E-resources
PDF-
Anghinolfi, M; Burkert, V D; Minehart, R; Taiuti, M; Adams, G; Anciant, E; Armstrong, D S; Asavapibhop, B; Asryan, G; Audit, G; Bagdasaryan, H; Battaglieri, M; Bianchi, N; Bonner, B E; Branford, D; Brooks, W K; Bueltmann, S; Carman, D S; Cazes, A; Coleman, A; Cords, D; Crannell, H; De Sanctis, E; Demirchyan, R; Denizli, H; Djalali, C; Doughty, D; Dragovitsch, P; Dytman, S; Egiyan, H; Fatemi, R; Gai, M; Garçon, M; Gilad, S; Gilfoyle, G P; Giovanetti, K L; Hardie, J; Heddle, D; Heimberg, P; Hicks, K; Holtrop, M; Ishkanov, B S; Ito, M M; Kelley, J H; Kellie, J D; Khandaker, M; Klein, A; Klein, F J; Kossov, M; Kramer, L H; Kuang, Y; Lachniet, J; Laget, J M; Livingston, K; Loukachine, K; Lucas, M; Manak, J J; Marchand, C; McAleer, S; Mecking, B A; Mestayer, M D; Mikhailov, K; Mirazita, M; Mueller, J; Niyazov, R A; O'Rielly, G V; Pasyuk, E; Philips, S A; Pivnyuk, N; Pocanic, D; Pogorelko, O; Pozdniakov, S; Prok, Y; Protopopescu, D; Reolon, A R; Riccardi, G; Ripani, M; Ritchie, B G; Rossi, P; Rowntree, D; Rubin, P D; Sabourov, K; Salgado, C; Schumacher, R A; Sharabian, Y G; Skabelin, A V; Smith, T; Sober, D I; Sorrell, L; Stavinsky, A; Stoler, P; Ungaro, M; Vineyard, M F; Wang, K; Weinstein, L B; Weygand, D P; Wolin, E; Yegneswaran, A; Yun, J; Zhou, Z
Physical review letters, 02/2002, Volume: 88, Issue: 8Journal Article
The double spin asymmetry in the (-->)e(-->)p --> e(prime)pi(+)n reaction has been measured for the first time in the resonance region for four-momentum transfer Q2 = 0.35-1.5 GeV(2). Data were taken at Jefferson Lab with the CLAS detector using a 2.6 GeV polarized electron beam incident on a polarized solid NH3 target. Comparison with predictions of phenomenological models shows strong sensitivity to resonance contributions. Helicity-1/2 transitions are found to be dominant in the second and third resonance regions. The measured asymmetry is consistent with a faster rise with Q(2) of the helicity asymmetry A1 for the F(15)(1680) resonance than expected from the analysis of the unpolarized data.
