Measurements of the braching fractions for psi(3770)--> D0D0-bar,D+D-,DD-bar$ and the resonance parameters of psi(3770) and psi(2S)

Abstract

We report measurements of the branching fractions for $\psi (3770)\to D^0{\bar{D}}^0,D^{+}{D}^{-},D\bar{D}$ and resonance parameters of $\psi (3770)$ and $\psi (2S)$. By analyzing the line-shapes of the cross sections for inclusive hadron, $D^0{\bar{D}}^0$ and $D^{+}{D}^{-}$ event production in the range from 3.660 GeV to 3.872 GeV covering both $\psi (2S)$ and $\psi (3770)$ resonances, we extract the branching fractions for $\psi (3770)$ decay into $D^0{\bar{D}}^0\mathrm{and}{D}^{+}{D}^{-}$ respectively to be $B(\psi (3770)\to D^0{\bar{D}}^0)=(46.7\pm 4.7\pm 2.3)$ and $B(\psi (3770)\to D^{+}{D}^{-})=(36.9\pm 3.7\pm 2.8)$, which give $B(\psi (3770)\to D\bar{D})=(83.6\pm 7.3\pm 4.2)$ and non-$D\bar{D}$ branching fraction of $\psi (3770)$ to be $B(\psi (3770)\to non-D\bar{D})=(16.4\pm 7.3\pm 4.2)$. We meanwhile obtain the resonance parameters of $\psi (3770)$ and $\psi (2S)$ to be $M_{\psi (3770)}=3772.2\pm 0.7\pm 0.3$ MeV, ${\Gamma }_{\psi (3770)}^{\mathrm{tot}}=26.9\pm 2.4\pm 0.3$ MeV and ${\Gamma }_{\psi (3770)}^{ee}=251\pm 26\pm 11$ eV; $M_{\psi (2S)}=3685.5\pm 0.0\pm 0.3$ MeV, ${\Gamma }_{\psi (2S)}^{\mathrm{tot}}=331\pm 58\pm 2$ keV and ${\Gamma }_{\psi (2S)}^{ee}=2.330\pm 0.036\pm 0.110$ keV; as well as the $R$ value for the light hadron production directly through one photon annihilation to be $R_{uds}=2.262\pm 0.054\pm 0.109$ in this energy region.

7 pages, 4 figures

References in corpus (2)

• Measurements of the cross sections for $e^{+}{e}^{-}\to \mathrm{hadrons}$ at 3.650, 3.6648, 3.773 GeV and the branching fraction for $\psi (3770)\to \mathrm{non}-D\bar{D}$
• A Monte Carlo Generator for Full Simulation of e+e- to hadrons Cross section Scan Experiment

Cited by in corpus (15)

• Charmonium
• Quarkonia and their transitions
• The puzzle of excessive non-$D\bar{D}$ component of the inclusive $\psi (3770)$ decay and the long-distant contribution
• Towards a dynamical understanding of the non-$D\bar{D}$ decay of $\psi (3770)$
• The radiative decay of $\psi (3770)$ into the predicted scalar state X(3700)
• Measurements of the continuum $R_{\mathrm{uds}}$ and $R$ values in $e^{+}{e}^{-}$ annihilation in the energy region between 3.650 and 3.872 GeV
• Hadron Spectroscopy: Theory and Experiment
• QCD prediction for the non-$D\bar{D}$ annihilation decay of $\psi (3770)$
• Precison Measurements of the Mass, the Widths of $\psi (3770)$ Resonance and the Cross Section $\sigma [e^{+}{e}^{-}\to \psi (3770)]$ at $E_{\mathrm{cm}}=3.7724$ GeV
• Heavy Quark Spectroscopy -- Theory Overview
• Precision measurements of the total and partial widths of the psi(2S) charmonium meson with a new complementary-scan technique in antiproton-proton annihilations
• Direct measurement of the absolute branching fraction for $D^{+}\to {\bar{K}}^0{\mu }^{+}{\nu }_{\mu }$ and determination of $\Gamma (D^0\to K^{-}{\mu }^{+}{\nu }_{\mu })/\Gamma (D^{+}\to {\bar{K}}^0{\mu }^{+}{\nu }_{\mu })$
• Structure-dependent radiative corrections to phi -> K^+K^-/K_LK_S decays
• Direct Measurements of Absolute Branching Fractions for D0 and D+ Inclusive Semimuonic Decays
• Measurements of branching fractions for inclusive K0~/K0 and K*(892)+- decays of neutral and charged D mesons