Low-energy eta-d resonance
arXiv:nucl-th/9908035 · doi:10.1007/s100500070064
Abstract
Elastic eta-d scattering is considered within the Alt-Grassberger-Sandhas (AGS) formalism for various eta-N input data. A three-body resonant state is found close to the eta-d threshold. This resonance is sustained for different choices of the two-body eta-N scattering length a_{ηN}. The position of the resonance moves towards the eta-d threshold when Re a_{ηN} is increased, and turns into a quasi-bound state at Re a_{ηN}=0.733 fm.
13 pages, LaTeX (revtex.sty), 5 figures (epsfig), submitted to Phys.Rev.Lett