https://scholars.lib.ntu.edu.tw/handle/123456789/418080| Title: | Observation of B → J/ψK<inf>1</inf>(1270) | Authors: | Kaneko, J. Hastings, N. C. SU-HUA LEE Igarashi, Y. Ishino, H. Kuzmin, A. Kang, J. H. Hara, K. Hazumi, M. Jackson, D. J. Hayashii, H. Aihara, H. Kapusta, P. Huang, H. C. Hou, W. S. Jones, M. Chang, P. Asano, Y. Jalocha, P. Kobayashi, S. Inami, K. Hoshi, Y. Kim, Heejong Haba, J. Kagan, R. Ahn, Byoung Sup Kim, H. J. Kim, Hyunwoo Fang, F. Kawamura, N. Bakich, A. M. Abe, K. Kinoshita, K. Kawai, H. Kwon, Y. J. Hojo, T. Aso, T. Browder, T. E. Cheon, B. G. RONG-SHYANG LU Katayama, N. Gordon, A. Lange, J. S. Itoh, R. Marlow, D. Ikeda, H. Hsu, S. C. Dragic, J. Eidelman, S. Kulasiri, R. Higuchi, I. Gotow, K. Drutskoy, A. Kakuno, H. Higuchi, T. Beiline, D. PAO-TI CHANG et al. |
Issue Date: | 27-Sep-2001 | Journal Volume: | 87 | Journal Issue: | 16 | Source: | Physical Review Letters | Abstract: | We report the first observation of the exclusive decay process B → J/ψK1(1270) using a sample of 1102M BB® meson pairs collected in the Belle detector at the KEKB asymmetric energy e+e− collider. We measure branching fractions of B[B0 → J/ψK01(1270)] =(1.30 ± 0.34 ± 0.32) × 10→3 and B[B+ J/ψK+1(1270)] = (1.80 ± 0.34 ± 0.39) × 10−3, where the first error is statistical and the second is systematic. These modes constitute approximately 15% of the total number of B → J/ψX decays. No evidence is seen for B → J/ψK1(1400) and we set an upper limit for this branching fraction. © 2001 American Physical Society. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/418080 | ISSN: | 00319007 | DOI: | 10.1103/PhysRevLett.87.161601 |
| Appears in Collections: | 物理學系 |
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