Mass and width of the $d'$ resonance in nuclei

Details Mass and width of the $d'$ resonance in nuclei Mass and width of the $d'$ resonance in nuclei

1996-06-19

arxiv.org/abs/nucl-th/9606036v1

Phys.Rev.C54:1010-1014,1996

Physics

Nuclear Physics

Nuclear Theory

14 pages, RevteX type, 2 eps figures. To be published in Phys. Rev. C (September)

Scientific paper

10.1103/PhysRevC.54.1010

We calculated the mass and width of the $d'$ resonance inside nuclei within a nucleon-$\Delta$ model by including the self-energy of the $\Delta$ in the $N\Delta$ propagator. We found that in the nuclear medium the width of the $d'$ is increased by one 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 $N\Delta$ resonance. Thus, given the freedom between either isospin 0 or isospin 2 for the $d'$, our results give weigth to the isospin-2 assignment.

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