Production of the charged top-pions from TC2 model at the TeV energy e-γ colliders

Abstract

The top-pions (Πt0,±) and the top-Higgs (ht0) are the typical particles predicted by the topcolor-assisted technicolor (TC2) model and the observation of these particles can be regarded as direct evidence of the TC2 model. In this paper, we study three pair production processes of these new particles at the next generation eγ colliders, i.e., e-γ→e-Πt+Πt-, e-γ→νeΠt-Πt0 and e-γ→νeΠt-ht0. The results show that the production rates can reach the level 100–101 fb with reasonable parameter values. So one can expect that enough signals could be produced in future high- energy linear collider experiments. Furthermore, the flavor-changing (FC) decay modes Πt-→bc, Πt0(ht0)→tc can provide us with the typical signal to detect these new particles.