Low-energy ηd-resonance
Abstract: Elastic ηd-scattering is considered within the Alt-Grassberger-Sandhas (AGS) formalism for various ηN input data. A three-body resonant state is found close to the ηd threshold. This resonance is sustained for different choices of the two-body ηN-scattering length aηN. The position of the resonance moves towards the ηd threshold when ReaηN is increased, and turns into a quasi-bound state at ReaηN∼ 0.7-0.8 fm depending on the choice of ImaηN.