The continuum and interference effect in e+e-→ D⁰D⁰, D+D- processes

الأصل · EN

In the e+e- annihilation processes e+e-→ D⁰D⁰, D+D- near or above the threshold of DD, there are not only the resonance contribution e+e-→ ψ(3770)→ D⁰D⁰, D+D-, but also the continuum contribution through virtual photon directly e+e-→ γ*→ D⁰D⁰, D+D-. The amplitudes through virtual photon directly and through resonance can interfere seriously. We consider the continuum and interference effect in the DD production process in e+e- annihilation. We find that the effect is significant near and above the threshold of the DD mesons.