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Comment on "e+ e- annhilation into J/psi J/psi"

Belle Collaboration·K. Abe
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Abstract

Using a data sample of 101.8 fb collected by the Belle detector at the KEKB asymmetric energy e+ e- collider, we confirm our published observation of e+ e- -> J/psi eta_c and find no evidence for the process e+ e- -> J/psi J/psi. The latter process was suggested as means to explain the large discrepancy between the published Belle result and theoretical predictions.

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Belle Collaboration, K. Abe. 2003-06-05. Comment on "e+ e- annhilation into J/psi J/psi". https://arxiv.org/abs/hep-ex/0306015

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