학술논문
Measurement of eta photoproduction on the proton from threshold to 1500 MeV
Document Type
Working Paper
Author
Bartalini, O.; Bellini, V.; Bocquet, J. P.; calvat, P.; Capogni, M.; Casano, L.; Castoldi, M.; D'Angelo, A.; Didelez, J. P.; Di Salvo, R.; Fantini, A.; Franco, D.; Gaulard, C.; Gervino, G.; Ghio, F.; Giardina, G.; Girolami, B.; Giusa, A.; Guidal, M.; Hourany, E.; Kunne, R.; Lapik, A.; Sandri, P. Levi; Lleres, A.; Mammoliti, F.; Mandaglio, G.; Moricciani, D.; Mushkarenkov, A. N.; Nedorezov, V.; Nicoletti, L.; Perrin, C.; Randieri, C.; Rebreyend, D.; Renard, F.; Rudnev, N.; Russew, T.; Russo, G.; Schaerf, C.; Sperduto, M. L.; Sutera, M. C.; Turinge, A.; Vegna, V.
Source
Eur.Phys.J.A33:169-184,2007
Subject
Language
Abstract
Beam asymmetry and differential cross section for the reaction gamma+p->eta+p were measured from production threshold to 1500 MeV photon laboratory energy. The two dominant neutral decay modes of the eta meson, eta->2g and eta->3pi0, were analyzed. The full set of measurements is in good agreement with previously published results. Our data were compared with three models. They all fit satisfactorily the results but their respective resonance contributions are quite different. The possible photoexcitation of a narrow state N(1670) was investigated and no evidence was found.
Comment: 18 pages, 14 figures, 4 tables Submitted to EPJA
Comment: 18 pages, 14 figures, 4 tables Submitted to EPJA