Coherent π0η photoproduction on s-shell nuclei

Abstract

Coherent photoproduction of π0η on the deuteron, He3 and He4 nuclei is considered in the energy region from threshold to the lab photon energy 1.2 GeV. The transition amplitude is derived using impulse approximation. Effects of pion absorption are included by means of the Fernbach-Serber-Taylor model. Interaction of the produced η-mesons with the recoiled nucleus is taken into account for the reactions on d and He3. The corresponding ηd and ηHe3 scattering amplitudes are obtained as solutions of the few-body equations for ηNN and η-3N systems. Impact of this interaction on the differential cross section in the region of small relative η-nuclear momenta is discussed.

11 pages, 6 figures

References in corpus (12)

• Unitary Isobar Model - MAID2007
• Measurement of the dp -->3He eta reaction near threshold
• Is there an eta-3He quasi--bound state ?
• Search for the eta-mesic 4He with WASA-at-COSY detector
• Evidence for a parity doublet Delta(1920)P_{33} and Delta(1940)D_{33}$ from γp\to pπ^0η
• First measurement of the circular beam asymmetry in the gamma p --> pi0 eta p reaction
• Evaluation of the polarization observables I^S and I^C in the reaction gamma p --> pi^0 eta p
• Coherent photoproduction of pi^0- and eta-mesons off 7Li
• A study of the $pd\to pd\eta$ reaction
• Spin observables of the reaction pd-3He eta and quasi-bound 3He-eta pole
• Binding vs. scattering length: $\eta$ in light nuclei
• Search for eta-mesic Helium with the WASA-at-COSY detector

Cited by in corpus (5)

• Photoproduction ofeta-pi pairs off nucleons and deuterons
• Coherent pi0-pi0 photoproduction on lightest nuclei
• Resonance-like structure near the $\eta d$ threshold in the $\gamma d${$\to$}${\pi }^0\eta d$ reaction
• Coherent photoproduction of the neutral pion and eta meson on the deuteron at incident energies below 1.15 GeV
• Theoretical study of the $\gamma d\to {\pi }^0\eta d$ reaction