Abstract
The problem of the near vanishing of the Gamow-Teller transition (GT) in the [Formula Presented] system between the lowest [Formula Presented] and [Formula Presented] states is revisited. The model space is extended from the valence space [Formula Presented] to the valence space plus all [Formula Presented] excitations. The question is addressed as to what features of the effective nucleon-nucleon interaction in the medium are required to obtain the vanishing GT strength in this extended space. It turns out that a combination of a realistic strength of the tensor force combined with a spin-orbit interaction which is enhanced as compared to the free interaction yields a vanishing GT strength. Such an interaction can be derived from a microscopic meson exchange potential if the enhancement of the small component of the Dirac spinors for the nucleons is taken into account.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4 |
| Number of pages | 1 |
| Journal | Physical Review C - Nuclear Physics |
| Volume | 60 |
| Issue number | 6 |
| DOIs | |
| State | Published - 1999 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics