Search for charmonium and charmonium-like states in ϒ(2S) radiative decays

Wang, X. L.; Wang, P.; Adachi, I.; Aihara, H.; Asner, D. M.; Aushev, T.; Bakich, A. M.; Barberio, E.; Belous, K.; Bhuyan, B.; Bozek, A.; Bracko, M.; Browder, T. E.; Shen, C. P.; Chang, M.-C.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, I.-S.; Cho, K.; Choi, Y.; Dalseno, J.; Yuan, C. Z.; Danilov, M.; Dolezal, Z.; Eidelman, S.; Fast, J. E.; Feindt, M.; Gaur,; Goh, Y. M.; Haba, J.; Hayasaka, K.; Hayashii, H.; Hoshi, Y.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Ishikawa, A.; Itoh, R.; Iwabuchi, M.; Iwasaki, Y.; Iwashita, T.; Julius, T.; Kang, J. H.; Katayama, N.; Kawasaki, T.; Kichimi, H.; Kim, H. J.; Kim, H. O.; Kim, J. B.; Kim, J. H.; Kim, K. T.; Kim, M. J.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Kobayashi, N.; Koblitz, S.; Krizan, P.; Kuzmin, A.; Kwon, Y.-J.; Lange, J. S.; Lee, S.-H.; Li, J.; Li, X. R.; Li, Y.; Libby, J.; Lim, C.-L.; Zhang, Z. P.; Liu, C.; Zhilich,; Liventsev, D.; Louvot, R.; Matvienko, D.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G. B.; Mussa, R.; Nagasaka, Y.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Neubauer, S.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Park, H.; Park, H. K.; Pedlar, T. K.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Ritter, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Sanuki, T.; Schneider, O.; Schwanda, C.; Senyo, K.; Seon, O.; Sevior, M. E.; Shapkin, M.; Shibata, T.-A.; Shiu, J.-G.; Shwartz, B.; Simon, F.; Smerkol, P.; Sohn, Y.-S.; Solovieva, E.; Stanic, S.; Staric, M.; Sumihama, M.; Tatishvili, G.; Teramoto, Y.; Trabelsi, K.; Uchida, M.; Uehara, S.; Unno, Y.; Uno, S.; Usov, Y.; Varner, G.; Wang, C. H.; Wang, M.-Z.; Watanabe, Y.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yamauchi, M.; Collaboration, Belle

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Search for charmonium and charmonium-like states in ϒ(2S) radiative decays

Journal article published in 2011 by X. L. Wang, P. Wang, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, E. Barberio, K. Belous, B. Bhuyan, A. Bozek, M. Bracko, T. E. Browder, C. P. Shen, M.-C. Chang and other authors.

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Abstract

Using a sample of 158 million ϒ(2S) events collected with the Belle detector, charmonium and charmonium-like states with even charge parity are searched for in ϒ(2S) radiative decays. No significant χ_{cJ} or η_c signal is observed and the following upper limits at 90% confidence level (C.L.) are obtained: BR(ϒ(2S)\to γ χ_{c0})