The hierarchy of baryon generation by multiple species of both gauge and Higgs bosons whose interactions do not conserve baryon number are considered. A procedure for computing the final baryon asymmetry in terms of the masses and coupling strengths of all the various species is presented. If the lightest gauge boson has a mass below ${10}^{15}$ GeV, then the final asymmetry depends only upon this boson and any lighter Higgs bosons.

• Received 2 June 1980

DOI:https://doi.org/10.1103/PhysRevLett.45.2074