Phys. Rev. D
77,
091101(R)
(2008)
[5 pages]
Measurement of the branching fraction and charge asymmetry of the decay B+→D+D̅ 0 and search for B0→D0D̅ 0
I. Adachi et al. Belle Collaboration
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I. Adachi7, H. Aihara36, K. Arinstein1, V. Aulchenko1, T. Aushev11,16, A. M. Bakich33, V. Balagura11, K. Belous10, V. Bhardwaj28, U. Bitenc12, S. Blyth21, A. Bondar1, A. Bozek23, M. Bračko12,17, J. Brodzicka7, Y. Chao22, A. Chen20, K.-F. Chen22, W. T. Chen20, B. G. Cheon5, R. Chistov11, I.-S. Cho41, S.-K. Choi4, Y. Choi32, J. Dalseno7, M. Dash40, S. Eidelman1, D. Epifanov1, S. Fratina12, H. Ha14, J. Haba7, T. Hara27, M. Hazumi7, D. Heffernan27, Y. Hoshi35, W.-S. Hou22, H. J. Hyun15, K. Inami18, A. Ishikawa29, H. Ishino37, M. Iwasaki36, Y. Iwasaki7, D. H. Kah15, N. Katayama7, H. Kawai2, T. Kawasaki25, H. Kichimi7, H. J. Kim15, S. K. Kim31, K. Kinoshita3, S. Korpar12,17, P. Krokovny7, C. C. Kuo20, Y. Kuroki27, A. Kuzmin1, Y.-J. Kwon41, J. S. Lee32, M. J. Lee31, S. E. Lee31, T. Lesiak23, S.-W. Lin22, C. Liu30, D. Liventsev11, F. Mandl9, S. McOnie33, T. Medvedeva11, W. Mitaroff9, K. Miyabayashi19, H. Miyata25, Y. Miyazaki18, R. Mizuk11, D. Mohapatra40, M. Nakao7, Z. Natkaniec23, S. Nishida7, O. Nitoh39, S. Ogawa34, T. Ohshima18, S. Okuno13, P. Pakhlov11, G. Pakhlova11, C. W. Park32, H. Park15, H. K. Park15, L. S. Peak33, L. E. Piilonen40, A. Poluektov1, H. Sahoo6, Y. Sakai7, O. Schneider16, J. Schümann7, C. Schwanda9, K. Senyo18, M. Shapkin10, H. Shibuya34, J.-G. Shiu22, A. Somov3, M. Starič12, T. Sumiyoshi38, M. Tanaka7, Y. Teramoto26, K. Trabelsi7, T. Tsuboyama7, S. Uehara7, K. Ueno22, Y. Unno5, S. Uno7, Y. Usov1, G. Varner6, K. E. Varvell33, K. Vervink16, P. Wang8, Y. Watanabe13, E. Won14, Y. Yamashita24, C. C. Zhang8, Z. P. Zhang30, V. Zhilich1, V. Zhulanov1, A. Zupanc12, and O. Zyukova1 (Belle Collaboration)
1Budker Institute of Nuclear Physics, Novosibirsk
2Chiba University, Chiba
3University of Cincinnati, Cincinnati, Ohio 45221
4Gyeongsang National University, Chinju
5Hanyang University, Seoul
6University of Hawaii, Honolulu, Hawaii 96822
7High Energy Accelerator Research Organization (KEK), Tsukuba
8Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
9Institute of High Energy Physics, Vienna
10Institute of High Energy Physics, Protvino
11Institute for Theoretical and Experimental Physics, Moscow
12J. Stefan Institute, Ljubljana
13Kanagawa University, Yokohama
14Korea University, Seoul
15Kyungpook National University, Taegu
16École Polytechnique Fédérale de Lausanne (EPFL), Lausanne
17University of Maribor, Maribor
18Nagoya University, Nagoya
19Nara Women’s University, Nara
20National Central University, Chung-li
21National United University, Miao Li
22Department of Physics, National Taiwan University, Taipei
23H. Niewodniczanski Institute of Nuclear Physics, Krakow
24Nippon Dental University, Niigata
25Niigata University, Niigata
26Osaka City University, Osaka
27Osaka University, Osaka
28Panjab University, Chandigarh
29Saga University, Saga
30University of Science and Technology of China, Hefei
31Seoul National University, Seoul
32Sungkyunkwan University, Suwon
33University of Sydney, Sydney, New South Wales
34Toho University, Funabashi
35Tohoku Gakuin University, Tagajo
36Department of Physics, University of Tokyo, Tokyo
37Tokyo Institute of Technology, Tokyo
38Tokyo Metropolitan University, Tokyo
39Tokyo University of Agriculture and Technology, Tokyo
40Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
41Yonsei University, Seoul
Received 21 February 2008; published 7 May 2008
We report an improved measurement of the B+→D+D̅ 0 and B0→D0D̅ 0 decays based on 657×106 BB̅ events collected with the Belle detector at KEKB. We measure the branching fraction and charge asymmetry for the B+→D+D̅ 0 decay: B(B+→D+D̅ 0)=(3.85±0.31±0.38)×10-4 and ACP(B+→D+D̅ 0)=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→D0D̅ 0 decay: B(B0→D0D̅ 0)<0.43×10-4 at 90% CL.
© 2008 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.77.091101
DOI:
10.1103/PhysRevD.77.091101
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