Study of the branching ratio of $\psi (3770)\to D\bar{D}$ in $e^{+}{e}^{-}\to D\bar{D}$ scattering

Abstract

Based on the data of BES and Belle, the production of $D\bar{D}$ in the $e^{+}{e}^{-}\to D\bar{D}$ scattering process is studied in this paper. We analyze the continuum and resonant contributions in the energy region from 3.7 to 4.4 GeV. In the ${\chi }^2$ fit to data, we obtain the resonance parameters of $\psi (3770)$, the branching ratio of $\psi (3770)\to D\bar{D}$ decay by confronting the data to the theoretical formula where both the contributions of the resonances, continuum and interference effects are included. We obtain the branching ratio of $\psi (3770)\to D\bar{D}$ decay is $97.2$, as well as the branching ratio of $\psi (4040)$, $\psi (4160)\to D\bar{D}$ decays.

6 pages, 1 figure, 1 table, version to appear in Phys. Rev. D Rapid communications

References in corpus (5)

• Measurement of the near-threshold $e^{+}{e}^{-}\to D\bar{D}$ cross section using initial-state radiation
• Measurements of the cross sections for $e^{+}{e}^{-}\to \mathrm{hadrons}$ at 3.650, 3.6648, 3.773 GeV and the branching fraction for $\psi (3770)\to \mathrm{non}-D\bar{D}$
• Measurements of the braching fractions for psi(3770)--> D0D0-bar,D+D-,DD-bar$ and the resonance parameters of psi(3770) and psi(2S)
• QCD prediction for the non-$D\bar{D}$ annihilation decay of $\psi (3770)$
• The continuum and interference effect in $e^{+}{e}^{-}\to D^0{\bar{D}}^0,D^{+}{D}^{-}$ processes

Cited by in corpus (13)

• ${\Lambda }_{c}N$ bound states revisited
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• Measurement of ψ(3770) parameters
• Exclusive open-charm near-threshold cross sections in a coupled-channel approach
• $D\bar{D}$ production and their interactions
• Observation of $h_1(1380)$ in the $J/\psi \to {\eta }^{\prime }K\bar{K}\pi$ Decay
• Line-shape and poles of the $\psi (3770)$
• Line shape of ψ(3770) in e^+e^-\to D\bar D
• Study of the anomalous cross-section lineshape of e^+e^-\to D\bar D at ψ(3770) with an effective field theory
• $\bar{p}p$ annihilation into $\bar{D}D$ meson pair within an effective Lagrangian model
• Is $Y(4008)$ possibly a $1^{--}$ $\psi (3^3{S}_1)$ state?
• Electronic width of the $\psi (3770)$ resonance interfering with the background
• The $R_{uds}$ value in the vicinity of $\psi (3770)$ state