Following the recent observation that within SU(4) of color unifying quarks with leptons there exists a simple mechanism which emphasizes the $\Delta \mathrm{}(B-L)=-2\mathrm{}$ decays of a nucleon into a single lepton + mesons, it is noted that a variant of the same mechanism leads to decays of the nucleon into lepton + lepton + antilepton + mesons without any suppression in the amplitude. For an economical choice of the scalar system, nucleon decays into $\mathrm{ll}\overline{l}$ + mesons will, in fact, dominate over those into a single lepton + mesons.

• Received 8 November 1983

DOI:https://doi.org/10.1103/PhysRevD.29.1549