Abstract
The problem of the near vanishing of the Gamow-Teller transition (GT) in the A = 14 system between the lowest J = 0+ T = 1 and J = 1+ T = 0 states is revisited. The model space is extended from the valence space (p-2) to the valence space plus all 2ℏω 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) |
|---|---|
| Article number | 067305 |
| Pages (from-to) | 673051-673054 |
| Number of pages | 4 |
| Journal | Physical Review C - Nuclear Physics |
| Volume | 60 |
| Issue number | 6 |
| State | Published - Dec 1999 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics