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.
ASJC Scopus subject areas
- Physics and Astronomy(all)