The d' dibaryon in the quark-delocalization, color-screening model

Details The d' dibaryon in the quark-delocalization, color-screening model The d' dibaryon in the quark-delocalization, color-screening model

2000-06-19

arxiv.org/abs/nucl-th/0006036v3

Phys.Rev.C62:054007,2000

Physics

Nuclear Physics

Nuclear Theory

12 pp. latex, no figs., 2 tables, additional refs., Report-no was added

Scientific paper

10.1103/PhysRevC.62.054007

We study the questions of the existence and mass of the proposed $d' (IJ^P=00^-)$ dibaryon in the quark-delocalization, color-screening model (QDCSM). The transformation between physical and symmetry bases has been extended to the cases beyond the SU(2) orbital symmetry. Using parameters fixed by baryon properties and $NN$ scattering, we find a mild attraction in the $IJ^P=00^-$ channel, but it is not strong enough to form a deeply bound state as proposed for the $d'$ state. Nor does the (isospin) I=2 N$\Delta$ configuration have a deeply bound state. These results show that if a narrow dibaryon $d'$ state does exist, it must have a more complicated structure.

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