With a view to avoiding some of the kinematical and dynamical difficulties involved in the single-triplet quark model, a model for the low-lying baryons and mesons based on three triplets with integral charges is proposed, somewhat similar to the two-triplet model introduced earlier by one of us (Y. N.). It is shown that in a scheme of triplets with integral charges, one is naturally led to three triplets located symmetrically about the origin of diagram under the constraint that the Nishijima-Gell-Mann relation remains intact. A double symmetry scheme is proposed in which the large mass splittings between different representations are ascribed to one of the , while the other is the usual one for the mass splittings within a representation of the first .
- Received 12 April 1965
- Published in the issue dated August 1965
© 1965 The American Physical Society