Charmonium Production in $e^+e^-$ Annihilation at $\sqrt{s}=10.6GeV$

We review the charmonium production in $e^{+} e^{-}$ annihilation at $\sqrt{s} = 10.6 G e V$ . NRQCD predictions for the $J / ψ$ production are compared with the recent measurements by BaBar and Belle. A NRQCD calculation for the $D$ -wave charmonium production is reported to further test the color-octet mechanism and detect the $J^{P C} = 2^{- -}$ state. The issue of double $c \overset{ˉ}{c}$ production in $e^{+} e^{-}$ annihilation observed by Belle is also discussed.

Charmonium Production in $e^{+} e^{-}$ Annihilation at $\sqrt{s} = 10.6 G e V$

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Charmonium Production in $e^{+} e^{-}$ Annihilation at $\sqrt{s} = 10.6 G e V$

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Charmonium Production in e+e−e+e− Annihilation at s=10.6GeVs​=10.6GeV

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Charmonium Production in e+e−e+e− Annihilation at s=10.6GeVs​=10.6GeV

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Charmonium Production in $e^{+} e^{-}$ Annihilation at $\sqrt{s} = 10.6 G e V$

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Charmonium Production in $e^{+} e^{-}$ Annihilation at $\sqrt{s} = 10.6 G e V$

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