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Area of Science:

  • Nuclear Physics
  • Particle Physics
  • Quantum Chromodynamics

Background:

  • Heavy quarks, such as charm and beauty, are fundamental particles in quantum chromodynamics.
  • Dibaryons are exotic hadrons composed of six quarks.

Purpose of the Study:

  • To investigate the existence of very heavy dibaryons with the quark content three charm and three beauty quarks (bbbccc).
  • To rigorously treat the six-body problem, including orbital, color, and spin mixed-symmetry components.

Main Methods:

  • Utilized a constituent quark model, suitable for heavy quark systems.
  • Performed a rigorous treatment of the six-body problem, accounting for complex wave function components.

Main Results:

  • No bound state for the bbbccc dibaryon was found below the lowest dissociation threshold.
  • Results differ from a recent claim based on lattice quantum chromodynamics (QCD).

Conclusions:

  • The constituent model suggests that the bbbccc dibaryon is not a bound state.
  • Further theoretical and experimental investigations are needed to confirm the existence of such heavy dibaryons.