Calculations of η-nuclear quasi-bound states in few-body systems
1 Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Břehová 7, 11519 Prague 1, Czech Republic
2 Nuclear Physics Institute, Academy of Sciences of Czech Republic, 250 69 Řež, Czech Republic
3 Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel
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Published online: 1 February 2019
We report on our Stochastic Variational Method (SVM) calculations of η-nuclear quasi-bound states in s-shell nuclei as well as the very recent calculation of the p-shell nucleus 6Li. The ηN potentials used were constructed from ηN scattering amplitudes obtained within coupled-channel models that incorporate N*(1535) resonance. We found that η6Li is bound in the ηN interaction models that yield ReaηN ≥ 0.67 fm. Additional repulsion caused by the imaginary part of ηN potentials shifts the onset of η-nuclear binding to η4He, yielding very likely no quasi-bound state in η3He.
© The Authors, published by EDP Sciences, 2019
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