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  • Energy Scan of the e^{+}e^{-}→h_{b}(nP)π^{+}π^{-} (n=1, 2) Cross Sections and Evidence for ϒ(11020) Decays into Charged Bottomoniumlike States
    Mizuk, R; Adachi, I; Asner, D M; Atmacan, H; Aushev, T; Badhrees, I; Barberio, E; Bhardwaj, V; Bhuyan, B; Bobrov, A; Bonvicini, G; Bozek, A; Chen, A; Cheon, B G; Chistov, R; Choi, S-K; Choi, Y; Cinabro, D; Dalseno, J; Danilov, M; Dash, N; Doležal, Z; Drutskoy, A; Eidelman, S; Epifanov, D; Ferber, T; Fulsom, B G; Garmash, A; Gillard, R; Golob, B; Greenwald, D; Hayasaka, K; Hou, W-S; Inami, K; Ishikawa, A; Jaegle, I; Kim, H J; Kim, J B; Kim, K T; Kim, M J; Kim, Y J; Kinoshita, K; Kodyš, P; Kotchetkov, D; Krokovny, P; Kuhr, T; Kuzmin, A; Kwon, Y-J; Lange, J S; Li, C H; Li, H; Li Gioi, L; Libby, J; Masuda, M; Matsuda, T; Matvienko, D; Miyata, H; Mohanty, G B; Moll, A; Nakao, M; Nanut, T; Niiyama, M; Nisar, N K; Nishida, S; Ogawa, S; Okuno, S; Olsen, S L; Pal, B; Pestotnik, R; Petrič, M; Piilonen, L E; Pulvermacher, C; Ritter, M; Schlüter, T; Schneider, O; Schwanda, C; Seino, Y; Semmler, D; Senyo, K; Seon, O; Sevior, M E; Shebalin, V; Shiu, J-G; Simon, F; Solovieva, E; Sumiyoshi, T; Tanida, K; Teramoto, Y; Tikhomirov, I; Uchida, M; Unno, Y; Uno, S; Vorobyev, V; Watanabe, Y; Won, E; Yamaoka, J; Yuan, C Z; Zhang, Z P; Zhukova, V; Zhulanov, V

    Physical review letters, 2016-Sep-30, Letnik: 117, Številka: 14
    Journal Article

    Using data collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider, we measure the energy dependence of the e^{+}e^{-}→h_{b}(nP)π^{+}π^{-} (n=1, 2) cross sections from thresholds up to 11.02 GeV. We find clear ϒ(10860) and ϒ(11020) peaks with little or no continuum contribution. We study the resonant substructure of the ϒ(11020)→h_{b}(nP)π^{+}π^{-} transitions and find evidence that they proceed entirely via the intermediate isovector states Z_{b}(10610) and Z_{b}(10650). The relative fraction of these states is loosely constrained by the current data: The hypothesis that only Z_{b}(10610) is produced is excluded at the level of 3.3 standard deviations, while the hypothesis that only Z_{b}(10650) is produced is not excluded at a significant level.

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