Existence and internal structure of the H dibaryon

Determine whether the H dibaryon exists and characterize its internal structure, including whether the uuddss system forms a compact six-quark configuration, a baryon–baryon configuration, or a mixture of these configurations.

Background

The paper introduces the H dibaryon as a hypothetical uuddss state with commonly assigned quantum numbers I=0, S=-2, and J^P=0^+. It may be realized as a compact six-quark configuration, a baryon–baryon state, or a mixture of different configurations.

The authors note that lattice QCD, effective field theory, constituent-quark models, and other approaches have produced evidence for attraction or bound states in related channels, but have not settled the physical existence or microscopic structure of the H dibaryon.