Phys. Rev. D
71,
031502(R)
(2005)
[5 pages]
Improved measurements of the partial rate asymmetry in B→hh decays
Y. Chao et al. Belle Collaboration
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Y. Chao25, P. Chang25, K. Abe7, K. Abe40, H. Aihara42, Y. Asano46, T. Aushev11, S. Bahinipati4, A. M. Bakich37, Y. Ban32, I. Bedny1, U. Bitenc12, I. Bizjak12, S. Blyth25, A. Bondar1, M. Bračko12,19, J. Brodzicka26, T. E. Browder6, K.-F. Chen25, B. G. Cheon3, R. Chistov11, S.-K. Choi5, Y. Choi36, S. Cole37, M. Danilov11, M. Dash47, L. Y. Dong9, S. Eidelman1, V. Eiges11, S. Fratina12, N. Gabyshev1, T. Gershon7, G. Gokhroo38, B. Golob12,18, R. Guo23, J. Haba7, N. C. Hastings7, K. Hayasaka21, H. Hayashii22, M. Hazumi7, T. Higuchi7, L. Hinz17, T. Hokuue21, Y. Hoshi40, W.-S. Hou25, Y. B. Hsiung25,*, T. Iijima21, A. Imoto22, K. Inami21, A. Ishikawa7, R. Itoh7, H. Iwasaki7, Y. Iwasaki7, H. Kakuno42, J. H. Kang48, J. S. Kang14, N. Katayama7, H. Kawai2, T. Kawasaki28, H. R. Khan43, H. J. Kim16, J. H. Kim36, K. Kinoshita4, P. Koppenburg7, S. Korpar12,19, P. Krokovny1, Y.-J. Kwon48, G. Leder10, Y.-J. Lee25, T. Lesiak26, J. Li34, S.-W. Lin25, J. MacNaughton10, F. Mandl10, D. Marlow49, T. Matsumoto44, A. Matyja26, W. Mitaroff10, H. Miyake30, H. Miyata28, T. Mori43, T. Nagamine41, Y. Nagasaka8, E. Nakano29, M. Nakao7, H. Nakazawa7, Z. Natkaniec26, S. Nishida7, O. Nitoh45, S. Ogawa39, T. Ohshima21, T. Okabe21, S. Okuno13, S. L. Olsen6, W. Ostrowicz26, H. Ozaki7, H. Palka26, C. W. Park14, H. Park16, N. Parslow37, L. E. Piilonen47, M. Rozanska26, H. Sagawa7, Y. Sakai7, N. Sato21, O. Schneider17, J. Schümann25, A. J. Schwartz4, S. Semenov11, M. E. Sevior20, H. Shibuya39, B. Shwartz1, V. Sidorov1, A. Somov4, N. Soni31, R. Stamen7, S. Stanič46,†, M. Starič12, K. Sumisawa30, T. Sumiyoshi44, S. Suzuki33, O. Tajima41, F. Takasaki7, K. Tamai7, N. Tamura28, M. Tanaka7, G. N. Taylor20, Y. Teramoto29, K. Trabelsi6, T. Tsuboyama7, T. Tsukamoto7, S. Uehara7, T. Uglov11, K. Ueno25, Y. Unno2, S. Uno7, G. Varner6, K. E. Varvell37, C. C. Wang25, C. H. Wang24, M. Watanabe28, B. D. Yabsley47, Y. Yamada7, A. Yamaguchi41, Y. Yamashita27, M. Yamauchi7, Heyoung Yang35, J. Ying32, S. L. Zang9, J. Zhang7, Z. P. Zhang34, and D. Žontar12,18 (Belle Collaboration)
1Budker Institute of Nuclear Physics, Novosibirsk
2Chiba University, Chiba
3Chonnam National University, Kwangju
4University of Cincinnati, Cincinnati, Ohio 45221, USA
5Gyeongsang National University, Chinju
6University of Hawaii, Honolulu, Hawaii 96822, USA
7High Energy Accelerator Research Organization (KEK), Tsukuba
8Hiroshima Institute of Technology, Hiroshima
9Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
10Institute of High Energy Physics, Vienna
11Institute for Theoretical and Experimental Physics, Moscow
12J. Stefan Institute, Ljubljana
13Kanagawa University, Yokohama
14Korea University, Seoul
15Kyoto University, Kyoto
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 Kaohsiung Normal University, Kaohsiung
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
33Saga University, Saga
34University of Science and Technology of China, Hefei
35Seoul National University, Seoul
36Sungkyunkwan University, Suwon
37University of Sydney, Sydney NSW
38Tata Institute of Fundamental Research, Bombay
39Toho University, Funabashi
40Tohoku Gakuin University, Tagajo
41Tohoku University, Sendai
42Department of Physics, University of Tokyo, Tokyo
43Tokyo Institute of Technology, Tokyo
44Tokyo Metropolitan University, Tokyo
45Tokyo University of Agriculture and Technology, Tokyo
46University of Tsukuba, Tsukuba
47Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
48Yonsei University, Seoul
49Princeton University, Princeton, New Jersey 08545, USA
Received 14 July 2004; published 15 February 2005
We report improved measurements of the partial rate asymmetry (ACP) in B→hh decays with 140 fb-1 of data collected with the Belle detector at the KEKB e+e- collider. Here h stands for a charged or neutral pion or kaon and in total five decay modes are included: K∓π±, KS0π∓, K∓π0, π∓π0, and KS0π0. The flavor of the last decay mode is determined from the accompanying B meson. Using a data sample 4.7 times larger than that of our previous measurement, we find ACP(K∓π±)-0.088±0.035±0.013, 2.4σ from zero. Results for other decay modes are also presented.
© 2005 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.71.031502
DOI:
10.1103/PhysRevD.71.031502
PACS:
13.25.Hw, 11.30.Er, 12.15.Hh, 14.40.Nd
*On leave from Fermi National Accelerator Laboratory, Batavia, IL 60510. †On leave from Nova Gorica Polytechnic, Nova Gorica.
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