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arXiv · hep-ph/9509412

Multiscale Technicolor and the Zbb-bar Vertex

Chong-Xing Yue·Yu-Ping Kuang·Gong-Ru Lu
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Abstract

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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Chong-Xing Yue, Yu-Ping Kuang, Gong-Ru Lu. 1995-09-28. Multiscale Technicolor and the Zbb-bar Vertex. https://doi.org/10.1088/0954-3899%2F23%2F2%2F004

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