Meson and tetra-quark mixing

Details Meson and tetra-quark mixing Meson and tetra-quark mixing

2008-01-31

arxiv.org/abs/0801.4810v1

Eur.Phys.J.C55:409-415,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 6 figures

Scientific paper

10.1140/epjc/s10052-008-0605-7

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.

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