Insight into the Scalar Mesons from a Lattice Calculation

Abstract

We study the possibility that the light scalar mesons are (qbar qbar q q) states rather than (qbar q). We perform a lattice QCD calculation of pseudoscalar meson scattering amplitudes, ignoring quark loops and quark annihilation, and find indications that for sufficiently heavy quarks there is a stable four-quark bound state with J^{PC}=0^{++} and non-exotic flavor quantum numbers.

16 pages, revtex, with eps figures

References in corpus (1)

• ${\Lambda }_s(1405)$ and Negative Parity Baryon States

Cited by in corpus (168)

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