Abstract
We analyze the problem of charge dequantization in the standard model (SM) with three generations. The extensions of the SM with more than one Higgs doublet and/or at least one right-handed neutrino with a Majorana mass term uniquely fix the fermion electric charge. Nothing but properties of the SM Lagrangian are used here to find the weak hypercharges of particles. The mixed gauge-gravitational anomaly cancellation takes place automatically.
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