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Corrections to the Wt¯b coupling in the top-color-assisted multiscale technicolor model

Chong-Xing Yue

Yu-Ping Kuang

Gong-Ru Lu

  • CCAST (World Laboratory), P.O. Box 8730, Beijing 100 080, People’s Republic of China
  • Physics Department, Henan Normal University, Xin Xiang, Henan 453 002, People’s Republic of China

  • CCAST (World Laboratory), P.O. Box 8730, Beijing 100 080, People’s Republic of China
  • Institute of Modern Physics, Tsinghua University, Beijing, 100 084, People’s Republic of China

  • CCAST (World Laboratory), P.O. Box 8730, Beijing 100 080, People’s Republic of China
  • Physics Department, Henan Normal University, Xin Xiang, Henan 453 002, People’s Republic of China

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Phys. Rev. D 56, 291 – Published 1 July, 1997

DOI: https://doi.org/10.1103/PhysRevD.56.291

Abstract

We consider the contributions of new gauge bosons to Wt¯b coupling in the top-color-assisted multiscale technicolor model. We find that the exchange of the diagonal extended technicolor (ETC) gauge boson has no contribution to Wt¯b coupling. Using the CERN LEP value of Rb, we calculate the corrections to the CKM matrix element Vtb which arise from the sideways ETC gauge boson and coloron exchange. We find that the δVtb is significantly large for a certain range of the parameters which might be detected in the Fermilab Tevatron collider’s run 3.

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Phys. Rev. D 56, 291– Published 1 July, 1997
  • Received 4 December 1996

© 1997 American Physical Society

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