Using D + mesons exclusively reconstructed in the DELPHI detector at LEP, an excess of 66 14 stat. events is observed in the D + + , nal state with a mass of 2637 2 stat. 6 syst. MeV c 2 and a full width smaller than 15 MeV c 2 95 C.L. . This signal is compatible with the expected decay o f a radially excited D 0 J P = 1 , meson.
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