Multiquark colour-hyperfine spectra in the bag model: a survey with the P-matrix formalism

Abstract
The masses of S-wave q 2 q 2 , q 4 q and q 6 multiquark states have been calculated in the M.I.T. bag model after taking proper account of flavour symmetry violations in the single-gluon-exchange magnetic contribution. Mixing induced by the flavour dependence of the colour-magnetic interaction strengths raises some degeneracies and inverts a few levels but does not otherwise greatly affect the masses. However, the mixing does in a few cases result in very substantial changes in the eigenfunctions. These effects are surveyed and the masses and dissociation couplings for the most important states are examined using the P-matrix formalism.

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