期刊
PHYSICAL REVIEW LETTERS
卷 120, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.212001
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资金
- Joint Institute for Computational Fundamental Science (JICFuS)
- Special Postdoctoral Researchers Program of RIKEN
- RIKEN iTHES Project
- iTHEMS Program
- NSF [PHY1066292, PHY1607611]
- SPIRE (Strategic Program for Innovative REsearch), MEXT [2004:20105001, 20105003, 25800170, 26400281, JP15K17667, JP16H03978, JP16K05340]
- Grants-in-Aid for Scientific Research [25800170, 26400281] Funding Source: KAKEN
The Omega Omega system in the S-1(0) channel (the most strange dibaryon) is studied on the basis of the (2 + 1)-flavor lattice QCD simulations with a large volume (8.1 fm)(3) and nearly physical pion mass m(pi) similar or equal to 146 MeV at a lattice spacing of a similar or equal to 0.0846 fm. We show that lattice QCD data analysis by the HAL QCD method leads to the scattering length a(0) = 4.6(6) ((+1.2)(-0.5)) fm, the effective range r(eff) = 1.27(3)((+0.06)(-0.03)) fm, and the binding energy B-Omega Omega = 1.6(6)((+0.7)(-0.6)) MeV. These results indicate that the Omega Omega system has an overall attraction and is located near the unitary regime. Such a system can be best searched experimentally by the pair-momentum correlation in relativistic heavy-ion collisions.
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