Form Factor Fit for e^+e^- to pi^+pi^-pi^+pi^-
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✦ hep-ex
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crossfactorformsectionapplybabarbeencollaboration
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The cross section of e^+e^- to pi^+pi^-pi^+pi^- has been measured by BABAR collaboration. We apply the theoretical cross section deduced from the extended VMD (VectorMeson Dominance) model to fit these experimental data. The relevant parameters and the isovector form factor are obtained
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