3 years ago

Baryon interactions from lattice QCD with physical quark masses -- Nuclear forces and $\Xi\Xi$ forces --.

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

We present the latest lattice QCD results for baryon interactions obtained at nearly physical quark masses. $N_f = 2+1$ nonperturbatively ${\cal O}(a)$-improved Wilson quark action with stout smearing and Iwasaki gauge action are employed on the lattice of $(96a)^4 \simeq (8.1\mbox{fm})^4$ with $a^{-1} \simeq 2.3$ GeV, where $m_\pi \simeq 146$ MeV and $m_K \simeq 525$ MeV. In this report, we study the two-nucleon systems and two-$\Xi$ systems in $^1S_0$ channel and $^3S_1$-$^3D_1$ coupled channel, and extract central and tensor interactions by the HAL QCD method. We also present the results for the $N\Omega$ interaction in $^5S_2$ channel which is relevant to the $N\Omega$ pair-momentum correlation in heavy-ion collision experiments.

Publisher URL: http://arxiv.org/abs/1711.01952

DOI: arXiv:1711.01952v1

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