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Measurement of the CP violation parameter sin2φ1 in Bd0 meson decays
被引：120
作者：
Abashian, A
[1
]
Abe, K
Abe, K
Adachi, I
Ahn, BS
Aihara, H
Akatsu, M
Alimonti, G
Aoki, K
Asai, K
Asai, M
Asano, Y
Aso, T
Aulchenko, V
Aushev, T
Bakich, AM
Banas, E
Behari, S
Behera, PK
Beiline, D
Bondar, A
Bozek, A
Browder, TE
Casey, BCK
Chang, P
Chao, Y
Cheon, BG
Choi, SK
Choi, Y
Doi, Y
Dragic, J
Drutskoy, A
Eidelman, S
Enari, Y
Enomoto, R
Everton, CW
Fang, F
Fujii, H
Fujimoto, K
Fujita, Y
Fukunaga, C
Fukushima, M
Garmash, A
Gordon, A
Gotow, K
Guler, H
Guo, R
Haba, J
Haji, T
Hamasaki, H
机构：
[1] Aomori Univ, Aomori, Japan
[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[3] Chiba Univ, Chiba, Japan
[4] Chuo Univ, Tokyo 112, Japan
[5] Univ Cincinnati, Cincinnati, OH USA
[6] Gyeongsang Natl Univ, Chinju, South Korea
[7] Univ Hawaii, Honolulu, HI 96822 USA
[8] KEK, High energy Accelerator Res Org, Tsukuba, Ibaraki, Japan
[9] Inst Technol, Hiroshima, Japan
[10] Univ Tokyo, Inst Cosm Ray Res, Tokyo, Japan
[11] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[12] Inst Theoret & Expt Phys, Moscow, Russia
[13] Kanagawa Univ, Yokohama, Kanagawa, Japan
[14] Korea Univ, Seoul 136701, South Korea
[15] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[16] Kyoto Univ, Kyoto, Japan
[17] Univ Melbourne, Melbourne, Vic, Australia
[18] Inst Appl Sci, Nagasaki, Japan
[19] Nagoya Univ, Nagoya, Aichi, Japan
[20] Nara Womens Univ, Nara 630, Japan
[21] Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan
[22] Natl Taiwan Univ, Taipei 10764, Taiwan
[23] Nihon Dent Coll, Niigata, Japan
[24] Niigata Univ, Niigata, Japan
[25] Osaka City Univ, Osaka 558, Japan
[26] Osaka Univ, Osaka, Japan
[27] Panjab Univ, Chandigarh 160014, India
[28] Princeton Univ, Princeton, NJ 08544 USA
[29] Saga Univ, Saga 840, Japan
[30] Seoul Natl Univ, Seoul, South Korea
[31] Sungkyunkwan Univ, Suwon, South Korea
[32] Univ Sydney, Sydney, NSW 2006, Australia
[33] Toho Univ, Funabashi, Chiba 274, Japan
[34] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan
[35] Tohoku Univ, Sendai, Miyagi 980, Japan
[36] Univ Tokyo, Tokyo, Japan
[37] Tokyo Inst Technol, Tokyo 152, Japan
[38] Tokyo Metropolitan Univ, Tokyo 158, Japan
[39] Tokyo Univ Agr & Technol, Tokyo, Japan
[40] Toyama Natl Coll Maritime Technol, Toyama, Japan
[41] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan
[42] Utkal Univ, Bhubaneswer 751004, Orissa, India
[43] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
[44] Yonsei Univ, Seoul 120749, South Korea
关键词：
D O I：
10.1103/PhysRevLett.86.2509
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present a measurement of the standard model CP violation parameter sin2 phi (1) (also known as sin2 beta) based on a 10.5 fb(-1) data sample collected at the Y (4S) resonance with the Belie detector at the KEKB asymmetric e(+)e(-) collider. One neutral B meson is reconstructed in the J/psi K (S), psi (2S)K (S), chi K-c1 (S), eta K-c (s), J/psi K (L), or J/psi pi (0) CP-eigenstate decay channel and the flavor of the accompanying B meson is identified from its charged particle decay products. From the asymmetry in the distribution of the time interval between the two B-meson decay paints, we determine sin2 phi (1) = 0.58(-0.34)(+0.32)(stat)(+0.09)(-0.10)(syst).
引用
收藏
页码：2509 / 2514
页数：6
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