Possible H-like dibaryon states with heavy quarks

Possible H-like dibaryon states Lambda(c)Lambda(c) and Lambda(b)Lambda(b) are investigated within the framework of the quark delocalization color screening model. The results show that the interaction between two Lambda(c)'s is repulsive, so it cannot be a bound state by itself. However, the strong attraction in Sigma(c)Sigma(c) and Sigma(c)* Sigma(c)* channels and the strong channel coupling, due to the central interaction of one-gluon exchange and one-pion exchange, among Sigma(c)Sigma(c), Sigma(c)Sigma(c) and Sigma(c)*Sigma(c)* push the energy of system below the threshold of Lambda(c)Lambda(c) by 3-20 MeV. The Lambda(b)Lambda(b) system has properties similar to those of the Lambda(c)Lambda(c) system, and a bound state is also possible in the Lambda(b)Lambda(b) system.