By a realistic dynamical microscopic reaction approach to He5 we reproduce the empirical positions of the two S matrix poles associated with the 3/2+ resonance, and unambiguously prove that it arises from the t+d channel. The picture is not coherent though, unless the presently adopted +n phase shift, extracted partly from +p scattering data, is assumed to be incorrect. It is pointed out that the analog resonance in Li5 behaves very differently because the shadow pole is located on another Riemann sheet.
ASJC Scopus subject areas
- Physics and Astronomy(all)