Observation of a narrow charmoniumlike state in exclusive [formula presented] decays

S. K. Choi, S. L. Olsen, K. Abe, T. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, S. Banerjee, A. Bondar, A. Bozek, M. BračkoJ. Brodzicka, T. E. Browder, P. Chang, Y. Chao, K. F. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, J. Flanagan, C. Fukunaga, K. Furukawa, N. Gabyshev, T. Gershon, B. Golob, H. Guler, R. Guo, C. Hagner, F. Handa, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, L. Hinz, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, E. Kikutani, H. J. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, H. Koiso, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, S. Kumar, A. Kuzmin, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, S. W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumoto, S. Michizono, T. Mimashi, W. Mitaroff, K. Miyabayashi, H. Miyake, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, T. Nakadaira, T. T. Nakamura, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, Y. Ogawa, K. Ohmi, Y. Ohnishi, T. Ohshima, N. Ohuchi, K. Oide, T. Okabe, S. Okuno, W. Ostrowicz, H. Ozaki, H. Palka, H. Park, N. Parslow, L. E. Piilonen, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, A. J. Schwartz, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, N. Soni, S. Stanič, M. Starič, A. Sugiyama, T. Sumiyoshi, S. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, Y. Watanabe, Eunil Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, H. Yanai, Heyoung Yang, J. Ying, M. Yoshida, C. C. Zhang, Z. P. Zhang, D. Žontar

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Abstract

We report the observation of a narrow charmoniumlike state produced in the exclusive decay process [Formula presented]. This state, which decays into [Formula presented], has a mass of [Formula presented], a value that is very near the [Formula presented] mass threshold. The results are based on an analysis of 152M [Formula presented]-[Formula presented] events collected at the [Formula presented] resonance in the Belle detector at the KEKB collider. The signal has a statistical significance that is in excess of [Formula presented].

Original languageEnglish
JournalPhysical Review Letters
Volume91
Issue number26
DOIs
Publication statusPublished - 2003 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Choi, S. K., Olsen, S. L., Abe, K., Abe, T., Adachi, I., Ahn, B. S., Aihara, H., Akai, K., Akatsu, M., Akemoto, M., Asano, Y., Aso, T., Aulchenko, V., Aushev, T., Bakich, A. M., Ban, Y., Banerjee, S., Bondar, A., Bozek, A., ... Žontar, D. (2003). Observation of a narrow charmoniumlike state in exclusive [formula presented] decays. Physical Review Letters, 91(26). https://doi.org/10.1103/PhysRevLett.91.262001