Abstract
We calculated the mass and width of the d′ resonance inside nuclei within a nucleon-Δ model by including the self-energy of the Δ in the NΔ propagator. We found that in the nuclear medium the width of the d′ is increased by 1 order of magnitude while its mass changes only by a few MeV. This broadening of the width of the d′ resonance embedded in nuclei is consistent with the experimental observations so that the d′ can be understood as a NΔ resonance. Thus, given the freedom between either isospin 0 or isospin 2 for the d′, our results give weight to the isospin-2 assignment.
| Original language | English |
|---|---|
| Pages (from-to) | 1010-1014 |
| Number of pages | 5 |
| Journal | Physical Review C |
| Volume | 54 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 1996 |