Observation of the decays B0 → K+π-π0 and B0 → p-K+

被引：31

作者：

Chang, P ^{[1
]}

Abe, K

Abe, T

Aihara, H

Asano, Y

Aulchenko, V

Aushev, T

Aziz, T

Bahinipati, S

Bakich, AM

Ban, Y

Bay, A

Bedny, I

Bitenc, U

Bizjak, I

Bondar, A

Bozek, A

Bracko, M

Brodzicka, J

Browder, TE

Chang, MC

Chao, Y

Cheon, BG

Chistov, R

Choi, SK

Choi, Y

Cole, S

Danilov, M

Dash, M

Dong, LY

Drutskoy, A

Eidelman, S

Eiges, V

Enari, Y

Fang, F

Fratina, S

Gabyshev, N

Garmash, A

Gershon, T

Gokhroo, G

Golob, B

Guo, R

Hastings, NC

Hayashii, H

Hazumi, M

Higuchi, T

Hinz, L

Hokuue, T

Hoshi, Y

机构：

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

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

[3] Chiba Univ, Chiba, Japan

[4] Chonnam Natl Univ, Kwangju 500757, South Korea

[5] Univ Cincinnati, Cincinnati, OH USA

[6] Gyeongsang Natl Univ, Chinju, South Korea

[7] Univ Hawaii, Honolulu, HI 96822 USA

[8] High Energy Accelerator Res Org, KEK, 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] Jozef Stefan Inst, Ljubljana, Slovenia

[13] Kanagawa Univ, Yokohama, Kanagawa, Japan

[14] Korea Univ, Seoul 136701, South Korea

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

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

[17] Univ Ljubljana, Ljubljana, Slovenia

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

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

[20] Nagoya Univ, Nagoya, Aichi, Japan

[21] Nara Womens Univ, Nara 630, Japan

[22] Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan

[23] Natl United Univ, Miaoli, Taiwan

[24] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan

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

[26] Nihon Dent Coll, Niigata, Japan

[27] Niigata Univ, Niigata, Japan

[28] Osaka City Univ, Osaka 558, Japan

[29] Osaka Univ, Osaka, Japan

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

[31] Princeton Univ, Princeton, NJ 08544 USA

[32] Saga Univ, Saga 840, Japan

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

[34] Seoul Natl Univ, Seoul, South Korea

[35] Sungkyunkwan Univ, Suwon 440746, 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 985, 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] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan

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

[47] Yonsei Univ, Seoul 120749, South Korea

来源：

PHYSICS LETTERS B | 2004年 / 599卷 / 3-4期

基金：

中国国家自然科学基金; 澳大利亚研究理事会; 日本学术振兴会;

关键词：

D O I：

10.1016/j.physletb.2004.07.063

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the observation of B-o decays the K(+)pi(-)pi(o) final state using a data sample of 78 fb(-1) collected by the Belle detector at the kekb e(+)e(-) collider. With no assumptions about intermediate states in the decay, the branching fraction is measured to be (36.6 (+4.2) (-4.3) +/- 3.0) X 10(-6). We also search for B decays to intermediate two-body states the same K(+)pi(-)pi(o) final state. Significant B signals are observed in the P(770)(-) K+ and K-* (892)(+) pi(-) channels, with branching fractions of (15.1 (+3.4+1.4+2.0)(-3.3-1.5-2.1)) X10(-)6 and (14.8 (+4.6+1.5+2.4)(-4.4-1.0-0.9)) X 10(-6), respectively. The first error is statistical, the second is systematic and the third is due to the largest possible interference. Contributions from other possible two-body states will be discussed. No C P asymmetry is found in the inclusive K+ pi(-)pi(o) or p(-)K(+) modes, and we set 90% confidence level bounds on the asymmetry of -0.12 < A(CP) < 0.26 and -0.18 < A(CP) < 0.64, respectively. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：148 / 158

页数：11

共 1 条

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Abe, K ;

Abe, R ;

Abe, K ;

Adachi, I ;

Ahn, BS ;

Ahn, HS ;

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Alexander, JP ;

Alimonti, G ;

An, Q ;

Aoki, K ;

Asai, 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 ;

Chang, YH ;

Chao, Y ;

Chen, HS ;

Chen, HF ;

Chen, YQ ;

Cheon, BG ;

Chidzik, S ;

Choi, S ;

Choi, Y ;

Dneprovsky, L ;

Doi, Y ;

Dong, LY ;

Dragic, J ;

Drutskoy, A ;

Eidelman, S ;

Enomoto, R ;

Everton, CW ;

Fang, F ;

Fujii, H ;

Fujimoto, K ;

Fujita, Y ;

Fukunaga, C .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (01) :117-232

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