Observation of a chi_(c2)' candidate in gamma gamma-->D Dbar production in Belle
classification
✦ hep-ex
keywords
gammaproductionstatecandidatecharmoniumdbargamma--angular
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We report on a search for the production of new resonance states in the process gamma gamma-->D Dbar. A candidate C-even charmonium state is observed in the vicinity of 3.93 GeV/c^2. The production rate and the angular distribution in the gamma gamma center-of-mass frame suggest that this state is the previously unobserved chi_{c2}', the 2 ^3P_2 charmonium state.
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