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- W2288909784 abstract "Existing data on the ${e}^{+}{e}^{ensuremath{-}}ensuremath{rightarrow}{K}^{+}{K}^{ensuremath{-}}$ cross section at the center-of-mass energy above 2.6 GeV are fitted with a sum of $ensuremath{psi}(3770)$ resonant and continuum contributions. Two solutions for the resonance production cross section are found with a significance of $3.2ensuremath{sigma}$. Data on the ${e}^{+}{e}^{ensuremath{-}}ensuremath{rightarrow}{K}_{S}{K}_{L}$ cross section are used to resolve the ambiguity and to further constrain the values of the ${e}^{+}{e}^{ensuremath{-}}ensuremath{rightarrow}ensuremath{psi}(3770)ensuremath{rightarrow}{K}^{+}{K}^{ensuremath{-}}$ cross section and the interference phase. They are found to be ${ensuremath{sigma}}_{ensuremath{psi}(3770)}=0.07{3}_{ensuremath{-}0.044}^{+0.061}text{ }text{ }mathrm{pb}$ and $ensuremath{phi}=(30{9}_{ensuremath{-}35}^{+17}{)}^{ifmmode^circelsetextdegreefi{}}$, respectively. The same fitting procedure for the $ensuremath{psi}(4160)$ resonance leads to the upper limit on the ${e}^{+}{e}^{ensuremath{-}}ensuremath{rightarrow}ensuremath{psi}(4160)ensuremath{rightarrow}{K}^{+}{K}^{ensuremath{-}}$ cross section ${ensuremath{sigma}}_{ensuremath{psi}(4160)}<0.062text{ }text{ }mathrm{pb}$ at the 90% confidence level." @default.
- W2288909784 created "2016-06-24" @default.
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- W2288909784 date "2015-09-22" @default.
- W2288909784 modified "2023-10-17" @default.
- W2288909784 title "Evidence for the decayψ(3770)→K+K−" @default.
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- W2288909784 doi "https://doi.org/10.1103/physrevd.92.054024" @default.
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