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Search for the process mathbf{it e^+e^-toη^(prime)γ} in the energy range mathbf{it sqrt{s}} = 1.075 -- 2 GeV
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Search for the process mathbf{it e^+e^-toη^(prime)γ} in the energy range mathbf{it sqrt{s}} = 1.075 -- 2 GeV
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The results of the search for the $e^+e^-\to\eta^{\prime}\gamma$ process in the center-of-mass energy range from 1.075 to 2 GeV are presented. We analyze data with an integral luminosity of 746 pb$^{-1}$ accumulated with the SND detector at the $e^+e^-$ collider VEPP-2000 in 2010--2024. The $\eta^{\prime}\to\eta\pi^0\pi^0$ decay is used in the analysis, with the subsequent $\eta$ and $\pi^0$ decays into $\gamma\gamma$. Upper limits not exceeding 13 pb have been set on the $e^+e^-\to\eta^{\prime}\gamma$ cross section at the 90\% confidence level.
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Cited by 1 Pith paper
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