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    • Search for the Radiative Transitions ψ(3770)→γη_c and γη_c(2S) 

      Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; An, F. F.; Lou, Xinchou (Amer Physical Soc, 2014-06-18)
      By using a 2.92 fb⁻¹ data sample taken at √s=3.773 GeV with the BESIII detector operating at the BEPCII collider, we search for the radiative transitions ψ(3770) → γη_c and γη_c(2S) through the hadronic decays η_c(η_c(2S)) ...