https://doi.org/10.1051/epjconf/201817505009
Baryon interactions from lattice QCD with physical quark masses – Nuclear forces and ΞΞ forces –
1
Theoretical Research Division, Nishina Center, RIKEN, Wako 351-0198, Japan
2
iTHEMS Program and iTHES Research Group, RIKEN, Wako 351-0198, Japan
3
Center for Gravitational Physics, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
4
Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
5
Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
6
Nihon University, College of Bioresource Sciences, Kanagawa 252-0880, Japan
* Speaker, e-mail: doi@ribf.riken.jp
Published online: 26 March 2018
We present the latest lattice QCD results for baryon interactions obtained at nearly physical quark masses. Nf = 2 + 1 nonperturbatively O(a)-improved Wilson quark action with stout smearing and Iwasaki gauge action are employed on the lattice of (96a)4 ≃(8.1fm)4 with a-1 ≃2.3 GeV, where mπ ≃146 MeV and mK ≃525 MeV. In this report, we study the two-nucleon systems and two-Ξ systems in 1S0 channel and 3S1-3D1 coupled channel, and extract central and tensor interactions by the HAL QCD method. We also present the results for the NΩ interaction in 5S2 channel which is relevant to the NΩ pair-momentum correlation in heavy-ion collision experiments.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
