Study of the anomalous cross-section lineshape of e^+e^-\to D\bar D at ψ(3770) with an effective field theory

Guo-Ying Chen, Qiang Zhao

We study the anomalous cross-section lineshape of $e^{+}{e}^{-}\to D\bar{D}$ with an effective field theory. Near the threshold, most of the $D\bar{D}$ pairs are from the decay of…