A prediction of a new dibaryon system (Omega(-)Omega(-)) J(pi)=0(+)

The structure of a new dibaryon (Omega Omega)(0+) is studied and predicted in the framework of the chiral SU(3) quark model by solving a resonating gr oup method equation. The binding energy of this dibaryon is around 100 MeV, the mean root square of the distance between two Omega s is 0.84 fm and th e preliminary estimated mean lifetime is about two times longer than that o f the free Omega. Ail these interesting properties and also the two negativ e charge units it carried could make it be easily identified experimentally in the heavy-ion collision process. The production probability of this new dibaryon in 158A GeV Pb+Pb collision is estimated using the thermal model, which is of the order of 10(-6) to 10(-5) per event. And it is expected, t hat with the increase of temperature, the production rate will also be incr eased.