Abstract
We construct a renormalizable model of weak interactions based on the gauge group SU(2) L × SU(2) R × U(1) and incorporating a natural suppression of all flavor-changing neutral currents. We resolve the dilemma between the observations of the “high- y anormaly” and of parity-violating neutral currents in neutrino physics. Parity violation in atomic physics is predicted to be smaller than in the standard gauge model. The decay μ → ey need not be absolutely forbidden. The theory requires two charged and two neutral intermediate vector bosons with masses between 50 and 200 GeV; and at least six quark flavors, three charged leptons, and three massive neutral leptons.
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