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

doi:10.1051/epjconf/201817505009

All issues

Volume 175 (2018)

EPJ Web Conf., 175 (2018) 05009

Abstract

Open Access

Issue		EPJ Web Conf. Volume 175, 2018 35^th International Symposium on Lattice Field Theory (Lattice 2017)


Article Number		05009
Number of page(s)		8
Section		5 Hadron Spectroscopy and Interactions
DOI		https://doi.org/10.1051/epjconf/201817505009
Published online		26 March 2018

EPJ Web of Conferences 175, 05009 (2018)
https://doi.org/10.1051/epjconf/201817505009

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

Takumi Doi¹^,2^*, Takumi Iritani¹, Sinya Aoki¹^,3^,4, Shinya Gongyo¹, Tetsuo Hatsuda¹^,2, Yoichi Ikeda¹^,5, Takashi Inoue¹^,6, Noriyoshi Ishii¹^,5, Takaya Miyamoto¹^,3, Hidekatsu Nemura¹^,5 and Kenji Sasaki¹^,3

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

Abstract

We present the latest lattice QCD results for baryon interactions obtained at nearly physical quark masses. N_f = 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 m_π ≃146 MeV and m_K ≃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.

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/).

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