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arXiv · 1711.01952

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

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

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 $m_π\simeq 146$ MeV and $m_K \simeq 525$ MeV. In this report, we study the two-nucleon systems and two-$Ξ$ 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 $NΩ$ interaction in $^5S_2$ channel which is relevant to the $NΩ$ pair-momentum correlation in heavy-ion collision experiments.

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Takumi Doi, Takumi Iritani, Sinya Aoki, Shinya Gongyo, Tetsuo Hatsuda, Yoichi Ikeda, Takashi Inoue, Noriyoshi Ishii, Takaya Miyamoto, Hidekatsu Nemura, Kenji Sasaki. 2017-11-03. Baryon interactions from lattice QCD with physical quark masses -- Nuclear forces and $ΞΞ$ forces --. https://doi.org/10.1051/epjconf%2F201817505009

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