, M and Elbakian, G and Ellinghaus, F and Etzelmuller, E and Fabbri, R and Frullani, S and Gapienko, G and Gapienko, V and Garcia, JG and Garibaldi, F and Gavrilov, G and Gharibyan, V and Giordano, F and Gliske, S and Hartig, M and Hasch, D and Holler, Y and Hristova, I and Ivanilov, A and Jackson, HE and Joosten, S and Kaiser, R and Karyan, G and Keri, T and Kinney, E and Kisselev, A and Korotkov, V and Kozlov, V and Kravchenko, P and Krivokhijine, VG and Lagamba, L and Lapikas, L and Lehmann, I and Lenisa, P and Lorenzon, W and Lu, XG and Ma, BQ and Mahon, D and Makins, NCR and Manaenkov, SI and Mao, Y and Marianski, B and Marukyan, H and Miller, CA and Miyachi, Y and Movsisyan, A and Muccifora, V and Murray, M and Mussgiller, A and Naryshkin, Y and Nass, A and Negodaev, M and Nowak, WD and Pappalardo, LL and Perez-Benito, R and Petrosyan, A and Reimer, PE and Reolon, AR and Riedl, C and Rith, K and Rosner, G and Rostomyan, A and Rubin, J and Ryckbosch, Dirk and Salomatin, Y and Schafer, A and Schnell, G and Seitz, B and Shibata, TA and Stahl, M and Statera, M and Steffens, E and Steijger, JJM and Stewart, J and Stinzing, F and Taroian, S and Terkulov, A and Truty, R and Trzcinski, A and Tytgat, Michael and Van Haarlem, Y and Van Hulse, Charlotte and Vikhrov, V and Vilardi, I and Wang, S and Yaschenko, S and Ye, Z and Yen, S and Zagrebelnyy, V and Zihlmann, B and Zupranski, P}},
  issn         = {{1029-8479}},
  journal      = {{JOURNAL OF HIGH ENERGY PHYSICS}},
  keywords     = {{QCD,Lepton-Nucleon Scattering,Polarization,Photon production,VIRTUAL COMPTON-SCATTERING,CROSS-SECTIONS,SPIN,HERA,DEPENDENCE,LIMIT}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{17}},
  title        = {{Beam-helicity asymmetry in associated electroproduction of real photons ep → eγπN in the Δ-resonance region}},
  url          = {{http://doi.org/10.1007/JHEP01(2014)077}},
  year         = {{2014}},
}

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