Evidence of psi(3770) non-DD-bar Decay to J/psi pi+pi-

Abstract

Evidence of $\psi (3770)$ decays to a non-$D\bar{D}$ final state is observed. A total of $11.8\pm 4.8\pm 1.3$ $ψ(3770) \to \PPJP$ events are obtained from a data sample of 27.7 $\mathrm{p}{\mathrm{b}}^{-1}$ taken at center-of-mass energies around 3.773 GeV using the BES-II detector at the BEPC. The branching fraction is determined to be $BF(ψ(3770) \to \PPJP)=(0.34\pm 0.14 \pm 0.09)%$, corresponding to the partial width of $Γ(ψ(3770) \to \PPJP) = (80 \pm 33 \pm 23)$ keV.

8 pages, 7 figures, Submitted to Physics Letters B

References in corpus (4)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• The $\kappa$ resonance in s wave $\pi K$ scatterings
• S-D Mixing and Searching for the psi(1P1) State at the Beijing Electron-Positron Coolider
• Measurement of Cross Sections for $D^0{\bar{D}}^0$ and $D^{+}{D}^{-}$ Production in $e^{+}{e}^{-}$ Annihilation at $\sqrt{s}=3.773$ GeV

Cited by in corpus (47)

• Heavy quarkonium: progress, puzzles, and opportunities
• Observation of a Broad Structure in the ${\pi }^{+}{\pi }^{-}J/\psi$ Mass Spectrum around 4.26 GeV/$c^2$
• Charmonium
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• Gluonic charmonium resonances at BaBar and Belle?
• New states above charm threshold
• Study of the reaction e^{+}e^{-} -->J/psiπ^{+}π^{-} via initial-state radiation at BaBar
• Measurements of the cross sections for $e^{+}{e}^{-}\to \mathrm{hadrons}$ at 3.650, 3.6648, 3.773 GeV and the branching fraction for $\psi (3770)\to \mathrm{non}-D\bar{D}$
• QCD Multipole Expansion and Hadronic Transitions in Heavy Quarkonium Systems
• Observation of psi(3770)--> pi pi J/psi and Measurement of Gamma_{ee}[psi(2S)]
• The puzzle of excessive non-$D\bar{D}$ component of the inclusive $\psi (3770)$ decay and the long-distant contribution
• Decay of the psi(3770) to Light Hadrons
• Towards a dynamical understanding of the non-$D\bar{D}$ decay of $\psi (3770)$
• Observation of psi(3770) --> gamma chi_c0
• Psi'' decays to charmless final states
• 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
• Observation of ${\rm Y}(4S)decaysto$π^+pi^-Υ(1S)$and$π^+pi^-Υ(2S)
• Hadron Spectroscopy: Theory and Experiment
• QCD prediction for the non-$D\bar{D}$ annihilation decay of $\psi (3770)$
• Measurement of the cross section for $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ and evidence of the decay $\psi (3770)\to \Lambda \bar{\Lambda }$
• 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
• Observation of the decay Upsilon(4S) -> Upsilon(1S) pi+ pi-
• Search for Exclusive Multi-Body Non-DbarD Decays at the psi(3770)
• Measurements of the observed cross sections for $e^{+}{e}^{-}\to$ light hadrons at $\sqrt{s}=$ 3.773 and 3.650 GeV
• Heavy Quark Spectroscopy -- Theory Overview
• Measurements of the observed cross sections for exclusive light hadron production in e^+e^- annihilation at \sqrt{s}= 3.773 and 3.650 GeV
• Search for Baryonic Decays of ψ(3770) and ψ(4040)
• Hadronic D and D_s Meson Decays
• Production of hadron pairs in electron-positron annihilation near the K(+)K(-), D-Dbar, B-Bbar and Lambda(c)(+)-Lambda(c)(-) thresholds
• Charm Physics with BES-III at BEPC-II
• Role of the newly measured $B\to KD\bar{D}$ process to establish ${\chi }_{c0}(2P)$ state
• Physics Accomplishments and Future Prospects of the BES Experiments at the BEPC Collider
• Measurement of cross sections for $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}$ at center-of-mass energies from 3.80 to 4.60 GeV
• Experimental studies of the ${\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-}{\pi }^0$, $K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}{\pi }^0$ and $p\bar{p}{\pi }^{+}{\pi }^{-}{\pi }^0$ final states produced in $e^{+}{e}^{-}$ annihilation at $\sqrt{s}=$ 3.773 and 3.650 GeV
• Improved Measurement of Branching Fractions for pipi Transitions among Upsilon(nS)States
• Observation of di-structures in $e^{+}{e}^{-}\to J/\psi \mathrm{X}$ at center-of-mass energies around 3.773 GeV
• $\psi (3770)$ and $B$ meson exclusive decay $B\to \psi (3770)K$ in QCD factorization
• Measurements of the observed cross sections for $e^{+}{e}^{-}\to$ exclusive light hadrons containing ${\pi }^0{\pi }^0$ at $\sqrt{s}=3.773$, 3.650 and 3.6648 GeV
• Measurements of the observed cross sections for e+e -> exclusive light hadrons containing K^S_0 meson at \sqrt{s} = 3.773 and 3.650 GeV
• Measurement of $\mathcal{B}(\psi (3770)\to \gamma {\chi }_{c1})$ and search for $\psi (3770)\to \gamma {\chi }_{c2}$
• First Observation of a Three-Resonance Structure in $e^{+}{e}^{-}\to$Nonopen Charm Hadrons
• $\mathcal{R}(3780)$ Resonance Interpreted as the $1^3{D}_1$-Wave Dominant State of Charmonium from Precise Measurements of the Cross Section of $e^{+}{e}^{-}\to$ Hadrons
• Search for the radiative transitions $\psi (3770)\to \gamma {\eta }_c$ and $\gamma {\eta }_c(2S)$
• CLEO Spectroscopy Results
• Studies of Charmonium at BESIII
• Charmonium Review
• Dissociation cross sections of $\psi (3770)$, $\psi (4040)$, $\psi (4160)$, and $\psi (4415)$ mesons with nucleons