A possible explanation of a broad 1⁻⁻ resonant structure around 1.5GeV
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✦ hep-ph
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aroundbroadresonantstructurebesiicompositionexplanationinterpreted
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The broad $1^{--}$ resonant structure around 1.5GeV observed in the $K^+ K^-$ mass spectrum in $J/\psi\to K^+ K^-\pi^0$ by BESII is interpreted as a composition of $\rho(1450)$ and $\rho(1700)$. Various tests are investigated.
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