Signatures of the neutral top-pion in $eγ$ collisions

Abstract

We calculate the contributions of the neutral top-pion $π_{t}^0$ to the process $e^-γ\to e^-\bar{t}c$ in the framework of topcolor-assisted technicolor(TC2) models and discuss the possible of detecting $π_t^0$ at the high energy linear $e^+e^-$ collider(LC). Our results show that $π_t^0$ can give significant contributions to this process. With reasonable values of the parameters in TC2 models, the cross section $σ$ can reach 0.19 fb which may be detected at the $eγ$ collisions based on the future LC experiments.

latex files,11 pages, 3 figures