How the "H-particle" unravels the quark dynamics
Fl. Stancu, S. Pepin, L. Ya. Glozman
Abstract
It is shown that the short-range part of the Goldstone boson exchange interaction between the constituent quarks which explains baryon spectroscopy and the short-range repulsion in the NN system induces a strong short-range repulsion in the flavour-singlet state of the ΛΛ system with JP=0+. It then suggests that a deeply bound H-particle should not exist. We also compare our approach with other models employing different hyperfine interactions between quarks in the nonperturbative regime of QCD.
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