Bound States of (Anti-)Scalar-Quarks in SU(3)c Lattice QCD
H. Iida, H. Suganuma, T. T. Takahashi
Abstract
Light scalar-quarks ϕ(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'' ϕ ϕand ``scalar-quark baryons'' ϕϕϕas the bound states of scalar-quarks ϕ. We also investigate the bound states of scalar-quarks ϕand quarks ψ, i.e., ϕ ψ, ψψϕand ϕϕψ, which we name ``chimera hadrons''. All the new-type hadrons including ϕare found to have a large mass due to large quantum corrections by gluons, even for zero bare scalar-quark mass mϕ=0 at a-1 1 GeV. We conjecture that all colored particles generally acquire a large effective mass due to dressed gluon effects.
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