Abstract
We use an isobar model and first-order perturbation theory to determine the width of resonances that decay into a pion and two nucleons near the πNN threshold. The perturbation is given in this case by the three-body unitarity cuts. As an application we study the case of the d' resonance observed in pionic double-charge-exchange reactions on nuclei. We consider the possible isospin assignments of this resonance and conclude that the isospin 2 assignment is the correct one.
| Original language | English |
|---|---|
| Pages (from-to) | 1101-1107 |
| Number of pages | 7 |
| Journal | Journal of Physics G: Nuclear and Particle Physics |
| Volume | 23 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 1997 |