The Vertex Corrections in Technicolor Model without Exact Custodial Symmetry

Details The Vertex Corrections in Technicolor Model without Exact Custodial Symmetry The Vertex Corrections in Technicolor Model without Exact Custodial Symmetry

1994-11-12

arxiv.org/abs/hep-ph/9411280v1

Mod.Phys.Lett. A10 (1995) 1601-1612

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, Latex, uses epic.sty, 4 figyres appended as a compressed uuencoded postscript file

Scientific paper

We discuss the effects of isospin breaking which appear in the vertex corrections for $Zb \bar{b}$, $Z\tau^+\tau^-$ and $W\nu\tau$ in a one-family technicolor model without exact custodial symmetry. By means of the effective lagrangian approach we compute the vertex corrections for $Zb\bar{b}$, $Z\tau\tau$ and $W\tau\nu$ taking account of the contributions from technivectormesons. If the isospin symmetry in technilepton sector is not exact, technivectormesons contribute to the vertex correction for $Z\tau\tau$ but such contributions to the correction for $W\tau\nu$ are absent. If the difference is measured, it is the evidence of the isospin breaking.

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