The forgotten 1D2 level of charmonium |
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Authors: | H Harari |
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Institution: | CERN, Geneva, Switzerland |
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Abstract: | The standard “charmonium” picture predicts four C=+1 states (3P0, 3P1, 3P2, 2 1S0) between ψ and ψ′. If these are identified with the four experimentally observed levels, serious difficulties arise. We remark that a ,,forgotten” 1D2 level (JPC=2?) is likely to be around 3.5 GeV. It may be identified with χ(2.45) or χ(3.50), avoiding the above above difficulties. The 2 1S0 level has then yet to be discovered. |
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