Target and beam-target spin asymmetries in exclusive pion electroproduction for Q2>1 GeV2. I. ep→eπ+n
- Bosted, Pe
- Amaryan, Mj
- Anefalos Pereira, S
- Avakian, H
- Badui, Ra
- Ball, J
- Baltzell, Na
- Battaglieri, M
- Batourine, V
- Bedlinskiy, I
- Biselli, As
- Briscoe, Wj
- Bultmann, S
- Burkert, Vd
- Carman, Ds
- Celentano, A
- Chandavar, S
- Charles, G
- Ciullo, G
- Clark, L
- Cole, Pl
- Contalbrigo, M
- Crede, V
- De Vita, R
- Deur, A
- De Sanctis, E
- Djalali, C
- Dupre, R
- Egiyan, H
- El Alaoui, A
- El Fassi, L
- Elouadrhiri, L
- Eugenio, P
- Fanchini, E
- Fedotov, G
- Filippi, A
- Fleming, Ja
- Forest, T
- Fradi, A
- Gevorgyan, N
- Ghandilyan, Y
- Gilfoyle, Gp
- Girod, Fx
- Gleason, C
- Gohn, W
- Golovatch, E
- Gothe, Rw
- Griffioen, Ka
- Guidal, M
- Hakobyan, H
- Hattawy, M
- Hicks, K
- Holtrop, M
- Hughes, Sm
- Ilieva, Y
- Ireland, Dg
- Ishkhanov, Bs
- Isupov, El
- Jiang, H
- Jo, Hs
- Joo, K
- Joosten, S
- Khachatryan, G
- Khandaker, M
- Kim, A
- Kim, W
- Klein, Fj
- Koirala, S
- Kubarovsky, V
- Kuhn, Se
- Lanza, L
- Net, La
- Lenisa, P
- Livingston, K
- Macgregor, Ijd
- Mccracken, Me
- Mckinnon, B
- Meyer, Ca
- Mirazita, M
- Mokeev, Vi
- Montgomery, Ra
- Munevar, E
- Munoz Camacho, C
- Murdoch, G
- Nadel Turonski, P
- Niccolai, S
- Osipenko, M
- Ostrovidov, Ai
- Park, K
- Pasyuk, E
- Peng, P
- Phelps, W
- Pisano, S
- Pogorelko, O
- Price, Jw
- Prok, Y
- Protopopescu, D
- Puckett, Ajr
- Raue, Ba
- Ripani, M
- Rosner, G
- Rossi, P
- Schumacher, Ra
- Seder, E
- Skorodumina, I
- Smith, Gd
- Sokhan, D
- Sparveris, N
- Stankovic, I
- Stepanyan, S
- Strakovsky, Ii
- Strauch, S
- Taiuti, M
- Tian, Y
- Torayev, B
- Ungaro, M
- Voskanyan, H
- Voutier, E
- Walford, Nk
- Wei, X
- Weinstein, Lb
- Zachariou, N
- Zhang, J
- Zhao, Zw
- COLANERI, LUCA
- D'ANGELO, ANNALISA
- ZONTA, IRENE
DOIAbstract
Beam-target double-spin asymmetries and target single-spin asymmetries were measured for the exclusive pi(+) electroproduction reaction. gamma(*) p -> n pi(+). The results were obtained from scattering of 6-GeV longitudinally polarized electrons off longitudinally polarized protons using the CEBAF Large Acceptance Spectrometer at Jefferson Laboratory. The kinematic range covered is 1.1 < W < 3 GeV and 1 < Q(2) < 6 GeV2. Results were obtained for about 6000 bins in W, Q(2), cos(theta(*)), and phi(*). Except at forward angles, very large target-spin asymmetries are observed over the entire W region. Reasonable agreement is found with phenomenological fits to previous data for W < 1.6 GeV, but very large differences are seen at higher values o...
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