Meson and tetra-quark mixing

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Authors
Wang, Ping
Cotanch, Stephen R.
General, Ignacio J.
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Abstract
Description
The mixing between q-qbar meson and qqbar-qqbar tetra-quark states is examined within an effective QCD Coulomb gauge Hamiltonian model. Mixing matrix elements of the Hamiltonian are computed and then diagonalized yielding an improved prediction for the low-lying J^{PC} = 0^{+/- +}, 1^{--} isoscalar spectra. Mixing effects were found significant for the scalar hadrons but not for the 1^{--} states, which is consistent with the ideal mixing of vector mesons. A perturbative assessment of the exact QCD kernel is also reported.
Comment: 7 pages, 6 figures
Keywords
High Energy Physics - Phenomenology
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