Observation of eta_c^' Production in gamma-gamma Fusion at CLEO
classification
✦ hep-ex
keywords
cleodatafusiongammaobservationanalyzedbeencharmonium
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We report on the observation of the eta_c^' (2 ^1S_0), the radial excitation of eta_c (1 ^1S_0) ground state of charmonium, in the two-photon fusion reaction gamma gamma to eta_c^' to K_S^0 K^{\pm} pi^{\mp} in 13.4 fb^{-1} of CLEO II/II.V data and 9.2 fb^{-1} of CLEO III data. The data have been analyzed to extract the eta_c^' resonance parameters.
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