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Al Said, S; Asner, D M; Ayad, R; Babu, V; Badhrees, I; Bansal, V; Berger, M; Bondar, A; Bozek, A; Browder, T E; Červenkov, D; Cheon, B G; Choi, Y; Cunliffe, S; Di Carlo, S; Eidelman, S; Epifanov, D; Fast, J E; Ferber, T; Garmash, A; Giri, A; Goldenzweig, P; Hara, T; Hayashii, H; Hou, W-S; Inami, K; Inguglia, G; Ishikawa, A; Iwasaki, Y; Jeon, H B; Jin, Y; Julius, T; Karyan, G; Kim, D Y; Kim, K T; Kinoshita, K; Kotchetkov, D; Križan, P; Kroeger, R; Kulasiri, R; Kumita, T; Lee, S C; Li, L K; Li Gioi, L; Libby, J; Liventsev, D; Lubej, M; Luo, T; MacNaughton, J; Matsuda, T; Matvienko, D; Merola, M; Miyata, H; Mizuk, R; Moon, H K; Nath, K J; Niiyama, M; Ogawa, S; Ostrowicz, W; Pal, B; Pardi, S; Park, C W; Paul, S; Pestotnik, R; Piilonen, L E; Popov, V; Rostomyan, A; Russo, G; Sanuki, T; Schneider, O; Schwanda, C; Seino, Y; Shebalin, V; Shen, C P; Shibata, T-A; Shiu, J-G; Sokolov, A; Starič, M; Sumihama, M; Sumiyoshi, T; Takizawa, M; Tanida, K; Uchida, M; Uglov, T; Unno, Y; Vinokurova, A; Wang, B; Wang, C H; Wang, M-Z; Wang, P; Wang, X L; Watanabe, M; Won, E; Ye, H; Yelton, J; Yuan, C Z; Zakharov, S; Zhang, Z P; Zhukova, V; Zhulanov, V
Physical review letters, 2018-Aug-10, Letnik: 121, Številka: 6Journal Article
We report the first observation of the hadronic transition ϒ(4S)→η^{'}ϒ(1S), using 496 fb^{-1} data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We reconstruct the η^{'} meson through its decays to ρ^{0}γ and to π^{+}π^{-}η, with η→γγ. We measure B(ϒ(4S)→η^{'}ϒ(1S))=3.43±0.88(stat)±0.21(syst)×10^{-5}, with a significance of 5.7σ.
