Study of double charmonium production in e^+ e^- annihilation at \sqrt{s} ~ 10.6 GeV

Abstract

We present a new analysis of double charmonium production in e^+ e^- annihilation. The observation of the processes e^+ e^- -> J/psi eta_c, J/psi chi_c0, and J/psi eta_c(2S) is confirmed using a dataset more than three times larger than that of Belle's previous report, and no evidence for the process e^+ e^- -> J/psi J/psi is found. We perform an angular analysis for J/psi eta_c production and set an upper limit on the production of J/psi J/psi. Processes of the type e^+ e^- -> psi(2S) (cc)_res have been observed for the first time; their rates are found to be comparable to those of e^+ e^- -> J/psi (cc)_res processes.

11 pages, 4 figures

References in corpus (2)

• e^+ e^- Annihilation into J/psi + J/psi
• Hunting for glueballs in electron-positron annihilation

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