Beane, Silas R.Chang, EmmanuelDetmold, WilliamLin, H. W.Luu, Thomas C.Orginos, KostasParreño García, AssumptaSavage, Martin J.Torok, AaronWalker-Loud, AndréNPLQCD Collaboration2019-04-082019-04-082012-03-011550-7998https://hdl.handle.net/2445/131770Results of a high-statistics, multivolume lattice QCD exploration of the deuteron, the dineutron, the H-dibaryon, and the Ξ − Ξ − system at a pion mass of m π ∼ 390     MeV are presented. Calculations were performed with an anisotropic n f = 2 + 1 clover discretization in four lattice volumes of spatial extent L ∼ 2.0 , 2.5, 2.9, and 3.9 fm, with a lattice spacing of b s ∼ 0.123     fm in the spatial direction and b t ∼ b s / 3.5 in the time direction. Using the results obtained in the largest two volumes, the Ξ − Ξ − is found to be bound by B Ξ − Ξ − 0 = 14.0 ( 1.4 ) ( 6.7 )     MeV , consistent with expectations based upon phenomenological models and low-energy effective field theories constrained by nucleon-nucleon and hyperon-nucleon scattering data at the physical light-quark masses. Further, we find that the deuteron and the dineutron have binding energies of B d = 11 ( 05 ) ( 12 )     MeV and B n n = 7.1 ( 5.2 ) ( 7.3 )     MeV , respectively. With an increased number of measurements and a refined analysis, the binding energy of the H-dibaryon is B H = 13.2 ( 1.8 ) ( 4.0 )     MeV at this pion mass, updating our previous result.15 p.application/pdfeng(c) American Physical Society, 2012Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article6061312019-04-08info:eu-repo/semantics/openAccess