Meson and tetra-quark mixing

Journal Article · Thu May 01 04:00:00 EDT 2008 · European Physical Journal C

DOI:https://doi.org/10.1140/epjc/s10052-008-0605-7· OSTI ID:955831

Wang, Ping; Cotanch, Stephen; General, Ignacio

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.

• Research Organization: Thomas Jefferson Lab National Accelerator Facility
• Sponsoring Organization: USDOE
• OSTI ID: 955831
• Report Number(s): JLAB-THY-08-778; arXiv:0801.4810; DOE/OR/23177-0327
• Journal Information: European Physical Journal C, Journal Name: European Physical Journal C Vol. 55
• Country of Publication: United States
• Language: English