Top quark associated production of the neutral top pion at high energy e+e- colliders -: art. no. 095010

In the context of top-color-assisted technicolor (TC2) models, we calculate the associated production of the neutral top pion pi(t)(0) with a pair of top quarks via the process e(+)e(-)-->t (t) over bar pi(t)(0). We find that the production cross section is larger than that of the process e(+)e(-)-->t (t) over barH both in the standard model (SM) and in the minimal supersymmetric SM. With reasonable values of the parameters in TC2 models, the cross section can reach 20 fb. The neutral top pion pi(t)(0) may be directly observed via this process.