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Study of intermediate two-body decays in over(B, ̄)0 → Σc (2455)0 over(p, ̄) π+

  • H. O. Kim
  • , H. Kichimi
  • , I. Adachi
  • , H. Aihara
  • , K. Arinstein
  • , V. Aulchenko
  • , T. Aushev
  • , A. M. Bakich
  • , V. Balagura
  • , I. Bedny
  • , U. Bitenc
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , T. E. Browder
  • , P. Chang
  • , Y. Chao
  • , B. G. Cheon
  • , R. Chistov
  • , I. S. Cho
  • Y. Choi, J. Dalseno, M. Dash, S. Eidelman, D. Epifanov, N. Gabyshev, H. Ha, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. J. Kim, Y. I. Kim, Y. J. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lee, M. J. Lee, T. Lesiak, S. W. Lin, D. Liventsev, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, C. W. Park, H. Park, H. K. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, J. G. Shiu, B. Shwartz, J. B. Singh, A. Somov, S. Stanič, M. Starič, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, A. Vinokurova, C. H. Wang, M. Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova
  • Kyungpook National University
  • High Energy Accelerator Research Organization (KEK)
  • University of Tokyo
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Institute for Theoretical and Experimental Physics
  • ENAC-IIC-GEL
  • University of Sydney
  • Department of Biochemistry and Molecular and Structural Biology
  • Institute for Nuclear Physics
  • University of Maribor
  • University of Hawaii
  • National Taiwan University
  • Hanyang University
  • Yonsei University
  • Sungkyunkwan University
  • Virginia Polytechnic Institute and State University
  • Korea University
  • Nagoya University
  • Osaka University
  • Tohoku Gakuin University
  • Saga University
  • Chiba University
  • Niigata University
  • The Graduate University for Advanced Studies
  • University of Ljubljana
  • Panjab University
  • Seoul National University
  • Tadeusz Kosciuszko Cracow University of Technology
  • Nara Women's University
  • National Central University
  • Tokyo University of Agriculture and Technology
  • Toho University
  • Kanagawa University
  • University of Melbourne
  • Kurchatov Institute
  • University of Cincinnati
  • University of Nova Gorica
  • Tokyo Metropolitan University
  • Osaka City University
  • National United University Taiwan
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • Nippon Dental University
  • University of Science and Technology of China

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

We present results of a detailed study of the three-body over(B, ̄)0 → Σc (2455)0 over(p, ̄) π+ decay. A significant enhancement of signal events is observed in the over(p, ̄) π+ invariant mass distribution near 1.5 GeV / c2 that is consistent with the presence of an intermediate baryonic resonance over(N, ̄)0, where over(N, ̄)0 is the over(N, ̄) (1440)0 P11 or over(N, ̄) (1535)0 S11 state, or an admixture of the two states. We measure the product B (over(B, ̄)0 → Σc (2455)0 over(N, ̄)0) × B (over(N, ̄)0 → over(p, ̄) π+) = (0.80 ± 0.15 (stat .) ± 0.14 (syst .) ± 0.21) × 10-4, where the last error is due to the uncertainty in B (Λc+ → p K- π+). The significance of the signal is 6.1 standard deviations. This analysis is based on a data sample of 357 fb-1, accumulated at the Υ{hooked} (4 S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider.

langue originaleAnglais
Pages (de - à)287-293
Nombre de pages7
journalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume669
Numéro de publication5
Les DOIs
étatPublié - 27 nov. 2008
Modification externeOui

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