Two-baryon potentials and H-dibaryon from 3-flavor lattice QCD simulations
By T. Inoue, S. Aoki, T. Doi, T. Hatsuda, Y. Ikeda, N. Ishii, K. Murano, H. Nemura, K. Sasaki. 2011
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Abstract Baryon–baryon potentials are obtained from 3-flavor QCD simulations with the lattice volume L ≃ 4 fm , the lattice spacing a ≃ 0.12 fm , and the pseudo-scalar-meson mass M ps = 469 – 1171 MeV . The NN scattering phase-shifts and the mass of H-dibaryon in the flavor SU ( 3 ) limit are extracted from the resultant potentials by solving the Schrodinger equation. The NN phase-shifts in the SU ( 3 ) limit is shown to have qualitatively similar behavior as the experimental data. A bound H-dibaryon in the SU ( 3 ) limit is found to exist in the flavor-singlet J P = 0 + channel with the binding energy of about 26 MeV for the lightest quark mass M ps = 469 MeV . Effect of flavor SU ( 3 ) symmetry breaking on the H-dibaryon is estimated by solving the coupled-channel Schrodinger equation for Λ Λ – N Ξ – Σ Σ with the physical baryon masses and the potential matrix obtained in the SU ( 3 ) limit: a resonant H-dibaryon is found between ΛΛ and NΞ thresholds in this treatment.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/c3d493b18bc32c6453a7c4073c7e277c3dd220d5
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In Nuclear and High Energy Physics
Citations in the corpus
- Exotic Hadrons from Heavy Ion Collisions (2017, background): “Lattice calculations show that the H dibaryon becomes bound in the massive pion cases [80, 81], and it may evolve to a resonance near the ΞN threshold at a smaller pion mass and with the SU(3) f breaking effects, by combining physical hadron masses with the SU(3) symmetric potentials at unphysical q”