In the framework of the topcolor-assisted multiscale technicolor(TOPCMTC)models,we discuss the s-channel resonance production of the lightest neutral technipion P 0 at the First Muon Collider(FMC).

The Measurement of energetic photon produced in intermediate energy and relativistic energy heavy ion collisions provides opportunities for investigating many interesting and sophisticated problems such as properties of nuclear matter under extreme condition, bremsstrahlung, neutral meson production both below and above the production threshold in free nucleonnucleon collision.