HAL : in2p3-00163478, version 1
 arXiv : 0707.1385
 European Physical Journal A 33 (2007) 169-184
 Measurement of $\eta$ photoproduction on the proton from threshold to 1500 MeV
 GRAAL Collaboration(s)
 (2007)
 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.
 Thème(s) : Physique/Physique Nucléaire Expérimentale
 Lien vers le texte intégral : http://fr.arXiv.org/abs/0707.1385
 in2p3-00163478, version 1 http://hal.in2p3.fr/in2p3-00163478 oai:hal.in2p3.fr:in2p3-00163478 Contributeur : Suzanne Robert <> Soumis le : Mardi 17 Juillet 2007, 15:42:47 Dernière modification le : Jeudi 18 Novembre 2010, 14:11:33