Ling-De Wan

Rare top quark decays t → cV in the top-color-assisted technicolor model

We consider the rare top quark decays in the framework of the top-color-assisted technicolor (TC2) model. We find that the contributions of top-pions and top-Higgs-bosons predicted by the TC2 model can enhance the SM branching ratios by as much as 6\char21{}9 orders of magnitude; i.e., in the extreme case, the orders of magnitude of branching ratios are

Production of the neutral top pion at the e gamma colliders

Br(\stackrel{\ensuremath{\rightarrow}}{t}cg)\ensuremath{\sim}{10}^{\ensuremath{-}5},

e^+ e^- \to \bar{t}c

Br(\stackrel{\ensuremath{\rightarrow}}{t}cZ)\ensuremath{\sim}{10}^{\ensuremath{-}5},

The rare top quark decays

Br(\stackrel{\ensuremath{\rightarrow}}{t}c\ensuremath{\gamma})\ensuremath{\sim}{10}^{\ensuremath{-}7}.

t\to cV

With reasonable values of the parameters in the TC2 model, such rare top quark decays may be testable in future experiments. Therefore, rare top quark decays provide a unique way to test the TC2 model.

in the topcolor-assisted technicolor model

In the framework of topcolor-assisted technicolor(TC2) model, we study a neutral toppion production process

THE DISCUSSION OF ELECTROWEAK PARAMETERS IN TECHNICOLOR MODELS WITH A SCALAR DOUBLET

e^{-}\gamma\to e^{-}\Pi^{0}_{t}

Implications of the top quark mass measurement for the SM Higgs boson mass MH

in this paper. Our results show that the production cross section of