Lattice QCD studies on baryon interactions in the strangeness -2 sector with physical quark masses

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

doi:10.1051/epjconf/201817505010

Proceedings

Open Access

EPJ Web of Conferences 175, 05010 (2018)
https://doi.org/10.1051/epjconf/201817505010

Lattice QCD studies on baryon interactions in the strangeness -2 sector with physical quark masses

Kenji Sasaki¹^,2^*, Sinya Aoki¹^,2^,3, Takumi Doi²^,4, Shinya Gongyo², Tetsuo Hatsuda²^,4, Yoichi Ikeda²^,5, Takashi Inoue²^,6, Takumi Iritani², Noriyoshi Ishii²^,5 and Takaya Miyamoto¹^,2

¹ Center for Gravitational Physics, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
² Theoretical Research Division, Nishina Center, RIKEN, Wako 351-0198, Japan
³ Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
⁴ iTHEMS Program and iTHES Research Group, RIKEN, Wako 351-0198, 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: kenjis@yukawa.kyoto-u.ac.jp

Published online: 26 March 2018

Abstract

We investigate baryon-baryon (BB) interactions in the strangeness S = −2 sector via the coupled-channel HAL QCD method which enables us to extract the scattering observables from Nambu-Bethe-Salpeter (NBS) wave function on the lattice. The simulations are performed with (almost) physical quark masses (m_π = 146MeV) and a huge lattice volume of La = 8.1fm. We discuss the fate of H-dibaryon state through the ΛΛ and NΞ coupled-channel scatterings

© The Authors, published by EDP Sciences, 2018

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