Observation of e+e− Annihilation into the C=+1 Hadronic Final States ρ0ρ0 and ϕρ0
B. Aubert, R. Barate, M. Bóna, D. Boutigny et autres
We report the first observation of ${e}^{+}{e}^{\ensuremath{-}}$ annihilation into states of positive $C$ parity, namely, ${\ensuremath{\rho}}^{0}{\ensuremath{\rho}}^{0}$ and $\ensuremath{\phi}{\ensuremath{\rho}}^{0}$. The two states are observed in the ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${K}^{+}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ final states, respectively, in a data sample of $225\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by the …
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