Measurement of Target and Double-spin Asymmetries for the $\vec e\vec p\to eπ^+ (n)$ Reaction in the Nucleon Resonance Region at Low $Q^2$
Creators: name: Zheng, X.
name: Adhikari, K. P.
name: Bosted, P.
name: Deur, A.
name: Drozdov, V.
name: Fassi, L. El
name: Kang, Hyekoo
name: Kovacs, K.
name: Kuhn, S.
name: Long, E.
name: Phillips, S. K.
name: Ripani, M.
name: Slifer, K.
name: Smith, L. C.
name: Adikaram, D.
name: Akbar, Z.
name: Amaryan, M. J.
name: Pereira, S. Anefalos
name: Asryan, G.
name: Avakian, H.
name: Badui, R. A.
name: Ball, J.
name: Baltzell, N. A.
name: Battaglieri, M.
name: Batourine, V.
name: Bedlinskiy, I.
name: Biselli, A. S.
name: Briscoe, W. J.
name: Bültmann, S.
name: Burkert, V. D.
name: Carman, D. S.
name: Celentano, A.
name: Chandavar, S.
name: Charles, G.
name: Chen, J. -P.
name: Chetry, T.
name: Choi, Seonho
name: Ciullo, G.
name: Clark, L.
name: Colaneri, L.
name: Cole, P. L.
name: Compton, N.
name: Contalbrigo, M.
name: Crede, V.
name: D'Angelo, A.
name: Dashyan, N.
name: De Vita, R.
name: De Sanctis, E.
name: Djalali, C.
name: Dodge, G. E.
name: Dupre, R.
name: Egiyan, H.
name: Alaoui, A. El
name: Elouadrhiri, L.
name: Eugenio, P.
name: Fanchini, E.
name: Fedotov, G.
name: Fersch, R.
name: Filippi, A.
name: Fleming, J. A.
name: Gevorgyan, N.
name: Ghandilyan, Y.
name: Gilfoyle, G. P.
name: Giovanetti, K. L.
name: Girod, F. X.
name: Gleason, C.
name: Golovach, E.
name: Gothe, R. W.
name: Griffioen, K. A.
name: Guidal, M.
name: Guler, N.
name: Guo, L.
name: Hanretty, C.
name: Harrison, N.
name: Hattawy, M.
name: Hicks, K.
name: Holtrop, M.
name: Hughes, S. M.
name: Ilieva, Y.
name: Ireland, D. G.
name: Ishkhanov, B. S.
name: Isupov, E. L.
name: Jenkins, D.
name: Jiang, H.
name: Jo, H. S.
name: Joosten, S.
name: Keller, D.
name: Khachatryan, G.
name: Khandaker, M.
name: Kim, A.
name: Kim, W.
name: Klein, F. J.
name: Kubarovsky, V.
name: Lanza, L.
name: Lenisa, P.
name: Livingston, K.
name: MacGregor, I . J . D.
name: Markov, N.
name: McKinnon, B.
name: Mirazita, M.
name: Mokeev, V.
name: Movsisyan, A.
name: Munevar, E.
name: Camacho, C. Munoz
name: Murdoch, G.
name: Nadel-Turonski, P.
name: Net, L. A.
name: Ni, A.
name: Niccolai, S.
name: Niculescu, G.
name: Niculescu, I.
name: Osipenko, M.
name: Ostrovidov, A. I.
name: Paolone, M.
name: Paremuzyan, R.
name: Park, K.
name: Pasyuk, E.
name: Peng, P.
name: Pisano, S.
name: Pogorelko, O.
name: Price, J. W.
name: Puckett, A. J. R.
name: Raue, B. A.
name: Rizzo, A.
name: Rosner, G.
name: Rossi, P.
name: Roy, P.
name: Sabatié, F.
name: Salgado, C.
name: Schumacher, R. A.
name: Sharabian, Y. G.
name: Skorodumina, Iu.
name: Smith, G. D.
name: Sokhan, D.
name: Sparveris, N.
name: Stankovic, I.
name: Strakovsky, I. I.
name: Strauch, S.
name: Taiuti, M.
name: Tian, Ye
name: Ungaro, M.
name: Voskanyan, H.
name: Voutier, E.
name: Walford, N. K.
name: Watts, D. P.
name: Wei, X.
name: Weinstein, L. B.
name: Wood, M. H.
name: Zachariou, N.
name: Zhang, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report measurements of target- and double-spin asymmetries for the exclusive channel $\vec e\vec p\to eπ^+ (n)$ in the nucleon resonance region at Jefferson Lab using the CEBAF Large Acceptance Spectrometer (CLAS). These asymmetries were extracted from data obtained using a longitudinally polarized NH$_3$ target and a longitudinally polarized electron beam with energies 1.1, 1.3, 2.0, 2.3 and 3.0 GeV. The new results are consistent with previous CLAS publications but are extended to a low $Q^2$ range from $0.0065$ to $0.35$ (GeV$/c$)$^2$. The $Q^2$ access was made possible by a custom-built Cherenkov detector that allowed the detection of electrons for scattering angles as low as $6^\circ$. These results are compared with the unitary isobar models JANR and MAID, the partial-wave analysis prediction from SAID and the dynamic model DMT. In many kinematic regions our results, in particular results on the target asymmetry, help to constrain the polarization-dependent components of these models.
description: 20 pages, 15 figures, to appear in Phys. Rev. C