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Unified gauge theories with right-handed currents and heavy fermions

Rabindra N. Mohapatra

  • Department of Physics, City College of the City University of New York, New York, New York 10031

Phys. Rev. D 13, 113 – Published 1 January, 1976

DOI: https://doi.org/10.1103/PhysRevD.13.113

Abstract

Gauge models with heavy fermions and right-handed currents are discussed based on the gauge groups SU(2)A×U(1)×SU(4),SU(2)A×SU(2)B×SU(4), and SU(4) × SU(4) and are constructed so as to lead to the ΔI=12 rule. SU(4) × SU(4) is advocated as the ultimate unifying gauge group of nature, and it is shown how at various stages of spontaneous breakdown both the SU(2)A×SU(2)B×SU(4) and SU(2)A×U(1)×SU(4) groups manifest themselves. We also show that CP violation takes an interesting complexion in these models and leads to exactly the relations η+η00 in KL2π decays. Furthermore, we show that the magnitude of CP violation is related to gauge interactions that violate the heavy quark degeneracy.

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