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A Heavy Top Quark and the Zbbar{b} Vertex in Non-Commuting Extended Technicolor
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A Heavy Top Quark and the Zbbar{b} Vertex in Non-Commuting Extended Technicolor
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We explore corrections to electroweak parameters in the context of Extended Technicolor (ETC) models in which the ETC gauge-boson which generates the top-quark mass carries weak $SU(2)$ charge. For $m_t \sim 150$ GeV there exist potentially large corrections to the $Z$ decay width to $b$-quarks. Interestingly, in contrast to the situation in ETC models where the gauge-boson which generates the top-quark mass is a weak $SU(2)$ singlet, the corrections may {\it increase} the $Z \to b \bar{b}$ branching ratio.
Forward citations
Cited by 2 Pith papers
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