Threshold scattering of the eta-meson off light nuclei
arXiv:nucl-th/9504020 · doi:10.1016/0370-2693(95)01057-W
Abstract
The scattering lengths of eta-meson collisions with light nuclei d,t,3He, and 4He are calculated on the basis of few-body equations in coherent approximation. It is found that the eta-nucleus scattering length depends strongly on the number of nucleons and the potential-range parameter. By taking into account the off-shell behavior of the eta-N amplitude, the eta-4He scattering length increases considerably.
8 pages, no figures, RevTeX, submitted to Phys.Lett.B