Study of eta and dipion transitions in Upsilon(4S) decays to lower bottomonia
- Authors
- Guido, E.; Mussa, R.; Tamponi, U.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Ayad, R.; Badhrees, I.; Bakich, A. M.; Bansal, V.; Behera, P.; Bhardwaj, V.; Bhuyan, B.; Biswal, J.; Bobrov, A.; Bondar, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Cervenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, K.; Choi, S. -K.; Choi, Y.; Cinabro, D.; Dash, N.; Di Carlo, S.; Dolezal, Z.; Drasal, Z.; Eidelman, S.; Epifanov, D.; Farhat, H.; Fast, J. E.; Ferber, T.; Fulsom, B. G.; Gaur, V.; Gabyshev, N.; Garmash, A.; Gelb, M.; Gillard, R.; Goldenzweig, P.; Haba, J.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hedges, M. T.; Hou, W. -S.; Iijima, T.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, Y.; Jacobs, W. W.; Jaegle, I.; Jeon, H. B.; Jia, S.; Jin, Y.; Joffe, D.; Joo, K. K.; Julius, T.; Kang, K. H.; Karyan, G.; Kawasaki, T.; Kim, D. Y.; Kim, J. B.; Kim, K. T.; Kim, M. J.; Kim, S. H.; Kim, Y. J.; Kinoshita, K.; Kodys, P.; Korpar, S.; Kotchetkov, D.; Krizan, P.; Krokovny, P.; Kulasiri, R.; Kumita, T.; Kuzmin, A.; Kwon, Y. -J.; Lange, J. S.; Lewis, P.; Li, C. H.; Li, L.; Li Gioi, L.; Libby, J.; Liventsev, D.; Lubej, M.; Luo, T.; Masuda, M.; Matsuda, T.; Matvienko, D.; Merola, M.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Moon, H. K.; Mori, T.; Nakano, E.; Nakao, M.; Nanut, T.; Nath, J.; Natkaniec, Z.; Nayak, M.; Niiyama, M.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Ono, H.; Pakhlov, P.; Pakhlova, G.; Pal, B.; Pardi, S.; Park, C. -S.; Park, H.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Pulvermacher, C.; Ritter, M.; Rostomyan, A.; Sakai, Y.; Sandilya, S.; Santelj, L.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M. E.; Shebalin, V.; Shen, C. P.; Shibata, T. -A.; Shiu, J. -G.; Shwartz, B.; Simon, F.; Sokolov, A.; Solovieva, E.; Staric, M.; Strube, J. F.; Sumisawa, K.; Sumiyoshi, T.; Takizawa, M.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Usov, Y.; Van Hulse, C.; Varner, G.; Vinokurova, A.; Vorobyev, V.; Vossen, A.; Wang, C. H.; Wang, P.; Wang, X. L.; Watanabe, M.; Watanabe, Y.; Watanuki, S.; Widmann, E.; Williams, K. M.; Won, E.; Yamashita, Y.; Ye, H.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhukova, V.; Zhulanov, V.; Zupanc, A.
- Issue Date
- 28-9월-2017
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.96, no.5
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 96
- Number
- 5
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/82186
- DOI
- 10.1103/PhysRevD.96.052005
- ISSN
- 2470-0010
- Abstract
- We study hadronic transitions between bottomonium states using 496 fb(-1) data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We measure: B(Upsilon(4S) -> pi(+)pi(-)Upsilon(1S)) = (8.2 +/- 0.5(stat.)+/- 0.4(syst.)) x 10(-5), B(Upsilon(4S) -> pi(+)pi(-)Upsilon(2S)) = (7.9 +/- 1.0(stat.)+/- 0.4(syst.)) x 10(-5), and B(Upsilon(4S) -> eta Upsilon(1S)) = (1.70 +/- 0.23(stat.) +/- 0.08(syst.)) x 10(-4). We measure the ratio of branching fractions R=B(Upsilon(4S) -> eta Upsilon(1S))/B(Upsilon(4S) -> pi(+)pi(-)Upsilon(1S)) = 2.07 +/- 0.30(stat.)+/- 0.11(syst.). We search for the decay Upsilon(1(3)D(1,2)) -> eta Upsilon(1S), but do not find significant evidence for such a transition. We also measure the initial state radiation production cross sections of the Upsilon(2S,3S) resonances and we find values compatible with the expected ones. Finally, the analysis of the Upsilon(4S) -> pi(+)pi(-)Upsilon(1S) events shows indications for a resonant contribution due to the f(0)(980) meson.
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