Observation of a chi'_(c2) candidate in gamma gamma --> D Dbar production at Belle

Details Observation of a chi'_(c2) candidate in gamma gamma --> D Dbar production at Belle Observation of a chi'_(c2) candidate in gamma gamma --> D Dbar production at Belle

2005-12-15

arxiv.org/abs/hep-ex/0512035v2

Phys.Rev.Lett.96:082003,2006

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 4 figures, Published in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.96.082003

We report on a search for new resonant 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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