Insight into the Scalar Mesons from a Lattice Calculation

Details Insight into the Scalar Mesons from a Lattice Calculation Insight into the Scalar Mesons from a Lattice Calculation

2000-01-20

arxiv.org/abs/hep-lat/0001023v1

Nucl.Phys.B578:367-382,2000

Physics

High Energy Physics

High Energy Physics - Lattice

16 pages, revtex, with eps figures

Scientific paper

10.1016/S0550-3213(00)00155-3

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.

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