The recently introduced concept of algebraically composite particles (defined by means of Clifford algebras) gave, in the case of fermions, an algebraic explanation of the phenomenon of three replicas of leptons and quarks (as, e.g., ${\mathit{e}}^{\mathrm{-}}$,${\mathrm{\mu }}^{\mathrm{-}}$,${\mathrm{\tau }}^{\mathrm{-}}$). Now, in the case of bosons, it suggests that a Higgs scalar and a Higgs pseudoscalar, both in two replicas, are to be considered. More generally, color-singlet and color-triplet Yukawa bosons with spin-parity $0^{\pm }$ and $1^{\pm }$, and electric charges (0,-1) and (2/3,- 1) / 3 ) can be expected to exist, all in two replicas.

• Received 10 June 1992

DOI:https://doi.org/10.1103/PhysRevD.46.5188