Observation of a chi_{c2}' candidate in gamma gamma-->D Dbar production in Belle

Details Observation of a chi_{c2}' candidate in gamma gamma-->D Dbar production in Belle Observation of a chi_{c2}' candidate in gamma gamma-->D Dbar production in Belle

2005-07-08

arxiv.org/abs/hep-ex/0507033v1

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 5 figures, submitted to QCD2005 in Montpellier, France, PIC2005 in Prague, Czech Republic and the HEP2005 Internation

Scientific paper

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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