The rare top quark decays $t\to cV$ in the topcolor-assisted technicolor model

Details The rare top quark decays $t\to cV$ in the topcolor-assisted technicolor model The rare top quark decays $t\to cV$ in the topcolor-assisted technicolor model

2003-03-14

arxiv.org/abs/hep-ph/0303122v1

Phys.Rev. D68 (2003) 015002

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 4 figures

Scientific paper

10.1103/PhysRevD.68.015002

We consider the rare top quark decays in the framework of topcolor-assisted technicolor (TC2) model. We find that the contributions of top-pions and top-Higgs predicted by the TC2 model can enhance the SM branching ratios by as much as 6-9 orders of magnitude. i.e., in the most case, the orders of magnitude of branching ratios are $Br(t\to c g)\sim 10^{-5}$, $Br(t\to c Z)\sim 10^{-5}$, $Br(t\to c \gamma)\sim 10^{-7}$. With the reasonable values of the parameters in TC2 model, such rare top quark decays may be testable in the future experiments. So, rare top quark decays provide us a unique way to test TC2 model.

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