Observation of B-→p̄ΛD0 at Belle

P. Chen, M. Z. Wang, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, K. Belous, B. Bhuyan, A. Bozek, M. Bračko, T. E. Browder, M. C. Chang, P. Chang, Y. Chao, A. Chen, B. G. Cheon, I. S. ChoK. Cho, Y. Choi, J. Dalseno, M. Danilov, Z. Doleal, Z. Drásal, S. Eidelman, J. E. Fast, M. Feindt, V. Gaur, Y. M. Goh, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, P. Kapusta, N. Katayama, T. Kawasaki, H. Kichimi, C. Kiesling, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Koblitz, P. Krian, T. Kuhr, A. Kuzmin, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, H. Miyata, Y. Miyazaki, G. B. Mohanty, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Peters, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, S. Ryu, H. Sahoo, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, T. A. Shibata, J. G. Shiu, B. Shwartz, F. Simon, J. B. Singh, P. Smerkol, Y. S. Sohn, E. Solovieva, S. Stanič, M. Starič, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, Z. P. Zhang

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8 Citations (Scopus)

Abstract

We study B- meson decays to p̄ΛD( *)0 final states using a sample of 657×106BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The observed branching fraction for B-→p̄ΛD0 is (1.43-0.25+0.28±0. 18)×10-5 with a significance of 8.1 standard deviations, where the uncertainties are statistical and systematic, respectively. Most of the signal events have the p̄Λ mass peaking near threshold. No significant signal is observed for B-→p̄ΛD *0 and the corresponding upper limit on the branching fraction is 4.8×10-5 at the 90% confidence level.

Original languageEnglish
Article number071501
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume84
Issue number7
DOIs
Publication statusPublished - 2011 Oct 10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Chen, P., Wang, M. Z., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Bakich, A. M., Barberio, E., Belous, K., Bhuyan, B., Bozek, A., Bračko, M., Browder, T. E., Chang, M. C., Chang, P., Chao, Y., Chen, A., Cheon, B. G., ... Zhang, Z. P. (2011). Observation of B-→p̄ΛD0 at Belle. Physical Review D - Particles, Fields, Gravitation and Cosmology, 84(7), [071501]. https://doi.org/10.1103/PhysRevD.84.071501