Abstract
We observe a resonancelike structure in the total cross section for hadron production by e+e− colliding beams at a mass of 4414 ± 7 MeV having a total width Γ=33±10 MeV. From the area under this resonance, we deduce the partial width to electron pairs to be Γee=440±140 eV. Further structure of comparable width is present near 4.1 GeV.Received 24 February 1976DOI:https://doi.org/10.1103/PhysRevLett.36.700©1976 American Physical Society
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