[Yang, Mao-Zhi] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
; [Yang, Mao-Zhi] Inst High Energy Phys, Beijing 100049, Peoples R China
In the e(+)e(-) annihilation processes e(+)e(-) -> D-0(D) over bar (0) D+D- near or above the threshold of D (D) over bar, there are not only the resonance contribution e(+)e(-) -> psi(3770) -> D-0(D) over bar (0), D+ D-, but also the continuum contribution through virtual photon directly e(+)e(-) -> gamma(not asymptotic to) -> D-0,(D) over bar (0,) D+D-. The amplitudes through virtual photon directly and through resonance can interfere seriously. We consider the continuum and interference effect in the D (D) over bar production process in e(+)e(-) annihilation. We find that the effect is significant near and above the threshold of the D (D) over bar mesons.