Prediction of NΩ-like dibaryons with heavy quarks

Possible N Omega-like dibaryons N Omega(ccc) and N Omega(bbb) are investigated within the framework of two quark models: the chiral quark model (ChQM) and quark delocalization color screening model (QDCSM). We find both of these two states are bound in these two models, and the binding energy increases as the quark of the system becomes heavier. In the ChQM, only coupling both color-singlet and hidden-color channels can make the N Omega(ccc) and N Omega(bbb) systems bound. While in the QDCSM, the attraction between N and S Omega(ccc) (or Omega(bbb)) mainly comes from the kinetic energy term due to quark delocalization and color screening. The effect of channel coupling provides more effective attraction to N Omega(ccc) and N Omega(bbb )systems. Besides, the calculation of the low-energy scattering phase shifts, the scattering length, the effective range, and the binding energy (obtained from the scattering length) also supports the existence of the N Omega(ccc) and N Omega(bbb) states. All these properties can provide more information for experimental search for the N Omega-like dibaryons with heavy quarks. And the experimental progress can also check the mechanism of the intermediate-range attraction of the baryon-baryon interaction in quark models.