Observation of a near-threshold ωJ/ψ mass enhancement in exclusive B→KωJ/ψ decays -: art. no. 182002

被引：205

作者：

Choi, SK ^{[1
]}

Olsen, SL

Abe, K

Adachi, I

Aihara, H

Asano, Y

Bahinipati, S

Bakich, AM

Ban, Y

Bedny, I

Bitenc, U

Bizjak, I

Bondar, A

Bozek, A

Bracko, M

Brodzicka, J

Browder, TE

Chang, MC

Chang, P

Chen, A

Chen, WT

Cheon, BG

Chistov, R

Choi, Y

Chuvikov, A

Cole, S

Dalseno, J

Danilov, M

Dash, M

Drutskoy, A

Eidelman, S

Enari, Y

Fang, F

Fratina, S

Gabyshev, N

Gershon, T

Gokhroo, G

Golob, B

Hara, T

Hastings, NC

Hayasaka, K

Hayashii, H

Hazumi, M

Hinz, L

Hokuue, T

Hoshi, Y

Hou, S

Hou, WS

Hsiung, YB

机构：

[1] Gyeongsang Natl Univ, Chinju, South Korea

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

[3] Chiba Univ, Chiba, Japan

[4] Chonnam Natl Univ, Kwangju, South Korea

[5] Univ Cincinnati, Cincinnati, OH 45221 USA

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

[7] Univ Hawaii, Honolulu, HI 96822 USA

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

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

[10] Inst High Energy Phys, Vienna, Austria

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

[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 Cent Univ, Chungli 32054, Taiwan

[23] Natl United Univ, Miaoli, Taiwan

[24] Natl Taiwan Univ, Dept Phys, Taipei, 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] Panjab Univ, Chandigarh 160014, India

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

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

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

[47] Yonsei Univ, Seoul 120749, South Korea

[48] Princeton Univ, Princeton, NJ 08545 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.94.182002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of a near-threshold enhancement in the omega J/psi invariant mass distribution for exclusive B -> K omega J/psi decays. The results are obtained from a 253 fb(-1) data sample that contains 275x10(6) B(B) over bar pairs that were collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. The statistical significance of the omega J/psi mass enhancement is estimated to be greater than 8 sigma.

引用

页数：6

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