Observation of B+ → χc0K+

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+→Χc0K+. The statistical significance of the signal is 6σ when the Χc0→π+π- and Χc0→K*Kπ modes are combined. The measured branching fraction is Β(Β→Χc0K+) = (6.0-1.8+2.1 ± 1.1) × 10-4 which is comparable to those for the B+ → J/ψK+ and B+ → Χc1K+ decays. This provides evidence for a significant nonfactorizable contribution in B to charmonium decay processes.

Original languageEnglish
Article number031802
Pages (from-to)031802/1-031802
JournalPhysical review letters
Volume88
Issue number3
Publication statusPublished - 2002 Jan 21

ASJC Scopus subject areas

  • 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+ → χc0K+. Physical review letters, 88(3), 031802/1-031802. [031802].