Lattice Study of Low-lying Nonet Scalar Mesons in Quenched Approximation

Abstract

Using lattice QCD simulation in the quenched approximation, we study the $\kappa$ meson, which is ^3P_0 in the quark model, and compare experimental and other lattice data. The $\kappa$ is the lowest scalar meson with strangeness and constitutes the scalar nonet. The obtained mass is much higher than the recent experimental value, and therefore the $\kappa (800)$ is difficult to consider as a simple two-body constituent-quark structure, and may have another unconventional structure.

11pages, 5figures

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Cited by in corpus (28)

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• Glueball nature of the sigma/f_0(600) from pi-pi and gamma-gamma scatterings
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• Studying $\kappa$ meson with a MILC fine lattice
• How we discovered the nonet of light scalar mesons
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