6533b825fe1ef96bd128339b

RESEARCH PRODUCT

Constraining on dynamical electroweak symmetry breaking via R_b

Hidenori S. FukanoKimmo Tuominen

subject

High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::LatticeHigh Energy Physics::PhenomenologyFOS: Physical sciencesHigh Energy Physics::Experiment

description

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.

http://arxiv.org/abs/1112.0963