The production of t⁺t^- quark pair through e⁺e^- collider at ILC

In this paper we discussed the production of quark pair through the work of collider by means of the International Linear Collider (ILC). A new method the mixed chain propagator correction was used to calculate the cross section of e⁺e^-→t⁺t^-. Firstly we promoted the Dyson chain propagator theory of QED to the electroweak unification standard model and acquired the mixing chain propagators of photon and intermediate gauge boson in standard model. Then we calculated the total cross section of e⁺e^-→t⁺t^- by the mixed chain propagator correction and compared it with the total cross sections by one loop correction σ^loop and tree level σ⁰. The numerical results showed that the corrections of σ^chain to σ^loop and σ”0 are large. In addition, combined with the linear collider brightness we also discussed the number of t⁺t^- pairs that can be produced each year at ILC. (authors)