QCD Coulomb gauge approach to exotic hadrons
Department of Physics, North Carolina State University, 27695-8202, Raleigh, NC, USA
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Accepted: 15 November 2006
Published online: 8 March 2007
The Coulomb gauge Hamiltonian model is used to calculate masses for selected JPC states consisting of exotic combinations of quarks and gluons: ggg glueballs (oddballs), q¯g hybrid mesons and q¯q¯ tetraquark systems. An odderon Regge trajectory is computed for the J- glueballs with intercept much smaller than the pomeron, explaining its nonobservation. The lowest 1-+ hybrid-meson mass is found to be just above 2.2GeV while the lightest tetraquark state mass with these exotic quantum numbers is predicted around 1.4GeV consistent with the observed π(1400).
PACS: 12.38.Lg Other nonperturbative calculations – / 12.39.Ki Relativistic quark model – / 12.39.Mk Glueball and nonstandard multi-quark/gluon states – / 12.40.Yx Hadron mass models and calculations –
© Società Italiana di Fisica and Springer-Verlag, 2007