ARE QUARKS AND LEPTONS RELATED BY C-SYMMETRY, P-SYMMETRY AND T-SYMMETRY

Abstract

It is possible that the similarities between the quarks and leptons arise from the spontaneous breaking of an exact quark-lepton Z2 discrete symmetry. We study the connection between this type of discrete symmetry and the discrete symmetries of charge conjugation, parity and time reversal: C, P and T.