Omega-Omega interaction from 2+1-flavor lattice quantum chromodynamics. Yamada, M., Sasaki, K., Aoki, S., Doi, T., Hatsuda, T., Ikeda, Y., Inoue, T., Ishii, N., Murano, K., & Nemura, H. Prog. Theor. Exp. Phys., 2015(7):071B01--071B01, Physical Society of Japan, jul, 2015.
Omega-Omega interaction from 2+1-flavor lattice quantum chromodynamics [link]Paper  doi  abstract   bibtex   
We investigate the interaction between $\Omega$ baryons in the 1S0 channel from 2+1-flavor lattice quantum chromodynamics (QCD) simulations. On the basis of the HAL QCD method, the $\Omega$$\Omega$ potential is extracted from the Nambu-Bethe-Salpeter wave function calculated on the lattice by using the PACS-CS gauge configurations with a lattice spacing of a ≃ 0.09 fm, a lattice volume of L ≃ 2.9 fm, and quark masses corresponding to m$\pi$ ≃ 700MeV and m$\Omega$ ≃ 1970MeV. The $\Omega$$\Omega$ potential has a repulsive core at short distances and an attractive well at intermediate distances. Accordingly, the phase shift obtained from the potential shows moderate attraction at low energies. Our data indicate that the $\Omega$$\Omega$ system with the present quark masses may appear close to the unitary limit where the scattering length diverges.
@article{Yamada2015,
abstract = {We investigate the interaction between $\Omega$ baryons in the 1S0 channel from 2+1-flavor lattice quantum chromodynamics (QCD) simulations. On the basis of the HAL QCD method, the $\Omega$$\Omega$ potential is extracted from the Nambu-Bethe-Salpeter wave function calculated on the lattice by using the PACS-CS gauge configurations with a lattice spacing of a ≃ 0.09 fm, a lattice volume of L ≃ 2.9 fm, and quark masses corresponding to m$\pi$ ≃ 700MeV and m$\Omega$ ≃ 1970MeV. The $\Omega$$\Omega$ potential has a repulsive core at short distances and an attractive well at intermediate distances. Accordingly, the phase shift obtained from the potential shows moderate attraction at low energies. Our data indicate that the $\Omega$$\Omega$ system with the present quark masses may appear close to the unitary limit where the scattering length diverges.},
author = {Yamada, Masanori and Sasaki, Kenji and Aoki, Sinya and Doi, Takumi and Hatsuda, Tetsuo and Ikeda, Yoichi and Inoue, Takashi and Ishii, Noriyoshi and Murano, Keiko and Nemura, Hidekatsu},
doi = {10.1093/ptep/ptv091},
journal = {Prog. Theor. Exp. Phys.},
month = {jul},
number = {7},
pages = {071B01--071B01},
publisher = {Physical Society of Japan},
title = {{Omega-Omega interaction from 2+1-flavor lattice quantum chromodynamics}},
url = {http://ptep.oxfordjournals.org/lookup/doi/10.1093/ptep/ptv091},
volume = {2015},
year = {2015}
}

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