TY - JOUR
T1 - ΛΛ and NΞ interactions from lattice QCD near the physical point
AU - HAL QCD Collaboration
AU - Sasaki, Kenji
AU - Aoki, Sinya
AU - Doi, Takumi
AU - Gongyo, Shinya
AU - Hatsuda, Tetsuo
AU - Ikeda, Yoichi
AU - Inoue, Takashi
AU - Iritani, Takumi
AU - Ishii, Noriyoshi
AU - Murano, Keiko
AU - Miyamoto, Takaya
N1 - Funding Information:
We thank members of PACS Collaboration for the gauge configuration generations. The lattice QCD calculations have been performed on the K computer at RIKEN (hp120281, hp130023,hp140209, hp150223, hp150262, hp160211, hp170230), HOKUSAI FX100 computer at RIKEN (G15023, G16030, G17002) and HA-PACS at University of Tsukuba (14a-20, 15a-30). We thank ILDG/JLDG [32–34] which serves as an essential infrastructure in this study. We thank the authors of cuLGT code [35] for the gauge fixing. This work is supported in part by the Grant-in-Aid of the Japanese Ministry of Education, Sciences and Technology, Sports and Culture ( MEXT ) for Scientific Research (Nos. JP16H03978 , JP18H05236 , JP18H05407 , JP19K03879 ), by SPIRE (Strategic Program for Innovative REsearch), by “Priority Issue on Post-K computer” (Elucidation of the Fundamental Laws and Evolution of the Universe) and by Joint Institute for Computational Fundamental Science (JICFuS).
Funding Information:
We thank members of PACS Collaboration for the gauge configuration generations. The lattice QCD calculations have been performed on the K computer at RIKEN (hp120281, hp130023,hp140209, hp150223, hp150262, hp160211, hp170230), HOKUSAI FX100 computer at RIKEN (G15023, G16030, G17002) and HA-PACS at University of Tsukuba (14a-20, 15a-30). We thank ILDG/JLDG [32–34] which serves as an essential infrastructure in this study. We thank the authors of cuLGT code [35] for the gauge fixing. This work is supported in part by the Grant-in-Aid of the Japanese Ministry of Education, Sciences and Technology, Sports and Culture (MEXT) for Scientific Research (Nos. JP16H03978, JP18H05236, JP18H05407, JP19K03879), by SPIRE (Strategic Program for Innovative REsearch), by “Priority Issue on Post-K computer” (Elucidation of the Fundamental Laws and Evolution of the Universe) and by Joint Institute for Computational Fundamental Science (JICFuS).
Publisher Copyright:
© 2020
PY - 2020/6
Y1 - 2020/6
N2 - The S-wave ΛΛ and NΞ interactions are studied on the basis of the (2+1)-flavor lattice QCD simulations close to the physical point (mπ≃146MeV and mK≃525MeV). Lattice QCD potentials in four different spin-isospin channels are extracted by using the coupled-channel HAL QCD method and are parametrized by analytic functions to calculate the scattering phase shifts. The ΛΛ interaction at low energies shows only a weak attraction, which does not provide a bound or resonant dihyperon. The NΞ interaction in the spin-singlet and isospin-singlet channel is most attractive and lead the NΞ system near unitarity. Relevance to the strangeness = −2 hypernuclei as well as to two-baryon correlations in proton-proton, proton-nucleus and nucleus-nucleus collisions is also discussed.
AB - The S-wave ΛΛ and NΞ interactions are studied on the basis of the (2+1)-flavor lattice QCD simulations close to the physical point (mπ≃146MeV and mK≃525MeV). Lattice QCD potentials in four different spin-isospin channels are extracted by using the coupled-channel HAL QCD method and are parametrized by analytic functions to calculate the scattering phase shifts. The ΛΛ interaction at low energies shows only a weak attraction, which does not provide a bound or resonant dihyperon. The NΞ interaction in the spin-singlet and isospin-singlet channel is most attractive and lead the NΞ system near unitarity. Relevance to the strangeness = −2 hypernuclei as well as to two-baryon correlations in proton-proton, proton-nucleus and nucleus-nucleus collisions is also discussed.
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U2 - 10.1016/j.nuclphysa.2020.121737
DO - 10.1016/j.nuclphysa.2020.121737
M3 - Article
AN - SCOPUS:85081252308
VL - 998
JO - Nuclear Physics A
JF - Nuclear Physics A
SN - 0375-9474
M1 - 121737
ER -