Abstract

The γp → η‧p reaction was studied near the threshold, in the 1.44 GeV> E_γ < 1.55GeV energy range with the tagged photons of the former GRAAL experiment. The two neutral decays γγ(Γ_i/Γ = 2.10 ± 0.12%) and π⁰π⁰η(Γ_i/Γ = 20.7 ± 1.2%) were analized and preliminary results of the beam asymmetry were extracted together with the invariant masses.

M. Manganaro, V. Bellini, J. P. Bocquet, L. Casano, A. D’Angelo, J. P. Didelez, R. Di Salvo, A. Fantini, D. Franco, G. Gervino, F. Ghio, G. Giardina, B. Girolami, A. Giusa, A. S. Ignatov, A. Lapik, A. Lleres, P. Levi Sandri, F. Mammoliti, G. Mandaglio, M. Moricciani, A. N. Mushkarenkov, V. G. Nedorezov, C. Randieri, D. Rebreyend, N. V. Rudnev, G. Russo, C. Schaerf, M. L. Sperduto, M. C. Sutera, A. Turinge, V. Vegna (2010)

International Journal of Modern Physics E – June 2010, Vol. 19, Issues 5-6, pp. 1177-1182, ISSN: 0218-3013, doi: 10.1142/S0218301310015643.

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The International Journal of Modern Physics E covers the topics on experimental, theoretical and computational nuclear science, and its applications and interface with astrophysics and particle physics. The journal includes both review articles and research papers.