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- W2109641766 abstract "We study the hyperon-nucleon (YN) forces by using quenched lattice QCD. The Bethe-Salpeter amplitudes are calculated for the lowest scattering state of the systems so as to obtain the YN potentials. The numerical calculation is twofold: (i) The pΞ 0 potentials and scattering lengths are obtained by using lattice QCD with β = 5.7, the lattice spacing of a = 0.1416(9) fm , on the 32 3 × 32 lattice. Two kinds of ud quark mass are used, corresponding to m π ≃ 0.37 GeV and 0.51 GeV. The spatial lattice volume is (4.5 fm) 3 . The scattering lengths obtained from Lüscher's formula show that the pΞ 0 interactions are both attractive at 1 S 0 and 3 S 1 channels, and the interaction in the 3 S 1 is more attractive than in the 1 S 0 . These attractive forces become stronger as the u, d quark mass decreases. (ii) The pΛ potentials are calculated. The lattice setup is almost same as the former calculation except for the temporal part. The calculation is performed on 32 3 × 48 lattice. Two kinds of ud quark mass are used, corresponding to m π ≃ 0.47 GeV and 0.51 GeV. The lowest scattering energies in the finite lattice volume are calculated." @default.
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- W2109641766 date "2009-04-30" @default.
- W2109641766 modified "2023-10-16" @default.
- W2109641766 title "HYPERON-NUCLEON FORCES CALCULATED FROM LATTICE QCD" @default.
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- W2109641766 doi "https://doi.org/10.1142/s0217751x09045686" @default.
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