EPJ Web of Conferences (Jan 2018)

Baryon interactions from lattice QCD with physical quark masses – Nuclear forces and ΞΞ forces –

  • Doi Takumi,
  • Iritani Takumi,
  • Aoki Sinya,
  • Gongyo Shinya,
  • Hatsuda Tetsuo,
  • Ikeda Yoichi,
  • Inoue Takashi,
  • Ishii Noriyoshi,
  • Miyamoto Takaya,
  • Nemura Hidekatsu,
  • Sasaki Kenji

DOI
https://doi.org/10.1051/epjconf/201817505009
Journal volume & issue
Vol. 175
p. 05009

Abstract

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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.