The GRAAL experiment: Beam polarization asymmetries in pseudoscalar meson photoproduction

Di Salvo, R Ajaka, J Anghinolfi, M Bartalini, O Bellini, V Berrier, G Bocquet, JP Breuer, M Calvat, P Capogni, M Casano, L Castoldi, M Ciciani, L Corvisiero, P D'Angelo, A Didelez, JP Djalali, C Duval, MA Frascaria, R Gaulard, C Gervino, G Ghio, F Girard, P Girolami, B Guidal, M Guinault, E Hourany, E Kuznetsov, V Lapik, A Sandri, PL Lleres, A Moricciani, D Morlet, M Nedorezov, V Nicoletti, L Perrin, C Rebreyend, D Renard, F Ripani, M Rosier, L Rossi, P Rudnev, N Sanzone, M Schaerf, C Sperduto, ML Sudov, A Taiuti, M Turinge, A Van de Wiele, J Zucchiatti, A

R. Di Salvo et al., The GRAAL experiment: Beam polarization asymmetries in pseudoscalar meson photoproduction, CZEC J PHYS, 49, 1999, pp. 43-48

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INGLESE

Article

Physics

CZECHOSLOVAK JOURNAL OF PHYSICS

0011-4626 → ACNP

49

1999

2

43 - 48

ISI

0011-4626(1999)49:<43:TGEBPA>2.0.ZU;2-9

The GRAAL tagged and polarized gamma beam has been operating with a maximum energy of 1100 MeV. For the first time asymmetry results in eta photoprodu ction were obtained and will be shown. Interesting results have also been o btained for pi(0) and pi(+) photo-production, that largely confirm the alre ady existing ones, but also extend in not yet explored angular and energeti c regions, especially for backward scattering and energies greater than 900 MeV.