arXiv:hep-lat/0001023·v1·High Energy Physics — Lattice
Insight into the Scalar Mesons from a Lattice Calculation
Mark Alford (MIT)🇺🇸 · R. L. Jaffe (MIT)🇺🇸
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.
Comments: 16 pages, revtex, with eps figures