New Results on Double Charmonium Production in e+e- Annihilation at $\sqrt{s} \approx 10.6~{\rm GeV}$ with the Belle Detector
2005 ◽
Vol 20
(16)
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pp. 3617-3620
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Data Set
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Extending a previous analysis1 the double charmonium production [Formula: see text] and [Formula: see text] has been investigated with a data set of 155 fb-1 with the Belle detector. Theoretical predictions for the cross section are one order of magnitude lower than the measured value and this discrepancy is still not understood. In a very recent update with a dataset of 285 fb-1 strong evidence for a new charmonium state at a mass of 3.940 GeV was found.
2009 ◽
Vol 24
(02n03)
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pp. 450-453
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1997 ◽
Vol 12
(22)
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pp. 3985-3994
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2011 ◽
Vol 26
(03n04)
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pp. 576-578
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1973 ◽
Vol 333
(1595)
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pp. 419-434
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