Extended Technicolor Contribution to the Zbb Vertex

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概要

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• The deviation of the experimental value of R_b ≡ Γ_b/Γ_h from the standard-model prediction can be naturally explained in the extended technicolor scenario. The diagonal extended technicolor gauge boson which flavor-diagonally couples with both the ordinary fermions and the techni-fermions plays an important role in order to have the appropriate radiative correction to the Zbb vertex. But since the diagonal extended technicolor gauge boson gives too large positive contribution to the T parameter, we need some new mechanisms which generate negative contribution to the T parameter.

• 理論物理学刊行会の論文
• 1996-09-25

著者

• KITAZAWA Noriaki

  Department of Physics, Tokyo Metropolitan University

• Kitazawa N

  Tokyo Metropolitan Univ. Hachioji Jpn

• Kitazawa Noriaki

  Department Of Physics Tokyo Metropolitan University

関連論文

• Fermionic Zeromodes in Heterotic Fivebrane Backgrounds(Particles and Fields)
• Extended Technicolor Contribution to the Zbb Vertex

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