Observation of B+→ψ(3770)K -: art. no. 051803

被引：20

作者：

Chistov, R ^{[1
]}

Abe, K

Abe, T

Aihara, H

Akatsu, M

Asano, Y

Aushev, T

Bakich, AM

Ban, Y

Banerjee, S

Bay, A

Bedny, I

Bizjak, I

Bondar, A

Bozek, A

Bracko, M

Brodzicka, J

Browder, TE

Chao, Y

Chen, KF

Cheon, BG

Choi, Y

Choi, YK

Danilov, M

Dash, M

Dong, LY

Drutskoy, A

Eidelman, S

Eiges, V

Epifanov, D

Gabyshev, N

Garmash, A

Gershon, T

Golob, B

Guo, R

Haba, J

Hara, T

Hayashii, H

Hazumi, M

Hinz, L

Hokuue, T

Hoshi, Y

Hou, WS

Huang, HC

Iijima, T

Inami, K

Ishikawa, A

Iwasaki, H

Iwasaki, M

机构：

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

[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] Univ Hawaii, Honolulu, HI 96822 USA

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

[8] Hiroshima Inst Technol, Hiroshima, Japan

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

[10] Inst High Energy Phys, Vienna, Austria

[11] Jozef Stefan Inst, Ljubljana, Slovenia

[12] Kanagawa Univ, Yokohama, Kanagawa, Japan

[13] Korea Univ, Seoul 136701, South Korea

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

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

[16] Univ Ljubljana, Ljubljana, Slovenia

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

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

[19] Nagoya Univ, Nagoya, Aichi, Japan

[20] Nara Womens Univ, Nara 630, Japan

[21] Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan

[22] Natl United Univ, Miaoli, Taiwan

[23] Natl Taiwan Univ, Dept Phys, Taipei, 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] Saga Univ, Saga 840, Japan

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

[35] Seoul Natl Univ, Seoul, South Korea

[36] Sungkyunkwan Univ, Suwon, South Korea

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

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

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

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

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

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

[43] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 05期

基金：

日本学术振兴会; 澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevLett.93.051803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first observation of the decay B+-->psi(3770)K+ where the psi(3770) is reconstructed in the D-0(D) over bar (0) and D+D- decay channels. The obtained branching fraction is B(B+-->psi(3770)K+)=(0.48+/-0.11+/-0.07)x10(-3). We have measured the branching fraction for the decay B+-->D-0(D) over bar K-0(+) to be (1.17+/-0.21+/-0.15)x10(-3) and set a 90% confidence level upper limit of 0.90x10(-3) for the decay B+-->D+D-K+. We also present the results of a search for possible decays to D (D) over bar and D-0(D) over bar (0)pi(0) of the recently observed X(3872) particle. The analysis is based on 88 fb(-1) of data collected at the Y(4S) resonance by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

引用

页码：051803 / 1

页数：6

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