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Zhang","submitted_at":"2022-10-30T07:39:47Z","abstract_excerpt":"The processes $ e^+e^-\\rightarrow \\Sigma^0\\overline{\\Sigma}{}^0 $ and $ e^+e^-\\rightarrow\\Sigma^+\\overline{\\Sigma}{}^-$ are studied using initial-state-radiation events in a sample of 980 $\\,\\mbox{fb}^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $ e^+e^- $ collider. The cross sections from the mass threshold to $ 3{\\mathrm{\\,Ge\\kern -0.1em V\\!/}c^2} $ and the effective form factors of $ \\Sigma^0 $ and $ \\Sigma^+ $ are measured. 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