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First Observation of the P-Wave Spin-Singlet Bottomonium States h(b)(1P) and h(b)(2P)open access
- Authors
- Adachi, I.; Aihara, H.; Arinstein, K.; Asner, D. M.; Aushev, T.; Aziz, T.; Bakich, A. M.; Barberio, E.; Belous, K.; Bhardwaj, V.; Bhuyan, B.; Bondar, A.; Bracko, M.; Brodzicka, J.; Browder, T. E.; Chang, P.; Chen, A.; Chen, P.; Cheon, Byung Gu; Chilikin, K.; Chistov, R.; Cho, I. -S.; Cho, K.; Choi, Y.; Dalseno, J.; Danilov, M.; Drasal, Z.; Drutskoy, A.; Eidelman, S.; Epifanov, D.; Esen, S.; Fast, J. E.; Feindt, M.; Gaur, V.; Gabyshev, N.; Garmash, A.; Goh, Y. M.; Golob, B.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hoshi, Y.; Hou, W. -S.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Ishikawa, A.; Iwabuchi, M.; Iwasaki, Y.; Jaegle, I.; Julius, T.; Kang, J. H.; Katayama, N.; Kawasaki, T.; Kichimi, H.; Kim, H. O.; Kim, J. B.; Kim, K. T.; Kim, M. J.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Kobayashi, N.; Koblitz, S.; Korpar, S.; Krizan, P.; Kuhr, T.; Kumita, T.; Kuzmin, A.; Kwon, Y-J.; Lange, J. S.; Lee, S. -H.; Li, J.; Libby, J.; Liu, C.; Liventsev, D.; Louvot, R.; MacNaughton, J.; Matvienko, D.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mohanty, G. B.; Mussa, R.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Neubauer, S.; Nishida, S.; Nishimura, K.; Nitoh, O.; Nozaki, T.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Park, H.; Pedlar, T. K.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Poluektov, A.; Ritter, M.; Roehrken, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Sanuki, T.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Seon, O.; Sevior, M. E.; Shapkin, M.; Shebalin, V.; Shibata, T. -A.; Shiu, J. -G.; Shwartz, B.; Simon, F.; Smerkol, P.; Sohn, Y. -S.; Sokolov, A.; Solovieva, E.; Stanic, S.; Staric, M.; Sumihama, M.; Tatishvili, G.; Teramoto, Y.; Tikhomirov, I.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Vahsen, S. E.; Varner, G.; Varvell, K. E.; Vinokurova, A.; Wang, C. H.; Wang, X. L.; Watanabe, Y.; Wicht, J.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yuan, C. Z.; Zhilich, V.; Zupanc, A.
- Issue Date
- Jan-2012
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.108, no.3, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 108
- Number
- 3
- Start Page
- 1
- End Page
- 6
- ISSN
- 0031-9007
- Abstract
- We report the first observations of the spin-singlet bottomonium states h(b)(1P) and h(b)(2P). The states are produced in the reaction e(+)e(-) --> h(b)(nP)pi(+)pi(-) using a 121.4 fb(-1) data sample collected at energies near the Y(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We determine M[h(b)(1P)] = (9898.2(-1.0-1.1)(+1.1+1.0)) MeV/c(2) and M[h(b)(2P)] = (10 259.8 +/- 0.6(-1.0)(+1.4)) MeV/c(2), which correspond to P-wave hyperfine splittings Delta M-HF = (+1.7 +/- 1.5) and (+0.5(-1.2)(+1.6)) MeV/c(2), respectively. The significances of the h(b)(1P) and h(b)(2P) are 5.5 sigma and 11.2 sigma, respectively. We find that the production of the h(b)(1P) and h(b)(2P) is not suppressed relative to the production of the Y(1S), Y(2S), and Y(3S).
- Appears in
Collections - 서울 자연과학대학 > 서울 물리학과 > 1. Journal Articles
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Related Researcher
- Cheon, Byung Gu
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)