Search for direct CP violation in B→K π decays -: art. no. 071101

被引：18

作者：

Abe, K ^{[1
]}

Abe, R

Adachi, I

Ahn, BS

Aihara, H

Akatsu, M

Asano, Y

Aso, T

Aulchenko, V

Aushev, T

Bakich, AM

Banas, E

Behari, S

Behera, PK

Bondar, A

Bozek, A

Browder, TE

Casey, BCK

Chang, P

Chao, Y

Chen, KF

Cheon, BG

Chistov, R

Choi, SK

Choi, Y

Dong, LY

Dragic, J

Drutskoy, A

Eidelman, S

Enomoto, R

Fang, F

Fujii, H

Fukunaga, C

Fukushima, M

Garmash, A

Gordon, A

Gotow, K

Guo, R

Haba, J

Hamasaki, H

Hanagaki, K

Handa, F

Hara, K

Hara, T

Hastings, NC

Hayashii, H

Hazumi, M

Heenan, EM

Higuchi, I

机构：

[1] High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[2] Aomori Univ, Aomori, Japan

[3] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[4] Chiba Univ, Chiba 2638522, Japan

[5] Chuo Univ, Tokyo 19203, Japan

[6] Univ Cincinnati, Cincinnati, OH 45030 USA

[7] Univ Frankfurt, D-60547 Frankfurt, Germany

[8] Gyeongsang Natl Univ, Chinju 660701, South Korea

[9] Univ Hawaii, Honolulu, HI 96822 USA

[10] Hiroshima Inst Technol, Hiroshima 7398526, Japan

[11] Univ Tokyo, Inst Cosm Ray Res, Tokyo 1138654, Japan

[12] Chinese Acad Sci, Inst High Energy Phys, Beijing 100037, Peoples R China

[13] Inst Theoret & Expt Phys, Moscow 119899, Russia

[14] Kanagawa Univ, Yokohama, Kanagawa 2310862, Japan

[15] Korea Univ, Seoul 136701, South Korea

[16] Kyoto Univ, Kyoto 6068501, Japan

[17] Kyungpook Natl Univ, Taegu 702701, South Korea

[18] Univ Melbourne, Parkville, Vic 3010, Australia

[19] Nagasaki Inst Appl Sci, Nagasaki 8528521, Japan

[20] Nagoya Univ, Nagoya, Aichi 4648601, Japan

[21] Nara Womens Univ, Nara 6308506, Japan

[22] Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan

[23] Natl Lien Ho Inst Technol, Miaoli, Taiwan

[24] Natl Taiwan Univ, Taipei 10764, Taiwan

[25] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[26] Nihon Dent Coll, Niigata 95121, Japan

[27] Niigata Univ, Niigata 95021, Japan

[28] Osaka City Univ, Suita, Osaka 5650871, Japan

[29] Osaka Univ, Suita, Osaka 5650871, Japan

[30] Panjab Univ, Chandigarh 160014, India

[31] Princeton Univ, Princeton, NJ 08544 USA

[32] Saga Univ, Saga 840, Japan

[33] Seoul Natl Univ, Seoul 136701, South Korea

[34] Sungkyunkwan Univ, Suwon, South Korea

[35] Univ Sydney, Sydney, NSW 2006, Australia

[36] Toho Univ, Chiba 2748510, Japan

[37] Tohoku Gakuin Univ, Tagajo, Miyagi 9808511, Japan

[38] Tohoku Univ, Sendai, Miyagi 9808511, Japan

[39] Univ Tokyo, Tokyo 1138654, Japan

[40] Tokyo Inst Technol, Tokyo 1138654, Japan

[41] Tokyo Metropolitan Univ, Tokyo 1138654, Japan

[42] Tokyo Univ Agr & Technol, Tokyo 1138654, Japan

[43] Toyama Natl Coll Maritime Technol, Toyama 9330293, Japan

[44] Univ Tsukuba, Tsukuba, Ibaraki 3058577, Japan

[45] Utkal Univ, Bhubaneswar 751004, Orissa, India

[46] Virginia Polytech Inst & State Univ, Blacksburg, VA 24060 USA

[47] Yokkaichi Univ, Yokkaichi, Mie 5128512, Japan

[48] Yonsei Univ, Seoul 136701, South Korea

来源：

PHYSICAL REVIEW D | 2001年 / 64卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.64.071101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We search for direct CP violation in flavor specific B -->K pi decays by measuring the rate asymmetry between charge conjugate modes. The search is performed on a data sample of 11.1 x 10(6) B(B) over bar events recorded on the Y(4S) resonance by the Belle experiment at KEKB. We measure 90% confidence intervals in the partial rate asymmetry A(CP) of - 0.25<A(CP)(K(<plus/minus>) pi (+/-)) <0.37, - 0.40<A(CP)(K(+/-) pi (0))<0.36, and -0.53 <A(CP)(K(0)pi (+/-))<0.82. By combining the K(<plus/minus>) pi (+/-) and K(+/-) pi (0) final states, we conclude that -0.22 <A(CP)(K(<plus/minus>)(pi (+/-) +pi (0)))<0.25 at the 90% confidence level.

引用

页数：5

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