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Study of the hadronic transitions Y(2S) -> (eta, pi(0))Y(1S) at Belle
- Authors
- Tamponi, U.; Mussa, R.; Adachi, I.; Aihara, H.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Barrett, M.; Bhuyan, B.; Bondar, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Chen, A.; Chen, P.; Cheon, B. G.; Chilikin, K.; Cho, I-S; Cho, K.; Choi, Y.; Dalseno, J.; Dolezal, Z.; Drasal, Z.; Dutta, D.; Eidelman, S.; Epifanov, D.; Esen, S.; Farhat, H.; Fast, J. E.; Frey, A.; Gaur, V.; Gillard, R.; Goh, Y. M.; Golob, B.; Hayasaka, K.; Horii, Y.; Hoshi, Y.; Hyun, H. J.; Iijima, T.; Ishikawa, A.; Iwasaki, Y.; Jaegle, I.; Kang, J. H.; Kawasaki, T.; Kim, H. O.; Kim, J. H.; Kim, K. T.; Kim, M. J.; Kim, Y. J.; Klucar, J.; Ko, B. R.; Kodys, P.; Korpar, S.; Kouzes, R. T.; Krizan, P.; Krokovny, P.; Kumita, T.; Kuzmin, A.; Lee, S-H; Li, Y.; Liu, C.; Liu, Y.; Liu, Z. Q.; Liventsev, D.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moll, A.; Muramatsu, N.; Nakao, M.; Natkaniec, Z.; Ng, C.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Pakhlov, P.; Park, H. K.; Park, K. S.; Pedlar, T. K.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Roehrken, M.; Sakai, Y.; Sandilya, S.; Santel, D.; Santelj, L.; Sanuki, T.; Schneider, O.; Schnell, G.; Schwanda, C.; Senyo, K.; Shen, C. P.; Shibata, T-A; Shiu, J-G; Shwartz, B.; Simon, F.; Smerkol, P.; Sohn, Y-S; Sokolov, A.; Solovieva, E.; Staric, M.; Sumiyoshi, T.; Tanida, K.; Taniguchi, N.; Tatishvili, G.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Uno, S.; Van Hulse, C.; Vanhoefer, P.; Varner, G.; Wang, C. H.; Wang, M-Z; Wang, P.; Wang, X. L.; Watanabe, M.; Watanabe, Y.; Williams, K. M.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.
- Issue Date
- 29-1월-2013
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.87, no.1
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 87
- Number
- 1
- ISSN
- 1550-7998
- Abstract
- We study the rare hadronic transitions Y(2S) -> Y(1S)eta and Y(2S) -> Y(1S)pi(0) using a sample of 158 x 10(6)Y(2S) decays collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure the ratios of branching fractions (B) B(Y(2S)-> Y(1S)eta)/B(Y(2S)-> Y(1S)pi(+)pi(-)) = (1.99 +/- 0.14(stat) +/- 0.11(syst) x 10(-3) and B(Y(2S)-> Y(1S)pi(0))/B(Y(2S)-> Y(1S)pi(+)pi(-)) < 2.3 x 10(-4) at the 90% confidence level (CL). Assuming the value B(Y(2S)-> Y(1S)pi(-)pi(+)) = (17.92 +/- 0.26)%, we obtain B(Y(2S)-> Y(1S)eta) = (3.57 +/- 0.25(stat) +/- 0.21(syst)) x 10(-4) and Y(2S) -> Y(1S)pi(0) < 4.1 x 10(-5)(90%CL). DOI: 10.1103/PhysRevD.87.011104
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