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

被引：0
|
作者：
A. Airapetian
N. Akopov
E. C. Aschenauer
W. Augustyniak
R. Avakian
A. Avetissian
E. Avetisyan
H. P. Blok
H. Böttcher
A. Borissov
J. Bowles
I. Brodski
V. Bryzgalov
J. Burns
G. P. Capitani
E. Cisbani
G. Ciullo
M. Contalbrigo
P. F. Dalpiaz
W. Deconinck
R. De Leo
E. De Sanctis
M. Diefenthaler
P. Di Nezza
M. Düren
M. Ehrenfried
G. Elbakian
F. Ellinghaus
E. Etzelmüller
R. Fabbri
S. Frullani
G. Gapienko
V. Gapienko
J. Garay García
F. Garibaldi
G. Gavrilov
V. Gharibyan
F. Giordano
S. Gliske
M. Hartig
D. Hasch
Y. Holler
I. Hristova
A. Ivanilov
H. E. Jackson
S. Joosten
R. Kaiser
G. Karyan
T. Keri
E. Kinney
机构：
[1] Physics Division,School of Physics
[2] Argonne National Laboratory,Department of Theoretical Physics
[3] Istituto Nazionale di Fisica Nucleare,Nuclear Physics Laboratory
[4] Sezione di Bari,Physikalisches Institut
[5] Peking University,Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara and Dipartimento di Fisica e Scienze della Terra
[6] University of the Basque Country UPV/EHU,Department of Physics and Astronomy
[7] IKERBASQUE,II. Physikalisches Institut
[8] Basque Foundation for Science,SUPA, School of Physics and Astronomy
[9] University of Colorado,Department of Physics
[10] DESY,Randall Laboratory of Physics
[11] DESY,Institut für Theoretische Physik
[12] Joint Institute for Nuclear Research,Department of Physics
[13] Universität Erlangen-Nürnberg,Department of Physics and Astronomy
[14] Università di Ferrara,undefined
[15] Istituto Nazionale di Fisica Nucleare,undefined
[16] Laboratori Nazionali di Frascati,undefined
[17] Ghent University,undefined
[18] Justus-Liebig Universität Gießen,undefined
[19] University of Glasgow,undefined
[20] University of Illinois,undefined
[21] University of Michigan,undefined
[22] Lebedev Physical Institute,undefined
[23] National Institute for Subatomic Physics (Nikhef),undefined
[24] B.P. Konstantinov Petersburg Nuclear Physics Institute,undefined
[25] Institute for High Energy Physics,undefined
[26] Universität Regensburg,undefined
[27] Istituto Nazionale di Fisica Nucleare,undefined
[28] Sezione di Roma,undefined
[29] Gruppo Collegato Sanità and Istituto Superiore di Sanità,undefined
[30] TRIUMF,undefined
[31] Tokyo Institute of Technology,undefined
[32] VU University,undefined
[33] National Centre for Nuclear Research,undefined
[34] Yerevan Physics Institute,undefined
[35] DESY - HERMES,undefined
来源：
Journal of High Energy Physics | / 2014卷
关键词：
Lepton-Nucleon Scattering; QCD; Polarization; Photon production;
D O I：
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学科分类号：
摘要：
The beam-helicity asymmetry in associated electroproduction of real photons, ep → eγπN , 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 → eγπ0p and ep → eγπ+n, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero.
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    Friedrich, J.
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    Kohl, M.
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    Makek, M.
    Marroncle, J.
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    Merle, P.
    Mueller, U.
    Nungesser, L.
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    M. Ding
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    J. Friedrich
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    H. Merkel
    P. Merle
    U. Müller
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    J. Pochodzalla
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    Achenbach, P.
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    Angelini, G.
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    Atac, H.
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    Barion, L.
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    Benmouna, N.
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    Carlin, C.
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    Carvajal, J. C.
    Chatagnon, P.
    Chesnokov, V.
    Chetry, T.
    Ciullo, G.
    Clash, G.
    Cole, P. L.
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    Becerra, O. Cortes
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