Possible $ΔΔ$ dibaryons in the quark cluster model

Details Possible $ΔΔ$ dibaryons in the quark cluster model Possible $ΔΔ$ dibaryons in the quark cluster model

1999-10-26

arxiv.org/abs/nucl-th/9910066v1

J.Phys.G26:1207-1216,2000

Physics

Nuclear Physics

Nuclear Theory

LeTex with 2 ps figures

Scientific paper

10.1088/0954-3899/26/8/308

In the framework of RGM, the binding energy of one channel $\Delta\Delta_{(3,0)}$($d^*$) and $\Delta\Delta_{(0,3)}$ are studied in the chiral SU(3) quark cluster model. It is shown that the binding energies of the systems are a few tens of MeV. The behavior of the chiral field is also investigated by comparing the results with those in the SU(2) and the extended SU(2) chiral quark models. It is found that the symmetry property of the $\Delta\Delta$ system makes the contribution of the relative kinetic energy operator between two clusters attractive. This is very beneficial for forming the bound dibaryon. Meanwhile the chiral-quark field coupling also plays a very important role on binding. The S-wave phase shifts and the corresponding scattering lengths of the systems are also given.

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