Abstract
Using the CLEO detector at the Cornell Electron Storage Ring, we have searched for two-photon production of charmonium in four-track final states. We have measured Γγγ(ηc)=5.9+2.1-1.8±1.9 keV, and we have obtained 95% CL upper limits of Γγγ(Xc0)<6.2 keV and Γγγ(Xc2)<1.0 keV.
Original language | English (US) |
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Pages (from-to) | 169-174 |
Number of pages | 6 |
Journal | Physics Letters B |
Volume | 243 |
Issue number | 1-2 |
DOIs | |
State | Published - Jun 21 1990 |