Eur. Phys. J. C (2008) 53: 281-287
https://doi.org/10.1140/epjc/s10052-007-0447-8

Regular Article - Theoretical Physics

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

¹ Henan Institute of Science and Technology, Xinxiang, 453003, P.R. China
² College of Physics and Information Engineering, Henan Normal University, Xinxiang, 453007, P.R. China

^* e-mail: hnxxlyb2000@sina.com

Received: 30 June 2007
Revised: 4 September 2007
Published online: 10 November 2007

Abstract

The top-pions (Π_t ^0,±) and the top-Higgs (h_t ⁰) 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^-Π_t ⁺Π_t ^-, e^-γ→ν_eΠ_t ^-Π_t ⁰ and e^-γ→ν_eΠ_t ^-h_t ⁰. 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 Π_t ^-→bc̄, Π_t ⁰(h_t ⁰)→tc̄ can provide us with the typical signal to detect these new particles.