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Measurement of χ_cJ--> K+K-K+K-
BES Collaboration, M. AblikimJ
Using 14M psi(2S) events taken with the BES-II detector, chi_cJ-->K+K-K+K- decays are studied. For the four-kaon final state, the branching fractions are B(chi_c0,1,2 -->K+K-K+K-)=…
Search for Invisible Decays of and in and
BES Collaboration
Using a data sample of decays collected with the BES II detector at the BEPC, searches for invisible decays of and in to and $ϕη^\pr…
Observation of a broad 1^-- resonant structure around 1.5 GeV/ in the K^+K^- mass spectrum in J/psi --> K^+K^-pi^0
BES Collaboration, M. Ablikim
A broad peak is observed at low K^+K^- invariant mass in J/psi --> K^+K^-pi^0 decays found in a sample of 5.8\times 10^7 J/psi events collected with the BESII detector. A partial w…
Pseudoscalar production at omega omega threshold in J/psi -> gamma omega omega
Bes Collaboration
The decay channel J/ψ->gamma omega omega, omega -> pi+ pi- pi0 is analyzed using a sample of 5.8x10^7 J/psi events collected with the BESII detector. The omega omega invariant mass…
Search for the Rare Decays J/Psi --> Ds- e+ nu_e, J/Psi --> D- e+ nu_e, and J/Psi --> D0bar e+ e-
BES Collaboration
We report on a search for the decays J/Psi --> Ds- e+ nu_e + c.c., J/Psi --> D- e+ nu_e + c.c., and J/Psi --> D0bar e+ e- + c.c. in a sample of 5.8 * 10^7 J/Psi events collected wi…
Partial wave analyses of J/psi to gamma pi^+ pi^- and gamma pi^0 pi^0
M. Ablikim
Results are presented on J/psi radiative decays to pi^+pi^- and pi^0pi^0 based on a sample of 58M J/psi events taken with the BESII detector. Partial wave analyses are carried out…
Observation of a near-threshold enhancement in the ωϕmass spectrum from the doubly OZI suppressed decay J/ψ\to γωϕ
BES Collaboration
An enhancement near threshold is observed in the ωϕinvariant mass spectrum from the doubly OZI suppressed decays of J/ψ\to γωϕ, based on a sample of 5.8 X 10^7 J/ψevents collected…