Quark and lepton flavor triality

Motivated by the success of A₄ in explaining neutrino tribimaximal mixing, and its approximate residual Z₃ symmetry in the quark and charged-lepton sectors, the notion of flavor triality is proposed. Under this hypothesis, certain processes such as τ⁺→μ⁺μ⁺e^- and τ⁺→e⁺e⁺μ^- are favored, but τ⁺→μ⁺e⁺e^- and μ⁺→e⁺e⁺e^- are disfavored. Similarly, B⁰→τ⁺e^- is favored, but B⁰→τ^-e⁺ is disfavored.