Scalar Particles in Lattice QCD
Teiji Kunihiro, Shin Muroya, Atushi Nakamura, Chiho Nonaka, Motoo Sekiguchi, Hiroaki Wada
Abstract
We report a project to study scalar particles by lattice QCD simulations. After a brief introduction of the current situation of lattice study of the sigma meson, we describe our numerical simulations of scalar mesons, σ and κ. We observe a low sigma mass, mπ<mσ mρ, for which the disconnected diagram plays an important role. For the kappa meson, we obtain higher mass than the experimental value, i.e., mκ 2mK*.
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