Insight into the Scalar Mesons from a Lattice Calculation
نویسنده
چکیده
We study the possibility that the light scalar mesons are q̄q states rather than q̄q. 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 = 0 and non-exotic flavor quantum numbers.
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تاریخ انتشار 2000