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  • Observation of Z_{b}(10610) and Z_{b}(10650) Decaying to B Mesons
    Adachi, I; Asner, D M; Aushev, T; Ayad, R; Badhrees, I; Bhardwaj, V; Bhuyan, B; Bobrov, A; Bondar, A; Bonvicini, G; Bračko, M; Červenkov, D; Chekelian, V; Chen, A; Cheon, B G; Chobanova, V; Choi, Y; Cinabro, D; Dalseno, J; Danilov, M; Doležal, Z; Drutskoy, A; Eidelman, S; Farhat, H; Fast, J E; Ferber, T; Gabyshev, N; Gillard, R; Hayasaka, K; Iijima, T; Ishikawa, A; Jaegle, I; Kato, E; Kawasaki, T; Kim, J B; Kim, K T; Kim, M J; Kim, Y J; Kinoshita, K; Korpar, S; Križan, P; Krokovny, P; Kwon, Y-J; Lange, J S; Lee, I S; Li, C; Li Gioi, L; Libby, J; Liventsev, D; Masuda, M; Miyabayashi, K; Mohanty, G B; Mori, T; Nakao, M; Nishida, S; Olsen, S L; Pakhlova, G; Pal, B; Park, H; Pedlar, T K; Pestotnik, R; Petrič, M; Pulvermacher, C; Ribežl, E; Ritter, M; Rostomyan, A; Sanuki, T; Schneider, O; Schnell, G; Schwanda, C; Semmler, D; Seong, I S; Sevior, M E; Shen, C P; Shibata, T-A; Shiu, J-G; Simon, F; Sohn, Y-S; Starič, M; Sumiyoshi, T; Tamponi, U; Tanida, K; Teramoto, Y; Uehara, S; Uglov, T; Van Hulse, C; Vanhoefer, P; Vorobyev, V; Wang, C H; Wang, M-Z; Wang, P; Watanabe, Y; Williams, K M; Won, E; Yamamoto, H; Yamaoka, J; Yelton, J; Zhilich, V; Zhulanov, V; Zupanc, A

    Physical review letters, 2016-May-27, Letnik: 116, Številka: 21
    Journal Article

    We report the analysis of the three-body e^{+}e^{-}→BBover ¯π^{±}, BBover ¯^{*}π^{±}, and B^{*}Bover ¯^{*}π^{±} processes, including the first observations of the Z_{b}^{±}(10610)→BBover ¯^{*}+c.c.^{±} and Z_{b}^{±}(10650)→B^{*}Bover ¯^{*}^{±} transitions that are found to dominate the corresponding final states. We measure Born cross sections for the three-body production of σ(e^{+}e^{-}→BBover ¯^{*}+c.c.^{±}π^{∓})=17.4±1.6(stat)±1.9(syst)  pb and σ(e^{+}e^{-}→B^{*}Bover ¯^{*}^{±}π^{∓})=8.75±1.15(stat)±1.04(syst)  pb and set a 90% C.L. upper limit of σ(e^{+}e^{-}→BBover ¯^{±}π^{∓})<2.9  pb. The results are based on a 121.4  fb^{-1} data sample collected with the Belle detector at a center-of-mass energy near the ϒ(10860) peak.

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