Bound States of (Anti-)Scalar-Quarks in SU(3)_c Lattice QCD

Details Bound States of (Anti-)Scalar-Quarks in SU(3)_c Lattice QCD Bound States of (Anti-)Scalar-Quarks in SU(3)_c Lattice QCD

2006-12-17

arxiv.org/abs/hep-lat/0612019v2

AIPConf.Proc.915:256-259,2007

Physics

High Energy Physics

High Energy Physics - Lattice

Talk given at The 17th International Spin Physics Symposium (SPIN2006), Kyoto, Japan, 2-7 Oct 2006

Scientific paper

10.1063/1.2750775

Light scalar-quarks \phi (colored scalar particles or idealized diquarks) and their color-singlet hadronic states are studied with quenched SU(3)_c lattice QCD in terms of mass generation. We investigate ``scalar-quark mesons'' \phi^\dagger \phi and ``scalar-quark baryons'' \phi\phi\phi as the bound states of scalar-quarks \phi. We also investigate the bound states of scalar-quarks \phi and quarks \psi, i.e., \phi^\dagger \psi, \psi\psi\phi and \phi\phi\psi, which we name ``chimera hadrons''. All the new-type hadrons including \phi are found to have a large mass due to large quantum corrections by gluons, even for zero bare scalar-quark mass m_\phi=0 at a^{-1}\sim 1{\rm GeV}. We conjecture that all colored particles generally acquire a large effective mass due to dressed gluon effects.

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