Mass and width of the {ital d}{sup {prime}} resonance in nuclei
- Grupo de Fisica Nuclear, Universidad de Salamanca, E-37008 Salamanca (Spain)
We calculated the mass and width of the {ital d}{sup {prime}} resonance inside nuclei within a nucleon-{Delta} model by including the self-energy of the {Delta} in the {ital N}{Delta} propagator. We found that in the nuclear medium the width of the {ital d}{sup {prime}} is increased by 1 order of magnitude while its mass changes only by a few MeV. This broadening of the width of the {ital d}{sup {prime}} resonance embedded in nuclei is consistent with the experimental observations so that the {ital d}{sup {prime}} can be understood as a {ital N}{Delta} resonance. Thus, given the freedom between either isospin 0 or isospin 2 for the {ital d}{sup {prime}}, our results give weight to the isospin-2 assignment. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 383314
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 54; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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