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Scalar Mesons in Lattice QCD

SCALAR Collaboration·Teiji Kunihiro·Shin Muroya·Atsushi Nakamura·Chiho Nonaka·Motoo Sekiguchi·Hiroaki Wada
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Abstract

We explore whether "f$_{0}$(600) or $σ$" exists as a pole in QCD, by a full lattice QCD simulation on the $8^{3} \times 16$ lattice using the plaquette action and Wilson fermions. It is shown that a low-mass $σ$ pole exists owing to the disconnected diagram of the meson propagator. A discussion is given on the physical content of the $σ$.

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SCALAR Collaboration, Teiji Kunihiro, Shin Muroya, Atsushi Nakamura, Chiho Nonaka, Motoo Sekiguchi, Hiroaki Wada. 2003-10-31. Scalar Mesons in Lattice QCD. https://arxiv.org/abs/hep-ph/0310312

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