Measurement of the branching fraction for B → η′K and search for B → η′π+

被引：57

作者：

Abe, K ^{[1
]}

Abe, R

Adachi, I

Ahn, BS

Aihara, H

Akatsu, M

Asano, Y

Aso, T

Aulchenko, V

Bakich, AM

Banas, E

Behari, S

Behera, PK

Beiline, D

Bondar, A

Bozek, A

Browder, TE

Casey, BCK

Chang, P

Chao, Y

Cheon, BG

Chistov, R

Choi, SK

Choi, Y

Dong, LY

Dragic, J

Eidelman, S

Enari, Y

Fang, F

Fujii, H

Fukunaga, C

Fukushima, M

Gabyshev, N

Garmash, A

Gershon, T

Gordon, A

Gotow, K

Guo, R

Haba, J

Hamasaki, H

Hara, K

Hara, T

Hastings, NC

Hayashii, H

Hazumi, M

Heenan, EM

Higuchi, I

Higuchi, T

Hirano, H

机构：

[1] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki, 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 45221 USA

[6] Univ Frankfurt, D-6000 Frankfurt, Germany

[7] Gyeongsang Natl Univ, Chinju, South Korea

[8] Univ Hawaii, Honolulu, HI 96822 USA

[9] Aomori Univ, Aomori, Japan

[10] Hiroshima Inst Technol, Hiroshima, Japan

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

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

[13] Inst High Energy Phys, Vienna, Austria

[14] Inst Theoret & Expt Phys, Moscow 117259, Russia

[15] Kanagawa Univ, Yokohama, Kanagawa, Japan

[16] Korea Univ, Seoul 136701, South Korea

[17] Kyoto Univ, Kyoto, Japan

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

[19] Univ Melbourne, Parkville, Vic 3052, Australia

[20] Nagasaki Inst Appl Sci, Nagasaki, Japan

[21] Nagoya Univ, Nagoya, Aichi, Japan

[22] Nara Womens Univ, Nara 630, Japan

[23] Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan

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

[25] Natl Taiwan Univ, Taipei 10764, Taiwan

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

[27] Nihon Dent Coll, Niigata, Japan

[28] Niigata Univ, Niigata, Japan

[29] Osaka City Univ, Osaka 558, Japan

[30] Osaka Univ, Osaka, Japan

[31] Panjab Univ, Chandigarh 160014, India

[32] Princeton Univ, Princeton, NJ 08544 USA

[33] Saga Univ, Saga 840, Japan

[34] Seoul Natl Univ, Seoul 151, South Korea

[35] Sungkyunkwan Univ, Suwon 440746, South Korea

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

[37] Toho Univ, Funabashi, Chiba 274, Japan

[38] Tohoku Gakuin Univ, Tagajo, Miyagi 985, Japan

[39] Tohoku Univ, Sendai, Miyagi 980, Japan

[40] Univ Tokyo, Tokyo, Japan

[41] Tokyo Inst Technol, Tokyo 152, Japan

[42] Tokyo Metropolitan Univ, Tokyo 158, Japan

[43] Tokyo Univ Agr & Technol, Tokyo, Japan

[44] Toyama Natl Coll Maritime Technol, Toyama, Japan

[45] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan

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

[47] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[48] Yokkaichi Univ, Yokaichi, Japan

[49] Yonsei Univ, Seoul 120749, South Korea

来源：

PHYSICS LETTERS B | 2001年 / 517卷 / 3-4期

基金：

日本学术振兴会; 澳大利亚研究理事会;

关键词：

D O I：

10.1016/S0370-2693(01)01025-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report measurements for two-body charmless hadronic B decays with an eta ' meson in the final state. Using 11.1 X 10(6) B (B) over bar pairs collected with the Belle detector, we find BF(B(+) --> eta 'K(+)) = (79(-11)(+12) +/- 9) X 10(-6) and BF(B(0) --> eta 'K(0)) = (55(-16)(+19) +/- 8) X 10(-6), where the first and second errors are statistical and systematic, respectively. No signal is observed in the mode B+ q'7r+, and we set a90% confidence level upper limit of BF(B+ - q'7r+) < 7 x 10-6. The CP asymmetry in B(<plus/minus>) --> eta 'K(+/-) decays is investigated and a limit at 90% confidence level of -0.20 < A(CP) < 0.32 is obtained. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：309 / 318

页数：10

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