ar X iv : h ep - p h / 01 11 29 7 v 1 2 3 N ov 2 00 1 The process e + e − → t̄c in topcolor - assisted technicolor models
نویسندگان
چکیده
We consider the flavor changing neutral current(FCNC) process e+e− → t̄c(or tc̄) in the context of topcolor-assisted technicolor(TC2) models. We find that the contributions of charged scalars (technipions and top-pions) and topcolor gauge bosons are negligibly small. The neutral scalars (top-pion π0 t and top-Higgs h 0 t ) can give significant contributions to this process. With reasonable values of the parameters in TC2 models, there will be several tens of the observable t̄c events to be generated in the future e+e− linear colliders. PACS number(s): 14.65.Ha; 14.80.Cp This work is supported by the National Natural Science Foundation of China(I9905004), the Excellent Youth Foundation of Henan Scientific Committee(9911), and Foundation of Henan Educational Committee. E-mail:[email protected]
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