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$\Lambda\Lambda$ and N$\Xi$ interactions from Lattice QCD near the physical point

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arxiv 1912.08630 v2 pith:KINALCHH submitted 2019-12-18 hep-lat hep-phnucl-th

Kenji Sasaki , Sinya Aoki , Takumi Doi , Shinya Gongyo , Tetsuo Hatsuda , Yoichi Ikeda , Takashi Inoue , Takumi Iritani
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Noriyoshi Ishii Keiko Murano Takaya Miyamoto (HAL QCD Collaboration)
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classification hep-lathep-phnucl-th
keywords lambdalatticeinteractioninteractionsnearphysicalpointsimeq
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The $S$-wave $\Lambda\Lambda$ and $N \Xi$ interactions are studied on the basis of the (2+1)-flavor lattice QCD simulations close to the physical point ($m_\pi \simeq 146{\rm{MeV}}$ and $m_K \simeq 525{\rm{MeV}}$). 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 $\Lambda \Lambda$ interaction at low energies shows only a weak attraction, which does not provide a bound or resonant dihyperon. The $N\Xi$ interaction in the spin-singlet and isospin-singlet channel is most attractive and lead the $N\Xi$ 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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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. $S$-wave kaon-nucleon interactions from lattice QCD at the physical point

    hep-lat 2025-08 conditional novelty 6.0 of 10

    First physical-point lattice QCD calculation of S-wave kaon-nucleon interactions finds no resonance or bound state, with scattering lengths -0.226(5) fm (I=1) and +0.031(62) fm (I=0).

  2. From hyperon--nucleon interactions to deuteron--hyperon femtoscopy

    nucl-th 2026-07 conditional novelty 5.0 of 10

    Folded HAL-QCD potentials yield no dY bound states but a large dΛ scattering length and strong low-k correlation enhancement, with feed-down from Σ and Ξ clearly reshaping the observed dΛ signal.

  3. Perspectives for hyperon and hypernuclei physics

    nucl-th 2025-06 unverdicted novelty 2.0 of 10

    Hypernuclei are reviewed as key probes of the strong interaction, with upcoming experiments and higher-order theory expected to resolve the hypertriton binding energy and charge symmetry puzzles.

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