Comment on "e+ e- annhilation into J/psi J/psi"
Belle Collaboration: K.Abe, et al
TL;DR
This paper confirms the observation of e+ e- -> J/psi eta_c production and finds no evidence for e+ e- -> J/psi J/psi, addressing discrepancies between previous experimental results and theoretical models.
Contribution
It provides experimental confirmation of one process and refutes the other, clarifying the nature of e+ e- annihilation into charmonium states.
Findings
Confirmed e+ e- -> J/psi eta_c production
No evidence found for e+ e- -> J/psi J/psi
Addresses previous experimental-theoretical discrepancies
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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Taxonomy
TopicsAlgorithms and Data Compression · Computational Physics and Python Applications · Mathematics, Computing, and Information Processing