Study of B0 → D(*)0π+π- decays

A. Satpathy, K. Abe, R. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, I. Bedny, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C.K. CaseyP. Chang, Y. Chao, K. F. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, M. Danilov, L. Y. Dong, S. Eidelman, V. Eiges, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, J. Haba, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, I. Higuchi, L. Hinz, T. Hokuue, W. S. Hou, H. C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, T. Kawasaki, T. Kichimi, D. W. Kim, H. J. Kim, Hyunwoo Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y. J. Kwon, S. H. Lee, J. Li, D. Liventsev, R. S. Lu, J. MacNaughton, G. Majumder, F. Mandl, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, S. Nishida

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27 Citations (Scopus)

Abstract

We report on a study of B 0 → D(*)0 π+π- decays using 29.1 fb-1 of e+e- annihilation data recorded at the γ(4S) resonance with the Belle detector at the KEKB storage ring. Making no assumptions about the intermediate mechanism, the branching fractions for B 0 → D0π+π- and B 0 → D*+π+π- are determined to be (8.0 ± 0.6 ± 1.5) x 10-4 and (6.2 ± 1.2 ± 1.8) × 10-4, respectively. An analysis of B 0 → D0π+π- candidates yields to the first observation of the color-suppressed hadronic decay B 0 → D0ρ0 with the branching fraction (2.9 ± 1.0 ± 0.4) × 10-4. We measure the ratio of branching fractions Β(B 0 → D0ρ0)/Β(B 0 → D0ω) = 1.6 ± 0.8.

Original languageEnglish
Pages (from-to)159-166
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume553
Issue number3-4
DOIs
Publication statusPublished - 2003 Feb 6

Keywords

  • Branching fraction
  • Color-suppressed B decays
  • Factorization

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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