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Transverse-target-spin asymmetry in exclusive ω-meson electroproduction

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Organization
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HERMES
Abstract
Hard exclusive electroproduction of omega mesons is studied with the HERMES spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off a transversely polarized hydrogen target. The amplitudes of five azimuthal modulations of the single-spin asymmetry of the cross section with respect to the transverse proton polarization are measured. They are determined in the entire kinematic region as well as for two bins in photon virtuality and momentum transfer to the nucleon. Also, a separation of asymmetry amplitudes into longitudinal and transverse components is done. These results are compared to a phenomenological model that includes the pion pole contribution. Within this model, the data favor a positive pi omega transition form factor.
Keywords
PARTON DISTRIBUTIONS, LEPTON SCATTERING, ENERGY, LEPTOPRODUCTION, QCD

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Citation

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MLA
Airapetian, A et al. “Transverse-target-spin Asymmetry in Exclusive Ω-meson Electroproduction.” EUROPEAN PHYSICAL JOURNAL C 75.12 (2015): n. pag. Print.
APA
Airapetian, A., Akopov, N., Akopov, Z., Aschenauer, E., Augustyniak, W., Avetissian, A., Belostotski, S., et al. (2015). Transverse-target-spin asymmetry in exclusive ω-meson electroproduction. EUROPEAN PHYSICAL JOURNAL C, 75(12).
Chicago author-date
Airapetian, A, N Akopov, Z Akopov, EC Aschenauer, W Augustyniak, A Avetissian, S Belostotski, et al. 2015. “Transverse-target-spin Asymmetry in Exclusive Ω-meson Electroproduction.” European Physical Journal C 75 (12).
Chicago author-date (all authors)
Airapetian, A, N Akopov, Z Akopov, EC Aschenauer, W Augustyniak, A Avetissian, S Belostotski, HP Blok, A Borissov, V Bryzgalov, GP Capitani, G Ciullo, M Contalbrigo, PF Dalpiaz, W Deconinck, R De Leo, E De Sanctis, M Diefenthaler, P Di Nezza, M Duren, G Elbakian, F Ellinghaus, L Felawka, S Frullani, D Gabbert, G Gapienko, V Gapienko, V Gharibyan, F Giordano, S Gliske, D Hasch, M Hoek, Y Holler, A Ivanilov, HE Jackson, S Joosten, R Kaiser, G Karyan, T Keri, E Kinney, A Kisselev, V Korotkov, V Kozlov, VG Krivokhijine, L Lagamba, L Lapikas, I Lehmann, P Lenisa, W Lorenzon, BQ Ma, SI Manaenkov, Y Mao, B Marianski, H Marukyan, Y Miyachi, A Movsisyan, V Muccifora, 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, G Schnell, B Seitz, TA Shibata, M Statera, E Steffens, JJM Steijger, F Stinzing, S Taroian, A Terkulov, R Truty, A Trzcinski, Michael Tytgat, Y Van Haarlem, C Van Hulse, V Vikhrov, I Vilardi, C Vogel, S Wang, S Yaschenko, S Yen, B Zihlmann, and P Zupranski. 2015. “Transverse-target-spin Asymmetry in Exclusive Ω-meson Electroproduction.” European Physical Journal C 75 (12).
Vancouver
1.
Airapetian A, Akopov N, Akopov Z, Aschenauer E, Augustyniak W, Avetissian A, et al. Transverse-target-spin asymmetry in exclusive ω-meson electroproduction. EUROPEAN PHYSICAL JOURNAL C. 2015;75(12).
IEEE
[1]
A. Airapetian et al., “Transverse-target-spin asymmetry in exclusive ω-meson electroproduction,” EUROPEAN PHYSICAL JOURNAL C, vol. 75, no. 12, 2015.
@article{7121844,
  abstract     = {Hard exclusive electroproduction of omega mesons is studied with the HERMES spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off a transversely polarized hydrogen target. The amplitudes of five azimuthal modulations of the single-spin asymmetry of the cross section with respect to the transverse proton polarization are measured. They are determined in the entire kinematic region as well as for two bins in photon virtuality and momentum transfer to the nucleon. Also, a separation of asymmetry amplitudes into longitudinal and transverse components is done. These results are compared to a phenomenological model that includes the pion pole contribution. Within this model, the data favor a positive pi omega transition form factor.},
  articleno    = {600},
  author       = {Airapetian, A and Akopov, N and Akopov, Z and Aschenauer, EC and Augustyniak, W and Avetissian, A and Belostotski, S and Blok, HP and Borissov, A and Bryzgalov, V and Capitani, GP 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 Elbakian, G and Ellinghaus, F and Felawka, L and Frullani, S and Gabbert, D and Gapienko, G and Gapienko, V and Gharibyan, V and Giordano, F and Gliske, S and Hasch, D and Hoek, M and Holler, Y 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 Krivokhijine, VG and Lagamba, L and Lapikas, L and Lehmann, I and Lenisa, P and Lorenzon, W and Ma, BQ and Manaenkov, SI and Mao, Y and Marianski, B and Marukyan, H and Miyachi, Y and Movsisyan, A and Muccifora, V 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 Schnell, G and Seitz, B and Shibata, TA and Statera, M and Steffens, E and Steijger, JJM 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, C and Vikhrov, V and Vilardi, I and Vogel, C and Wang, S and Yaschenko, S and Yen, S and Zihlmann, B and Zupranski, P},
  issn         = {1434-6044},
  journal      = {EUROPEAN PHYSICAL JOURNAL C},
  keywords     = {PARTON DISTRIBUTIONS,LEPTON SCATTERING,ENERGY,LEPTOPRODUCTION,QCD},
  language     = {eng},
  number       = {12},
  pages        = {8},
  title        = {Transverse-target-spin asymmetry in exclusive ω-meson electroproduction},
  url          = {http://dx.doi.org/10.1140/epjc/s10052-015-3825-7},
  volume       = {75},
  year         = {2015},
}

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