Improved measurements of the branching fractions for B→Kπ, ππ, and K(K)over-bar decays -: art. no. 111102

被引：48

作者：

Chao, Y ^{[1
]}

Suzuki, K

Unno, Y

Abe, K

Abe, T

Adachi, I

Aihara, H

Akatsu, M

Asano, Y

Aso, T

Aulchenko, V

Aushev, T

Bakich, AM

Banerjee, S

Bizjak, I

Bondar, A

Bozek, A

Bracko, M

Browder, TE

Chang, P

Cheon, BG

Chistov, R

Choi, SK

Choi, Y

Choi, YK

Chuvikov, A

Cole, S

Danilov, M

Dash, M

Dong, LY

Dragic, J

Drutskoy, A

Eidelman, S

Eiges, V

Gabyshev, N

Garmash, A

Gershon, T

Golob, B

Gordon, A

Haba, J

Hara, T

Hazumi, M

Higuchi, I

Hokuue, T

Hoshi, Y

Hou, WS

Hsiung, YB

Huang, HC

Iijima, T

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

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

[3] Chiba Univ, Chiba, Japan

[4] Univ Cincinnati, Cincinnati, OH 45221 USA

[5] Goethe Univ Frankfurt, D-6000 Frankfurt, Germany

[6] Gyeongsang Natl Univ, Chinju, South Korea

[7] Univ Hawaii, Honolulu, HI 96822 USA

[8] High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan

[9] Hiroshima Inst Technol, Hiroshima, Japan

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

[11] Inst High Energy Phys, Vienna, Austria

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

[13] Jozef Stefan Inst, Ljubljana, Slovenia

[14] Kanagawa Univ, Yokohama, Kanagawa, Japan

[15] Korea Univ, Seoul 136701, South Korea

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

[17] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland

[18] Univ Ljubljana, Ljubljana, Slovenia

[19] Univ Maribor, SLO-2000 Maribor, Slovenia

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

[21] Nagoya Univ, Nagoya, Aichi, Japan

[22] Nara Womens Univ, Nara 630, Japan

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

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

[25] Nihon Dent Coll, Niigata, Japan

[26] Niigata Univ, Niigata, Japan

[27] Osaka City Univ, Osaka 558, Japan

[28] Osaka Univ, Osaka, Japan

[29] Panjab Univ, Chandigarh 160014, India

[30] Peking Univ, Beijing 100871, Peoples R China

[31] Princeton Univ, Princeton, NJ 08545 USA

[32] RIKEN BNL Res Ctr, Upton, NY 11973 USA

[33] Univ Sci & Technol China, Hefei 230026, Peoples R China

[34] Seoul Natl Univ, Seoul, South Korea

[35] Sungkyunkwan Univ, Suwon, South Korea

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

[37] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

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

[39] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan

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

[41] Univ Tokyo, Dept Phys, Tokyo 113, Japan

[42] Tokyo Inst Technol, Tokyo 152, Japan

[43] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

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

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

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

[48] Yokkaichi Univ, Yokaichi, Japan

[49] Yonsei Univ, Seoul 120749, South Korea

来源：

PHYSICAL REVIEW D | 2004年 / 69卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.69.111102

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report improved measurements of branching fractions for B-->Kpi, pi(+)pi(-), pi(+)pi(0), and K(K) over bar decays based on a data sample of 85.0 million B(B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. This data sample is almost three times larger than the sample previously used. We observe clear signals for B-->Kpi, pi(+)pi(-), and pi(+)pi(0) decays and set upper limits on B-->K(K) over bar decays. The results can be used to give model-dependent constraints on the CKM angle phi(3), as well as limits on the hadronic uncertainty in the time-dependent analysis of the angle phi(2).

引用

页数：6

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