Energy scan of the $e^+e^- \to h_b(nP)π^+π^-$ $(n=1,2)$ cross sections and evidence for $Υ(11020)$ decays into charged bottomonium-like states
Creators: name: Belle Collaboration
name: Mizuk, R.
name: Bondar, A.
name: Adachi, I.
name: Aihara, H.
name: Atmacan, H.
name: Aulchenko, V.
name: Aushev, T.
name: Ayad, R.
name: Badhrees, I.
name: Bakich, A. M.
name: Barberio, E.
name: Behera, P.
name: Bhardwaj, V.
name: Bhuyan, B.
name: Biswal, J.
name: Bobrov, A.
name: Bonvicini, G.
name: Bozek, A.
name: Bračko, M.
name: Browder, T. E.
name: Červenkov, D.
name: Chekelian, V.
name: Chen, A.
name: Cheon, B. G.
name: Chilikin, K.
name: Chobanova, V.
name: Choi, S. -K.
name: Choi, Y.
name: Cinabro, D.
name: Dalseno, J.
name: Dash, N.
name: Drutskoy, A.
name: Eidelman, S.
name: Epifanov, D.
name: Ferber, T.
name: Fulsom, B. G.
name: Gaur, V.
name: Garmash, A.
name: Gillard, R.
name: Goh, Y. M.
name: Goldenzweig, P.
name: Golob, B.
name: Greenwald, D.
name: Hara, T.
name: Hayashii, H.
name: Hou, W. -S.
name: Hsu, C. -L.
name: Inami, K.
name: Inguglia, G.
name: Ishikawa, A.
name: Iwasaki, Y.
name: Jaegle, I.
name: Julius, T.
name: Kang, K. H.
name: Kim, D. Y.
name: Kim, H. J.
name: Kim, J. B.
name: Kim, K. T.
name: Kim, M. J.
name: Kim, S. H.
name: Kim, Y. J.
name: Kinoshita, K.
name: Kodyš, P.
name: Korpar, S.
name: Kotchetkov, D.
name: Krokovny, P.
name: Kuzmin, A.
name: Kwon, Y. -J.
name: Li, C. H.
name: Li, H.
name: Li, L.
name: Gioi, L. Li
name: Libby, J.
name: Liventsev, D.
name: Lubej, M.
name: Luo, T.
name: Masuda, M.
name: Matsuda, T.
name: Matvienko, D.
name: Miyata, H.
name: Mohanty, G. B.
name: Moll, A.
name: Nakano, E.
name: Nanut, T.
name: Nath, K. J.
name: Negishi, K.
name: Niiyama, M.
name: Nisar, N. K.
name: Nishida, S.
name: Ogawa, S.
name: Okuno, S.
name: Olsen, S. L.
name: Onuki, Y.
name: Pakhlov, P.
name: Pakhlova, G.
name: Pal, B.
name: Park, C. W.
name: Park, H.
name: Paul, S.
name: Pedlar, T. K.
name: Pestotnik, R.
name: Petrič, M.
name: Piilonen, L. E.
name: Pulvermacher, C.
name: Ritter, M.
name: Sakai, Y.
name: Sandilya, S.
name: Sanuki, T.
name: Savinov, V.
name: Schlüter, T.
name: Schneider, O.
name: Schnell, G.
name: Schwanda, C.
name: Seino, Y.
name: Semmler, D.
name: Senyo, K.
name: Seon, O.
name: Sevior, M. E.
name: Shebalin, V.
name: Shibata, T. -A.
name: Shiu, J. -G.
name: Shwartz, B.
name: Simon, F.
name: Solovieva, E.
name: Starič, M.
name: Stypula, J.
name: Sumiyoshi, T.
name: Takizawa, M.
name: Tamponi, U.
name: Tanida, K.
name: Teramoto, Y.
name: Trabelsi, K.
name: Uchida, M.
name: Uglov, T.
name: Unno, Y.
name: Uno, S.
name: Urquijo, P.
name: Usov, Y.
name: Van Hulse, C.
name: Varner, G.
name: Vorobyev, V.
name: Wang, C. H.
name: Wang, M. -Z.
name: Wang, P.
name: Wang, X. L.
name: Watanabe, Y.
name: Williams, K. M.
name: Won, E.
name: Yamaoka, J.
name: Yamashita, Y.
name: Yelton, J.
name: Yuan, C. Z.
name: Zhang, Z. P.
name: Zhilich, V.
name: Zhukova, V.
name: Zhulanov, V.
name: Zupanc, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Using data collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we measure the energy dependence of the $e^+e^- \to h_b(nP)π^+π^-$ $(n=1,2)$ 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 $Υ(11020) \to h_b(nP)π^+π^-$ 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.
description: 8 pages, 4 figures, submitted to Physical Review Letters