Constraining on dynamical electroweak symmetry breaking via R_b
High Energy Physics - Phenomenology
2012-11-22 v3
Abstract
New strong gauge interactions remain a viable source for the electroweak symmetry breaking. However, addressing the generation of fermion masses remains a challenge. A basic observable which provides stringent constraints on the flavor extensions of Technicolor-type models is the decay rate of the Z boson into a bbbar-pair. In this paper we provide a general framework to evaluate the resulting constraints on the technicolor theory level taking into account the contributions from the vector and axial vector mesons and discuss the consequences for phenomenology.
Cite
@article{arxiv.1112.0963,
title = {Constraining on dynamical electroweak symmetry breaking via R_b},
author = {Hidenori S. Fukano and Kimmo Tuominen},
journal= {arXiv preprint arXiv:1112.0963},
year = {2012}
}
Comments
16pages,14 figures; v2:Numerical analysis and results have been revised