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. BrodzickaP. 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

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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
Publication statusPublished - 2005 Jun 10

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Abe, K., Abe, K., Adachi, I., Aihara, H., Akatsu, M., Anipko, D., Asano, Y., Aushev, T., Aziz, T., Bahinipati, S., Bakich, A. M., Banerjee, S., Bedny, I., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., ... Nishida, S. (2005). Observation of the D1(2420)→Dπ+π- decays. Physical review letters, 94(22), [221805]. https://doi.org/10.1103/PhysRevLett.94.221805