Measurement of coherent -meson photoproduction from the deuteron at low energies
The cross section and decay angular distributions for the coherent -meson photoproduction on the deuteron have been measured for the first time up to a squared four-momentum transfer t=(pγ-p)2=-2 GeV2/c2, using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The cross sections are compared with predictions from a rescattering model. In a framework of vector meson dominance, the data are consistent with the total -N cross section σN at about 10 mb. If vector meson dominance is violated, a larger σN is possible by introducing a larger t slope for the N→N process than that for the γN→N process. The decay angular distributions of the are consistent with helicity conservation. © 2007 The American Physical Society.
Mibe, T; Gao, H; Hicks, K; Kramer, K; Stepanyan, S; Tedeschi, DJ; Amaryan, MJ; Ambrozewicz, P; Anghinolfi, M; Asryan, G; Audit, G; Avakian, H; Bagdasaryan, H; Baillie, N; Ball, JP; Baltzell, NA; Battaglieri, M; Bedlinskiy, I; Bellis, M; Benmouna, N; Berman, BL; Biselli, AS; Blaszczyk, L; Bouchigny, S; Boiarinov, S; Bradford, R; Branford, D; Briscoe, WJ; Brooks, WK; Bültmann, S; Burkert, VD; Butuceanu, C; Calarco, JR; Careccia, SL; Carman, DS; Chen, S; Cole, PL; Collins, P; Coltharp, P; Crabb, D; Crannell, H; Crede, V; Cummings, JP; Dashyan, N; De Masi, R; De Vita, R; De Sanctis, E; Degtyarenko, PV; Deur, A; Dharmawardane, KV; Dickson, R; Djalali, C; Dodge, GE; Donnelly, J; Doughty, D; Dugger, M; Dzyubak, OP; Egiyan, H; Egiyan, KS; El Fassi, L; Elouadrhiri, L; Eugenio, P; Fedotov, G; Feldman, G; Funsten, H; Garçon, M; Gavalian, G; Gilfoyle, GP; Giovanetti, KL; Girod, FX; Goetz, JT; Gonenc, A; Gordon, CIO; Gothe, RW; Griffioen, KA; Guidal, M; Guler, N; Guo, L; Gyurjyan, V; Hadjidakis, C; Hafidi, K; Hakobyan, H; Hakobyan, RS; Hanretty, C; Hardie, J; Hersman, FW; Hleiqawi, I; Holtrop, M; Hyde-Wright, CE; Ilieva, Y; Ireland, DG; Ishkhanov, BS; Isupov, EL; Ito, MM; Jenkins, D; Jo, HS; Johnstone, JR; Joo, K; Juengst, HG; Kalantarians, N
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