Abstract
The fermion masses were studied in the broken phase of the chiral SU(2) L ⊗ SU(2) R model with dynamical fermions. In our work we follow the proposal by Smit and Swift adding a manifestly chiral gauge invariant Wilson-Yukawa term with strength ω to the action of this model in the hope of rendering the unwanted doubler fermions heavy dynamically. In the case of naive fermions ( ω = 0) a strong and weak coupling region were established in the broken phase. The scaling behaviour of the fermion masses and the lines of constant fermion mass were investigated close to the quadruple point A in the broken phase. We show that for large ω doublers can be easily decoupled in the strong coupling region of the broken phase while the physical fermion mass and the electroweak scale can be made arbitrarily small.
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