Weak Rule and the Dynamical Higgs Mechanism

Abstract

We show that the weak ΔI=12 rule, mW2mZ2=cos2θ, in an SUL(2)⊗U(1) gauge model can be obtained from a dynamical Higgs mechanism. This is independent of weak isospin breaking in the fermion mass spectrum. A consequence of this mechanism is a sum rule which implies the existence of heavy quarks or leptons with ultraviolet masses comparable to the W and Z weak boson masses, ∼30-100 GeV.

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