Observation of B + → χ c0K +

K. Abe, K. Abe, R. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, E. Banas, S. Behari, P. K. Behera, A. Bondar, A. Bozek, T. E. Browder, B. C.K. Casey, P. ChangY. Chao, B. G. Cheon, R. Chistov, Y. Choi, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, Y. Enari, H. Fujii, C. Fukunaga, M. Fukushima, N. Gabyshev, A. Garmash, A. Gordon, K. Gotow, R. Guo, J. Haba, H. Hamasaki, F. Handa, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, H. Hirano, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S. R. Hou, W. S. Hou, S. C. Hsu, H. C. Huang, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, D. J. Jackson, H. K. Jang, R. Kagan, J. Kaneko, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, H. Konishi, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lange, G. Leder, S. H. Lee, D. Liventsev, R. S. Lu

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Abstract

An overview is given on the first observation of the B +→Χ c0K +. The statistical significance of the signal is 6σ when the Χ c0→π +π - and Χ c0→K*Kπ modes are combined. The measured branching fraction is Β(Β→Χ c0K +) = (6.0 -1.8 +2.1 ± 1.1) × 10 -4 which is comparable to those for the B + → J/ψK + and B + → Χ c1K + decays. This provides evidence for a significant nonfactorizable contribution in B to charmonium decay processes.

Original languageEnglish
Pages (from-to)031802/1-031802
JournalPhysical review letters
Volume88
Issue number3
Publication statusPublished - 2002 Jan 21

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Abe, K., Abe, K., Abe, R., Adachi, I., Ahn, B. S., Aihara, H., Akatsu, M., Asano, Y., Aso, T., Aulchenko, V., Aushev, T., Bakich, A. M., Banas, E., Behari, S., Behera, P. K., Bondar, A., Bozek, A., Browder, T. E., Casey, B. C. K., ... Lu, R. S. (2002). Observation of B + → χ c0K + Physical review letters, 88(3), 031802/1-031802.