Bound States of (Anti-)Scalar-Quarks in SU(3)_c Lattice QCD
arXiv:hep-lat/0612019 · doi:10.1063/1.2750775
Abstract
Light scalar-quarks Ï(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'' Ï^\dagger Ïand ``scalar-quark baryons'' ÏÏÏas the bound states of scalar-quarks Ï. We also investigate the bound states of scalar-quarks Ïand quarks Ï, i.e., Ï^\dagger Ï, ÏÏÏand ÏÏÏ, which we name ``chimera hadrons''. All the new-type hadrons including Ïare found to have a large mass due to large quantum corrections by gluons, even for zero bare scalar-quark mass m_Ï=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.
Talk given at The 17th International Spin Physics Symposium (SPIN2006), Kyoto, Japan, 2-7 Oct 2006