A Model of Composite Quarks and Leptons

ABSTRACT In continuation of our model of composite electron, its companion neutrinos, photon and electro-weak gauge bosons as well as their super-partners based on extended Lorentz group SU(3)⊗SU(3) in (8+1) dimensional space-time, we show that the remaining leptons, quarks, lepto-quarks and gluons as well as their respective super-partners can be considered as composites of fundamental particles belonging to the 5 ⊗ 5 dimensional representation of the further extended Lorentz group SU(5)⊗ SU(5) in (24+1) dimensional space-time. The fundamental particles constituting the composite ones do not posses quantum numbers of the latter such as charge, hypercharge etc. Since according to our estimate based on experimental limit on the electron life-time, the mass of the fundamental particles is in the Planckian regime, the composite particles would break up into their constituents at these energies and lose their quantum numbers.