arXiv:nucl-th/0108031·v1·Nuclear Theory
Coherent Photoproduction of eta-mesons on Three-Nucleon Systems
N. V. Shevchenko🇷🇺 · V. B. Belyaev🇷🇺 · S. A. Rakityansky🇿🇦 · S. A. Sofianos🇿🇦 · W. Sandhas🇩🇪
Abstract
A microscopic few-body description of near-threshold coherent photoproduction of the eta-meson on tritium and He3 targets is given. The photoproduction cross-section is calculated using the Finite Rank Approximation (FRA) of the nuclear Hamiltonian. The results indicate a strong final state interaction of the eta-meson with the residual nucleus. Sensitivity of the results to the choice of the eta-N T-matrix is investigated. The importance of obeying the two-body unitarity condition in the eta-N system is demonstrated.
Comments: 17 pages, RevTeX, 5 eps-figures, submitted to Phys. Rev. C