151. Energy Scan of thee+e−→hb(nP)π+π−(n=1, 2) Cross Sections and Evidence forϒ(11020)Decays into Charged Bottomoniumlike States
- Author
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A. Drutskoy, M. Niiyama, T. Matsuda, S. Uno, S. L. Olsen, K. Trabelsi, G. Bonvicini, J. Libby, C. H. Li, S. H. Kim, P. Krokovny, C. L. Hsu, C. Pulvermacher, K. H. Kang, Y. Watanabe, T. Aushev, Marko Petrič, A. Zupanc, K. Senyo, S. Nishida, Y. Seino, J. G. Shiu, B.A. Shwartz, T. Sumiyoshi, J. Dalseno, N. K. Nisar, Peter Kodys, T. Ferber, Martin Ritter, P. Katrenko, Y. Yamashita, M. Uchida, T. Sanuki, D. Matvienko, Phillip Urquijo, E. Nakano, D. Liventsev, V. Chobanova, D. Cinabro, T. K. Pedlar, A. Moll, Vladimir Zhulanov, G. Schnell, B. Pal, Z. P. Zhang, A. Garmash, K. Negishi, H. Li, M. E. Sevior, M. Lubej, Y. Onuki, L. E. Piilonen, P. Goldenzweig, D. M. Asner, G. Inguglia, C. Van Hulse, V. Zhukova, D. Semmler, G. S. Varner, J. Stypula, T. Luo, M. Masuda, Daniel Greenwald, T. Schlüter, R. Mizuk, C. Z. Yuan, D. A. Epifanov, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, I. Tikhomirov, P. Wang, S. Okuno, V.M. Aulchenko, T. Julius, T. Kuhr, S.I. Eidelman, B. G. Fulsom, G. B. Mohanty, B. G. Cheon, K. Hayasaka, E. L. Barberio, Y. Teramoto, H. Atmacan, Y. Unno, Ruslan Chistov, Yongsun Kim, Jyoti Prakash Biswal, R. Ayad, S. Korpar, D. Y. Kim, C. Schwanda, P. Pakhlov, V. Gaur, I. Adachi, J. Yamaoka, J. B. Kim, H. J. Kim, E. Solovieva, A.E. Bondar, M. Takizawa, G. Pakhlova, A. Kuzmin, Kiyoshi Tanida, T. Hara, H. Aihara, N. Dash, Y. Usov, S. Ogawa, V. Bhardwaj, D. Kotchetkov, K. M. Williams, A. Chen, John Yelton, Z. Doležal, X. L. Wang, H. Park, Mikhail Danilov, A. Bozek, K. T. Kim, Tara Nanut, R. Gillard, T. Uglov, L. Li Gioi, S. K. Choi, O. Seon, Frank Simon, Y. Choi, K. J. Nath, R. Pestotnik, C. H. Wang, B. Bhuyan, T. E. Browder, Y. Sakai, Y. M. Goh, A. Bobrov, V.E. Shebalin, H. Hayashii, V. Savinov, Soumen Paul, Liangbin Li, V. Chekelian, K. Chilikin, K. Inami, M. Z. Wang, K. Kinoshita, U. Tamponi, V.N. Zhilich, I. Jaegle, S. Sandilya, K. Miyabayashi, I. Badhrees, M. J. Kim, M. Bračko, M. Starič, Y. Iwasaki, Y. J. Kwon, O. Schneider, B. Golob, A. M. Bakich, J. S. Lange, E. Won, D. Červenkov, W. S. Hou, V. Vorobyev, A. Ishikawa, M. Nakao, and C. W. Park
- Subjects
Physics ,KEKB ,Isovector ,010308 nuclear & particles physics ,Electron–positron annihilation ,0103 physical sciences ,Pi ,General Physics and Astronomy ,Intermediate state ,Atomic physics ,010306 general physics ,01 natural sciences - Abstract
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)pi(+)pi(-) (n = 1, 2) cross sections from thresholds up to 11.02 GeV. We find clear gamma(10860) and gamma(11020) peaks with little or no continuum contribution. We study the resonant substructure of the gamma(11020) -> h(b)(nP)pi(+)pi(_) 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.
- Published
- 2016