Baryon interactions from lattice QCD with physical masses -- Overview and S = 0, -4 sectors --

2017/02/06 by Takumi Doi, Doi, Takumi, Sinya Aoki +21
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1702.01600

openalex publication_date 2017/02/06 · openalex created_date 2017/02/17 · openalex updated_date 2026/07/28

Abstract

Nuclear forces and hyperon forces are studied by lattice QCD. Simulations are performed with (almost) physical quark masses, m_π≃ 146 MeV and m_K ≃ 525 MeV, where N_f=2+1 nonperturbatively \cal O(a)-improved Wilson quark action with stout smearing and Iwasaki gauge action are employed on the lattice of (96a)⁴ ≃ (8.1fm)⁴ with a^-1 ≃ 2.3 GeV. In this report, we give the overview of the theoretical framework and present the numerical results for two-nucleon forces (S=0) and two-Ξ forces (S=-4). Central forces are studied in ¹S₀ channel, and central and tensor forces are obtained in ³S₁-³D₁ coupled channel analysis.

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