Top quark decay t -> cb\bar{b} in topcolor-assisted technicolor models

Details Top quark decay t -> cb\bar{b} in topcolor-assisted technicolor models Top quark decay t -> cb\bar{b} in topcolor-assisted technicolor models

2009-03-16

arxiv.org/abs/0903.2619v1

Chin.Phys.Lett.26:101401,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages and 4 figures

Scientific paper

10.1088/0256-307X/26/10/101401

Topcolor-assisted technicolor (TC2) model predicts the existence of the top-pions and the CP-even top-Higgs with large flavor-changing couplings to the top quark, which at tree-level can mediate the top quark three-body decay t -> cb\bar{b}. In this work we study this decay, showing the dependence of the decay rate on the relevant TC2 parameters and comparing the results with the predictions in the minimal supersymmetric model. We find that the decay rate in the TC2 model is much larger than in the minimal supersymmetric model and, in a large part of the parameter space, the TC2 prediction may reach the detectable level of the LHC.

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