E-viri
Recenzirano
-
Bartalini, O.; Bellini, V.; Bocquet, J. P.; Capogni, M.; Casano, L.; Castoldi, M.; Calvat, P.; D'Angelo, A.; Di Salvo, R.; Fantini, A.; Gaulard, C.; Gervino, G.; Ghio, F.; Girolami, B.; Giusa, A.; Kouznetsov, V.; Lapik, A.; Levi Sandri, P.; Lleres, A.; Moricciani, D.; Mushkarenkov, A. N.; Nedorezov, V.; Nicoletti, L.; Perrin, C.; Rebreyend, D.; Renard, F.; Rudnev, N.; Russew, T.; Russo, G.; Schaerf, C.; Sperduto, M. -L.; Sutera, M. -C.; Turinge, A.
The European physical journal. A, Hadrons and nuclei, 12/2005, Letnik: 26, Številka: 3Journal Article
Neutral pion photoproduction has been measured from 550 to 1500 MeV with the GRAAL facility, located at the ESRF in Grenoble. Differential cross-section and beam asymmetry have been measured over a wide angular range. These high-precision data improve significantly the database for the beam asymmetry in the second and third resonance regions covering for the first time the energy domain 1100-1500 MeV. New partial-wave analyses including these data are presented for which the beam asymmetry brings crucial constraints.
