Most Strange Dibaryon ΩΩ from Lattice QCD

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  • 大規模な格子QCD計算が予言する複合粒子「ダイオメガ」
  • ダイキボ ナ コウシ QCD ケイサン ガ ヨゲン スル フクゴウ リュウシ 「 ダイオメガ 」

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Abstract

<p>We study the ΩΩ system in the 1S0 channel on the basis of the (2+1)-flavor lattice QCD simulations using a large volume (8.1 fm)3 and nearly physical pion mass mπ≃146 MeV. The obtained ΩΩ interaction is qualitatively similar to the central potential of the nucleon-nucleon interaction, i.e., the short range repulsion and the intermediate range attraction. We show that the attraction leads to the most strange dibaryon, di-Omega, which is located near the unitary limit. Such a system can be searched experimentally by two-Ω correlation in relativistic heavy-ion collisions.</p>

Journal

  • Butsuri

    Butsuri 74 (12), 845-849, 2019-12-05

    The Physical Society of Japan

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