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We perform the first study for the bound states of colored scalar particles$\phi$ ("scalar quarks") in terms of mass generation with quenched SU(3)$_c$lattice QCD. We investigate the bound states of $\phi$, $\phi^\dagger\phi$ and$\phi\phi\phi$ ("scalar-quark hadrons"), as well as the bound states of $\phi$and quarks $\psi$, i.e., $\phi^\dagger\psi$, $\psi\psi\phi$ and $\phi\phi\psi$("chimera hadrons"). All these new-type hadrons including $\phi$ have a largemass of several GeV due to large quantum corrections by gluons, even for zerobare scalar-quark mass $m_\phi=0$ at $a^{-1}\sim 1{\rm GeV}$. We find a similar$m_\psi$-dependence between $\phi^\dagger\psi$ and $\phi\phi\psi$, whichindicates their similar structure due to the large mass of $\phi$. From thisstudy, we conjecture that all colored particles generally acquire a largeeffective mass due to dressed gluons.

Properties of Scalar-Quark Systems in SU(3)c Lattice QCD