Multiscale Technicolor and the Zbb-bar Vertex

Details Multiscale Technicolor and the Zbb-bar Vertex Multiscale Technicolor and the Zbb-bar Vertex

1995-09-28

arxiv.org/abs/hep-ph/9509412v1

J.Phys.G23:163-168,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

9-page LaTex file

Scientific paper

10.1088/0954-3899/23/2/004

We estimate the correction to the Zbb-bar vertex arising from the exchanges of the sideways extended technicolor (ETC) boson and the flavor-diagonal ETC boson in the multiscale walking technicolor model. The obtained result is too large to explain the present data. However, if we introduce a new self- interaction for the top quark to induce the top quark condensate serving as the origin of the large top quark mass, the corrected R_b=Gamma_b/Gamma_h can be consistent with the recent LEP data. The corresponding correction to R_c=Gamma_c/Gamma_h is shown to be negligibly small.

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