Measurement of the CP violation parameter sin2φ1 in Bd0 meson decays

被引：120

作者：

Abashian, A ^{[1
]}

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

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 12期

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

页码：2509 / 2514

页数：6

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