Pair production of charged top-pions in the $\gamma \gamma$ collisions at the ILC

Abstract

The top-color assisted technicolor (TC2) mode predicts the existence of a pair of charged top-pions ${\pi }_t^{\pm }$. In this paper, we study the production of the charged top-pions pair ${\pi }_t^{\pm }$ at next generation $\gamma \gamma$ colliders. The results show that the production rates can reach the level of $10^2$ fb with reasonable parameter space. With a large number of events and the clean background, the charged top-pion should be observable at the $\gamma \gamma$ colliders. Therefore, our studies can help us to search for charged top-pion, and furthermore, to test the TC2 model.