2019 Volume 74 Issue 12 Pages 845-849
We study the ΩΩ system in the 1S0 channel on the basis of the (2+1)-flavor lattice QCD simulations using a large volume (8.1 fm)3 and nearly physical pion mass mπ≃146 MeV. The obtained ΩΩ interaction is qualitatively similar to the central potential of the nucleon-nucleon interaction, i.e., the short range repulsion and the intermediate range attraction. We show that the attraction leads to the most strange dibaryon, di-Omega, which is located near the unitary limit. Such a system can be searched experimentally by two-Ω correlation in relativistic heavy-ion collisions.