Dynamical calculation of $d^*$ mass and NN decay width in the quark delocalization, color screening model

摘要

The mass estimate of the $d^* (IJ^P=03^+)$ dibaryon is improved by adynamical calculation in the quark delocalization, color screening model. Thepartial decay width of $d^*$ into an $NN$ D-wave state is also obtained. Themass obtained is slightly larger than that obtained in adiabatic calculations,due to the anharmonicity of the effective potential between two $\Delta$'s. Thevalue of the width obtained due to tensor one-gluon-exchange is about 5 MeV,comparable in magnitude to earlier results found using pion exchange.