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arXiv · hep-lat/0001023

Insight into the Scalar Mesons from a Lattice Calculation

Mark Alford·R. L. Jaffe
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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.

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Mark Alford, R. L. Jaffe. 2000-01-20. Insight into the Scalar Mesons from a Lattice Calculation. https://doi.org/10.1016/s0550-3213(00)00155-3

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