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Observation of the D1(2420)→Dπ+π- decays

  • K. Abe
  • , K. Abe
  • , I. Adachi
  • , H. Aihara
  • , M. Akatsu
  • , D. Anipko
  • , Y. Asano
  • , T. Aushev
  • , T. Aziz
  • , S. Bahinipati
  • , A. M. Bakich
  • , S. Banerjee
  • , I. Bedny
  • , U. Bitenc
  • , I. Bizjak
  • , S. Blyth
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , J. Brodzicka
  • P. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, V. Eiges, F. Fang, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, J. Haba, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, S. M. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Krian, P. Krokovny, C. C. Kuo, A. Kuzmin, Y. J. Kwon, G. Leder, S. H. Lee, T. Lesiak, J. Li, S. W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyata, R. Mizuk, T. Nagamine, Y. Nagasaka, E. Nakano, Z. Natkaniec, S. Nishida
  • High Energy Accelerator Research Organization, Tsukuba
  • Tohoku Gakuin University
  • The University of Tokyo
  • Nagoya University
  • RAS - Budker Institute of Nuclear Physics
  • University of Tsukuba
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Tata Institute of Fundamental Research
  • University of Cincinnati
  • The University of Sydney
  • Jožef Stefan Institute
  • National Taiwan University
  • H. Niewodniczanski Institute of Nuclear Physics
  • University of Maribor
  • National Central University
  • Chonnam National University
  • Gyeongsang National University
  • Sungkyunkwan University
  • Princeton University
  • University of Melbourne
  • Virginia Polytechnic Institute and State University
  • University of Hawai'i at Mānoa
  • University of Ljubljana
  • Nara Women's University
  • Swiss Federal Institute of Technology Lausanne
  • Yonsei University
  • Korea University
  • Chiba University
  • Niigata University
  • Seoul National University
  • University of Science and Technology of China
  • Austrian Academy of Sciences
  • Tokyo Metropolitan University
  • Tohoku University
  • Hiroshima Institute of Technology
  • Osaka Metropolitan University

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

We report on the first observation of D10(2420)→D0π-π+ and D1+(2420)→D+π-π+ decays (where the contribution from the dominant known D1→D*π decay mode is excluded) in the B-→D10π- and B̄0→D1+π- decays, respectively. The observation is based on 15.2×107 BB̄ events collected with the Belle detector at the KEKB collider. We also set 90% confidence level upper limits for the branching fractions of the four following decays: B-→D10π-, D10→D *0π-π+, B̄0→D1+π-, D1+→D*+π-π+, B-→D2*0(2460)π-, D2*0→D*0π-π+, B̄0→D2*+(2460)π-, D2*+→D*+π-π+.

Original languageEnglish
Article number221805
JournalPhysical Review Letters
Volume94
Issue number22
DOIs
StatePublished - 10 Jun 2005

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