Production and decay of the neutral top pion in high energy e+e- colliders -: art. no. 115002

We study the production and decay of the neutral top pion pi (0)(t) predicted by top-color-assisted technicolor (TC2) theory. Our results show that, except the dominant decay modes b (b) over bar, (t) over barc, and gg, the pi (0)(t) can also decay into gamma gamma and Z gamma modes. It can be significantly produced at high energy e(+)e(-) collider (LC) experiments via the processes e(+)e(-)--> pi (0)(t)gamma and e(+)e(-)--> Z pi (0)(t). We further calculate the production cross sections of the processes e(+)e(-)--> gamma pi (0)(t) --> gamma(t) over barc and e(+)e(-)-->Z pi (0)(t)-->Z (t) over barc. We find that the signatures of the neutral top pion pi (0)(t) can be detected via these processes.