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  • Search for transitions from $\Upsilon(4S)$ and $\Upsilon(5S)$ to $\eta_b(1S)$ and $\eta_b(2S)$ with emission of an $\omega$ meson
    Belle Collaboration; Mizuk, R; Aihara, H; Atmacan, H; Aulchenko, V; Ayad, R; Behera, P; Belous, K; Bennett, J; Bessner, M; Bhuyan, B; Bilka, T; Biswal, J; Campajola, M; Chang, P; Chekelian, V; Chilikin, K; Choi, S. -K; Choudhury, S; Cinabro, D; Dhamija, R; Dong, T. V; Dubey, S; Eidelman, S; Epifanov, D; Gaur, V; Gabyshev, N; Garmash, A; Golob, B; Gudkova, K; Hadjivasiliou, C; Hedges, M. T; Hou, W. -S; Iijima, T; Ishikawa, A; Itoh, R; Iwasaki, M; Jia, S; Joo, C. W; Kaliyar, A. B; Kim, C. H; Kotchetkov, D; Kumar, R; Kumara, K; Kwon, Y. -J; Lange, J. S; Lewis, P; Li, L. K; Gioi, L. Li; Libby, J; Matsuda, T; Moon, T. J; Mori, T; Mussa, R; Nakazawa, H; Natochii, A; Nisar, N. K; Nishida, S; Ogawa, S; Onuki, Y; Pakhlov, P; Park, H; Park, S. -H; Paul, S; Piilonen, L. E; Podobnik, T; Prim, M. T; Russo, G; Sahoo, D; Sakai, Y; Sangal, A; Santelj, L; Sanuki, T; Schueler, J; Senyo, K; Shiu, J. -G; Sokolov, A; Starič, M; Stottler, Z. S; Sumisawa, K; Takizawa, M; Tamponi, U; Tanida, K; Trabelsi, K; Uglov, T; Uno, S; Usov, Y; Van Tonder, R; Vinokurova, A; Waheed, E; Wang, C. H; Wiechczynski, J; Won, E; Yan, W; Yang, S. B; Yin, J. H; Yuan, C. Z; Yusa, Y; Zhilich, V; Zhukova, V

    09/2020
    Journal Article

    Using data collected in the Belle experiment at the KEKB asymmetric-energy $e^+e^-$ collider we search for transitions $\Upsilon(4S) \rightarrow \eta_b(1S)\omega$, $\Upsilon(5S) \rightarrow \eta_b(1S)\omega$ and $\Upsilon(5S) \rightarrow \eta_b(2S)\omega$. No significant signals are observed and we set 90\% confidence level upper limits on the corresponding visible cross sections: $0.2 ~\textrm{pb}, 0.4 ~\textrm{pb}$ and $1.9 ~\textrm{pb}$, respectively.

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