Multiscale Technicolor and the Zbb-bar Vertex
High Energy Physics - Phenomenology
2008-11-26 v1
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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Cite
@article{arxiv.hep-ph/9509412,
title = {Multiscale Technicolor and the Zbb-bar Vertex},
author = {Chong-Xing Yue and Yu-Ping Kuang and Gong-Ru Lu},
journal= {arXiv preprint arXiv:hep-ph/9509412},
year = {2008}
}
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