Additive quark model with six flavours

Under the assumption of the SU(6) internal hadron symmetry, a six quark model with different flavours is proposed. SU(6) multiplets of mesons Jsup(P)=0-,1- and baryons Jsup(P) = 3/2+, 1/2+ are constructed according to the irreducible representations of the SU(6) group. It is natural to assume that this symmetry is broken by quark gravity. This gave us the possibility to derive mass sum rules for these hadrons and make theoretical predictions of masses for the bottom vector mesons. (author)