CERN Accelerating science

Article
Report number arXiv:1508.07612 ; DESY-15-149 ; DESY REPORT 15-149
Title Transverse-target-spin asymmetry in exclusive $\omega$-meson electroproduction
Related titleTransverse-target-spin asymmetry in exclusive $\omega$-meson electroproduction
Author(s)

Airapetian, A. (Giessen U. ; Michigan U.) ; Akopov, N. (Yerevan Phys. Inst.) ; Akopov, Z. (DESY) ; Aschenauer, E.C. (Brookhaven) ; Augustyniak, W. (Warsaw, Inst. Nucl. Studies) ; Avetissian, A. (Yerevan Phys. Inst.) ; Belostotski, S. (St. Petersburg, INP) ; Blok, H.P. (NIKHEF, Amsterdam ; Vrije U., Amsterdam) ; Borissov, A. (Pusan Natl. U.) ; Bryzgalov, V. (Serpukhov, IHEP) ; Capitani, G.P. (Frascati) ; Ciullo, G. (Ferrara U. ; INFN, Ferrara) ; Contalbrigo, M. (Ferrara U. ; INFN, Ferrara) ; Dalpiaz, P.F. (INFN, Ferrara) ; Deconinck, W. (DESY) ; De Leo, R. (INFN, Bari) ; De Sanctis, E. (Frascati) ; Diefenthaler, M. (Erlangen - Nuremberg U. ; Illinois U., Urbana) ; Di Nezza, P. (Frascati) ; Düren, M. (Giessen U.) ; Elbakian, G. (Yerevan Phys. Inst.) ; Ellinghaus, F. (Wuppertal U.) ; Felawka, L. (Zurich, ETH) ; Frullani, S. (INFN, Rome ; Rome, ISS) ; Gabbert, D. (DESY, Zeuthen) ; Gapienko, G. (Serpukhov, IHEP) ; Gapienko, V. (Serpukhov, IHEP) ; Gharibyan, V. (Yerevan Phys. Inst.) ; Giordano, F. (INFN, Catania) ; Gliske, S. (Argonne) ; Hasch, D. (Frascati) ; Hoek, M. (Mainz U., Inst. Kernphys.) ; Holler, Y. (DESY) ; Ivanilov, A. (Serpukhov, IHEP) ; Jackson, H.E. (Argonne) ; Joosten, S. (Illinois U., Urbana) ; Kaiser, R. (Glasgow U.) ; Karyan, G. (Yerevan Phys. Inst.) ; Keri, T. (Giessen U.) ; Kinney, E. (Colorado U.) ; Kisselev, A. (St. Petersburg, INP) ; Korotkov, V. (Serpukhov, IHEP) ; Kozlov, V. (KIT, Karlsruhe, IKP) ; Krivokhijine, V.G. (Dubna, JINR) ; Lagamba, L. (INFN, Bari) ; Lapikás, L. (NIKHEF, Amsterdam) ; Lehmann, I. (Glasgow U.) ; Lenisa, P. (INFN, Ferrara) ; Lorenzon, W. (Michigan U.) ; Ma, B.Q. (Peking U.) ; Manaenkov, S.I. (St. Petersburg, INP) ; Mao, Y. (Vanderbilt U.) ; Marianski, B. (NCBJ, Swierk) ; Marukyan, H. (Yerevan Phys. Inst.) ; Miyachi, Y. (Yamagata U.) ; Movsisyan, A. (Yerevan Phys. Inst.) ; Muccifora, V. (Frascati) ; Naryshkin, Y. (St. Petersburg, INP) ; Nass, A. (Erlangen - Nuremberg U.) ; Negodaev, M. (DESY, Zeuthen) ; Nowak, W.D. (DESY, Zeuthen) ; Pappalardo, L.L. (Ferrara U. ; INFN, Ferrara) ; Perez-Benito, R. (Giessen U.) ; Petrosyan, A. (Dubna, JINR) ; Reimer, P.E. (Argonne) ; Reolon, A.R. (Frascati) ; Riedl, C. (DESY) ; Rith, K. (Erlangen - Nuremberg U.) ; Rosner, G. (Glasgow U.) ; Rostomyan, A. (DESY) ; Rubin, J. (Illinois U., Urbana) ; Ryckbosch, D. (Gent U.) ; Salomatin, Y. (Serpukhov, IHEP) ; Schnell, G. (Basque U., Bilbao ; IKERBASQUE, Bilbao) ; Seitz, B. (Glasgow U.) ; Shibata, T.A. (Tokyo Inst. Tech.) ; Statera, M. (Ferrara U. ; INFN, Ferrara) ; Steffens, E. (CERN ; Munich, Max Planck Inst.) ; Steijger, J.J.M. (NIKHEF, Amsterdam) ; Stinzing, F. (Erlangen - Nuremberg U.) ; Taroian, S. (Yerevan Phys. Inst.) ; Terkulov, A. (Lebedev Inst.) ; Truty, R. (Illinois U., Urbana) ; Trzcinski, A. (NCBJ, Swierk) ; Tytgat, M. (Gent U.) ; Van Haarlem, Y. (Gent U.) ; Van Hulse, C. (Basque U., Bilbao ; Gent U.) ; Vikhrov, V. (St. Petersburg, INP) ; Vilardi, I. (INFN, Bari) ; Vogel, C. (Erlangen - Nuremberg U.) ; Wang, S. (Peking U.) ; Yaschenko, S. (DESY) ; Yen, S. (TRIUMF) ; Zihlmann, B. (DESY) ; Zupranski, P. (NCBJ, Swierk)

Publication 2015-12-17
Imprint 30 Aug 2015
Number of pages 9
Note DESY Report 15-149
In: Eur. Phys. J. C 75 (2015) 600
DOI 10.1140/epjc/s10052-015-3825-7
Subject category Particle Physics - Experiment
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.
Copyright/License arXiv nonexclusive-distrib. 1.0
publication: © 2015-2025 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³



Corresponding record in: Inspire


 レコード 生成: 2015-09-02, 最終変更: 2024-05-04


Article from SCOAP3:
Download fulltextPDF
Springer Open Access article:
Download fulltextPDF
フルテキスト:
Download fulltextPDF
External link:
Download fulltextPreprint