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Search for charmonium and charmoniumlike states in Y(1S) radiative decays
- Authors
- Shen, C. P.; Wang, X. L.; Yuan, C. Z.; Wang, P.; Adachi, I.; Aihara, H.; Aushev, T.; Bakich, A. M.; Balagura, V.; Belous, K.; Bhardwaj, V.; Bischofberger, M.; Bracko, M.; Browder, T. E.; Chang, M. -C.; Chen, K. -F.; Chen, P.; Cheon, B. G.; Choi, Y.; Dalseno, J.; Danilov, M.; Dolezal, Z.; Eidelman, S.; Gabyshev, N.; Ha, H.; Haba, J.; Hayasaka, K.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Inami, K.; Itoh, R.; Iwabuchi, M.; Iwasaki, Y.; Julius, T.; Kang, J. H.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Kim, H. J.; Kim, M. J.; Kim, Y. J.; Ko, B. R.; Krizan, P.; Kuhr, T.; Kuzmin, A.; Lange, J. S.; Lee, M. J.; Lee, S. -H.; Leitner, R.; Li, J.; Liu, C.; Louvot, R.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G. B.; Mussa, R.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Pakhlova, G.; Park, C. W.; Park, H.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Roehrken, M.; Ryu, S.; Sakai, Y.; Schneider, O.; Schwanda, C.; Senyo, K.; Sevior, M. E.; Shang, L.; Shapkin, M.; Shiu, J. -G.; Shwartz, B.; Smerkol, P.; Solovieva, E.; Stanic, S.; Staric, M.; Teramoto, Y.; Uglov, T.; Unno, Y.; Uno, S.; Varner, G.; Vervink, K.; Wang, C. H.; Wang, M. -Z.; Wedd, R.; Won, E.; Yamashita, Y.; Yamauchi, M.; Zhang, C. C.; Zhang, Z. P.; Zhou, P.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.
- Issue Date
- 22-Sep-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.82, no.5
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 82
- Number
- 5
- ISSN
- 1550-7998
- Abstract
- Using a sample of 102 X 10(6) Y(1S) events collected with the Belle detector, we report on the first search for charge-parity-even charmonium and charmoniumlike states in Y(1S) radiative decays. No significant chi(cJ) or eta(c) signal is observed and 90% C. L. limits on B(Y(1S) -> gamma chi(c0)) < 6.5 X 10(-4), B(Y(1S) -> gamma chi(c1)) < 2.3 X 10(-5), B(Y(1S) -> gamma chi(c2)) < 7.6 X 10(-6), and B(Y(1S) -> gamma eta(c)) < 5.7 X 10(-5) are obtained. The product branching fraction limits B(Y(1S) -> gamma X(3872))B(X(3872) -> pi(+) pi(-) J/psi) < 1.6 X 10(-6), B(Y(1S) -> gamma X(3872))B(X(3872) -> pi+ pi(-) pi(0) J/psi) < 2.8 X 10(-6), B(Y(1S) -> gamma X(3915)) B(X(3915) -> omega J/psi) < 3.0 X 10(-6), and B(Y(1S) -> gamma Y(4140))B(Y(4140) -> phi J/psi) < 2.2 X 10(-6) are obtained at the 90% C.L. Furthermore, no evidence is found for excited charmonium states below 4.8 GeV/c(2).
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Related Researcher
- Won, Eun il
- College of Science (Department of Physics)