HOW THE H PARTICLE UNRAVELS THE QUARK DYNAMICS

It is shown that the short-range part of the Goldstone boson exchange interaction between the constituent quarks, which explains baryon spec troscopy and the short-range repulsion in the NN system, induces a str ong short-range repulsion in the flavor-singlet state of the S = -2 sy stem with J(P) = 0(+) . This suggests that a deeply bound H-particle s hould not exist. We compare our approach with other models employing d ifferent hyperfine interactions between quarks in the nonperturbative regime of QCD. [S0556-2821(98)04007-7].