Measurement of the branching fraction and charge asymmetry of the decay B+→D+D̄0 and search for B0→D0D̄0

I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, K. Belous, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. CheonR. Chistov, I. S. Cho, S. K. Choi, Y. Choi, J. Dalseno, M. Dash, S. Eidelman, D. Epifanov, S. Fratina, H. Ha, J. Haba, T. Hara, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, M. Iwasaki, Y. Iwasaki, D. H. Kah, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, K. Kinoshita, S. Korpar, P. Krokovny, C. C. Kuo, Y. Kuroki, A. Kuzmin, Y. J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, S. W. Lin, C. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, L. S. Peak, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, J. Schümann, C. Schwanda, K. Senyo, M. Shapkin, H. Shibuya, J. G. Shiu, A. Somov, M. Starič, T. Sumiyoshi, M. Tanaka, Y. Teramoto, K. Trabelsi, T. Tsuboyama, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, P. Wang, Y. Watanabe, E. Won, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

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Abstract

We report an improved measurement of the B+→D+D̄0 and B0→D0D̄0 decays based on 657×106 BB̄ events collected with the Belle detector at KEKB. We measure the branching fraction and charge asymmetry for the B+→D+D̄0 decay: B(B+→D+D̄0)=(3. 85±0.31±0.38)×10-4 and ACP(B+→D+D̄0)=0. 00±0.08±0.02, where the first error is statistical and the second is systematic. We also set the upper limit for the B0→D0D̄0 decay: B(B0→D0D̄0)<0.43×10-4 at 90% CL.

Original languageEnglish
Article number091101
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume77
Issue number9
DOIs
StatePublished - 7 May 2008

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