Phys. Rev. D
72,
011103(R)
(2005)
[6 pages]
Observation of B̅ 0→D0η′ and B̅ 0→D*0η′
J. Schümann et al. Belle Collaboration
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J. Schümann25, K. Abe8, K. Abe41, H. Aihara43, Y. Asano47, T. Aushev12, S. Bahinipati4, A. M. Bakich38, Y. Ban32, I. Bedny1, U. Bitenc13, I. Bizjak13, S. Blyth25, A. Bondar1, A. Bozek26, M. Bračko8,19,13, J. Brodzicka26, T. E. Browder7, M.-C. Chang25, P. Chang25, Y. Chao25, A. Chen23, W. T. Chen23, B. G. Cheon3, R. Chistov12, S.-K. Choi6, Y. Choi37, Y. K. Choi37, A. Chuvikov33, S. Cole38, J. Dalseno20, M. Dash48, S. Eidelman1, Y. Enari21, F. Fang7, N. Gabyshev1, A. Garmash33, T. Gershon8, G. Gokhroo39, B. Golob18,13, J. Haba8, N. C. Hastings8, K. Hayasaka21, H. Hayashii22, M. Hazumi8, L. Hinz17, T. Hokuue21, Y. Hoshi41, W.-S. Hou25, Y. B. Hsiung25, T. Iijima21, A. Imoto22, K. Inami21, Y. Iwasaki8, J. H. Kang49, J. S. Kang15, N. Katayama8, H. Kawai2, T. Kawasaki28, H. R. Khan44, H. Kichimi8, H. J. Kim16, S. M. Kim37, S. Korpar19,13, P. Krokovny1, C. C. Kuo23, A. Kuzmin1, Y.-J. Kwon49, J. S. Lange5, S. E. Lee36, S. H. Lee36, Y.-J. Lee25, T. Lesiak26, J. Li35, S.-W. Lin25, G. Majumder39, T. Matsumoto45, A. Matyja26, W. Mitaroff11, K. Miyabayashi22, H. Miyake30, H. Miyata28, R. Mizuk12, T. Nagamine42, Y. Nagasaka9, E. Nakano29, M. Nakao8, Z. Natkaniec26, S. Nishida8, O. Nitoh46, S. Ogawa40, T. Ohshima21, T. Okabe21, S. Okuno14, S. L. Olsen7, W. Ostrowicz26, P. Pakhlov12, C. W. Park37, N. Parslow38, R. Pestotnik13, L. E. Piilonen48, M. Rozanska26, H. Sagawa8, Y. Sakai8, N. Sato21, T. Schietinger17, O. Schneider17, H. Shibuya40, A. Somov4, N. Soni31, R. Stamen8, S. Stanič47,*, M. Starič13, K. Sumisawa30, T. Sumiyoshi45, S. Suzuki34, S. Y. Suzuki8, O. Tajima8, F. Takasaki8, N. Tamura28, M. Tanaka8, Y. Teramoto29, X. C. Tian32, T. Tsukamoto8, S. Uehara8, K. Ueno25, S. Uno8, G. Varner7, K. E. Varvell38, S. Villa17, C. H. Wang24, M.-Z. Wang25, M. Watanabe28, A. Yamaguchi42, Y. Yamashita27, M. Yamauchi8, Heyoung Yang36, Y. Yuan10, L. M. Zhang35, Z. P. Zhang35, V. Zhilich1, and D. Žontar18,13 (Belle Collaboration)
1Budker Institute of Nuclear Physics, Novosibirsk
2Chiba University, Chiba
3Chonnam National University, Kwangju
4University of Cincinnati, Cincinnati, Ohio 45221
5University of Frankfurt, Frankfurt
6Gyeongsang National University, Chinju
7University of Hawaii, Honolulu, Hawaii 96822
8High Energy Accelerator Research Organization (KEK), Tsukuba
9Hiroshima Institute of Technology, Hiroshima
10Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
11Institute of High Energy Physics, Vienna
12Institute for Theoretical and Experimental Physics, Moscow
13J. Stefan Institute, Ljubljana
14Kanagawa University, Yokohama
15Korea University, Seoul
16Kyungpook National University, Taegu
17Swiss Federal Institute of Technology of Lausanne, EPFL, Lausanne
18University of Ljubljana, Ljubljana
19University of Maribor, Maribor
20University of Melbourne, Victoria
21Nagoya University, Nagoya
22Nara Women’s University, Nara
23National Central University, Chung-li
24National United University, Miao Li
25Department of Physics, National Taiwan University, Taipei
26H. Niewodniczanski Institute of Nuclear Physics, Krakow
27Nihon Dental College, Niigata
28Niigata University, Niigata
29Osaka City University, Osaka
30Osaka University, Osaka
31Panjab University, Chandigarh
32Peking University, Beijing
33Princeton University, Princeton, New Jersey 08545
34Saga University, Saga
35University of Science and Technology of China, Hefei
36Seoul National University, Seoul
37Sungkyunkwan University, Suwon
38University of Sydney, Sydney NSW
39Tata Institute of Fundamental Research, Bombay
40Toho University, Funabashi
41Tohoku Gakuin University, Tagajo
42Tohoku University, Sendai
43Department of Physics, University of Tokyo, Tokyo
44Tokyo Institute of Technology, Tokyo
45Tokyo Metropolitan University, Tokyo
46Tokyo University of Agriculture and Technology, Tokyo
47University of Tsukuba, Tsukuba
48Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
49Yonsei University, Seoul
Received 7 January 2005; published 25 July 2005
We report the observation of B̅ 0→D0η′ and the first observation of B̅ 0→D*0η′, using 140 fb-1 of data collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e- collider. We find the branching fractions to be B(B̅ 0→D0η′)=[1.14±0.20(stat)+0.10-0.13(syst)]×10-4 and B(B̅ 0→D*0η′)=[1.21±0.34(stat)±0.22(syst)]×10-4 with significances including systematic uncertainties of 8.9 and 5.3 standard deviations, respectively.
© 2005 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.72.011103
DOI:
10.1103/PhysRevD.72.011103
*On leave from Nova Gorica Polytechnic, Nova Gorica.
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