THE VERTEX CORRECTIONS IN TECHNICOLOR MODEL WITHOUT EXACT CUSTODIAL SYMMETRY

We discuss the effects of isospin breaking which appear in the vertex corrections for , Zτ⁺τ⁻ and Wντ in a one-family technicolor model without exact custodial symmetry. By means of the effective Lagrangian approach we compute the vertex corrections for , Zττ and Wτν. When the isospin symmetry in technilepton sector is not exact and there are a few lighter technivector mesons that are composed by technileptons, the technivector mesons contribute to the vertex corrections. It would be the evidence of the isospin breaking when the difference of the vertex corrections between Zττ and Wτν is measured.