The spectrum of Kaon States in the Isodoublet strangeness S = 1 T1u Channel by the Stochastic LapH Method in Lattice QCD

摘要: Lattice QCD calculations of energies in bosonic channels have mostly been restricted to the use quark-antiquark meson operators due computational challenges associated with evaluating correlation functions multi-meson operators. The stochastic LapH method has provided an efficient way compute involving multi-hadron This is applied construct a 58×58 matrix using 9 single-meson and 49 two-meson isodoublet strangeness S = 1 T1u channel, which contains spin-1 spin-3 kaon states. temporal correlations evaluated Monte Carlo ensemble 551 configurations on anisotropic 24 × 128 lattice. Due limitations, light quark masses are used that produce unphysically heavy pion having mass around 390 MeV, but strange tuned its physical value. A clover-improved Wilson fermion action generating ensemble, correlators formed source sink constructed out Laplacian Heaviside smeared fields displaced stout-smeared gauge links. Overlap factors identify finite-volume eigenstates should evolve into resonances infinite volume. These results compared experiment from previous study for isovector nonstrange T 1u channel.