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arXiv · nucl-th/9908035

Low-energy eta-d resonance

N. V. Shevchenko·V. B. Belyaev·S. A. Rakityansky·S. A. Sofianos·W. Sandhas
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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.

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N. V. Shevchenko, V. B. Belyaev, S. A. Rakityansky, S. A. Sofianos, W. Sandhas. 1999-08-10. Low-energy eta-d resonance. https://doi.org/10.1007/s100500070064

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