Low-energy eta-d resonance

Details Low-energy eta-d resonance Low-energy eta-d resonance

1999-08-10

arxiv.org/abs/nucl-th/9908035v1

Eur.Phys.J. A9 (2000) 143-146

Physics

Nuclear Physics

Nuclear Theory

13 pages, LaTeX (revtex.sty), 5 figures (epsfig), submitted to Phys.Rev.Lett

Scientific paper

10.1007/s100500070064

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_{\eta N}. The position of the resonance moves towards the eta-d threshold when Re a_{\eta N} is increased, and turns into a quasi-bound state at Re a_{\eta N}=0.733 fm.

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