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- W2033255721 abstract "Results are reported based on samples of 58 million $jpsi$ and 14 million $psip$ decays obtained by the BESII experiment. Improved branching fraction measurements are determined, including branching fractions for $jpsitoppp$, $psipra pi^0J$, $etaJ$, $pi^0 pi^0 J/psi$, anything $J/psi$, and $psi(2S)argammachi_{c1},gammachi_{c2}argammagammajpsi$. The decay $J/psi to omega pi ^+pi ^-$ is studied. At low $pi pi$ mass, a large, broad peak due to the $sigma$ is observed, and its pole position is determined. Results are presented on $psi(2S)$ and $J/psi$ hadronic decays to $K^0_SpK^-bar n$ and $K^0_Sbar p K^+n$ final states. No significant $Theta(1540)$ signal, the pentaquark candidate, is observed, and upper limits are set. An enhancement near the $m_p + M_{Lambda}$ mass threshold is observed in the $pbar{Lambda}$ invariant mass spectrum from $J/psi to p K^- bar{Lambda} + c.c.$ decays. It can be fit with an S-wave Breit-Wigner resonance with a mass $m=2075pm 12 (stat) pm 5 (syst)$ MeV and a width of $Gamma =90 pm 35 (stat) pm 9 (syst)$ MeV." @default.
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- W2033255721 date "2005-01-30" @default.
- W2033255721 modified "2023-10-16" @default.
- W2033255721 title "BES RESULTS ON J/ψ DECAYS AND CHARMONIUM TRANSITIONS" @default.
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- W2033255721 doi "https://doi.org/10.1142/s0217751x05021610" @default.
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