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Using a confining, symmetry-preserving regularisation of avector$\times$vector contact interaction, we compute the spectra ofground-state pseudoscalar and vector $(f\bar g)$ mesons, scalar andaxial-vector $(fg)$ diquarks, and $J^P=1/2^+, 3/2^+$ $(fgh)$ baryons, where$f,g,h \in \{u,d,s,c,b\}$. The diquark correlations are essentially dynamicaland play a key role in formulating and solving the three-valence-quark baryonproblems. The baryon spectrum obtained from this largely-algebraic approachreproduces the 22 known experimental masses with an accuracy of $2.9(2.4)$%. Italso possesses the richness of states typical of constituent-quark models,predicting many heavy-quark baryons not yet observed. This study indicates thatdiquark correlations are an important component of all baryons; and owing tothe dynamical character of the diquarks, it is typically the lightest alloweddiquark correlation which defines the most important component of a baryon'sFaddeev amplitude.

Masses of ground-state mesons and baryons, including those with heavy quarks