Observation of a narrow charmoniumlike state in exclusive B±→K±π+π-J/ψ decays -: art. no. 262001

被引：1846

作者：

Choi, SK ^{[1
]}

Olsen, SL

Abe, K

Abe, T

Adachi, I

Ahn, BS

Aihara, H

Akai, K

Akatsu, M

Akemoto, M

Asano, Y

Aso, T

Aulchenko, V

Aushev, T

Bakich, AM

Ban, Y

Banerjee, S

Bondar, A

Bozek, A

Bracko, M

Brodzicka, J

Browder, TE

Chang, P

Chao, Y

Chen, KF

Cheon, BG

Chistov, R

Choi, Y

Choi, YK

Danilov, M

Dong, LY

Drutskoy, A

Eidelman, S

Eiges, V

Flanagan, J

Fukunaga, C

Furukawa, K

Gabyshev, N

Gershon, T

Golob, B

Guler, H

Guo, R

Hagner, C

Handa, F

Hara, T

Hastings, NC

Hayashii, H

Hazumi, M

Hinz, L

Hoshi, Y

机构：

[1] Gyeongsang Natl Univ, Chinju, South Korea

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

[3] Chiba Univ, Chiba, Japan

[4] Univ Cincinnati, Cincinnati, OH 45221 USA

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

[6] Univ Hawaii, Honolulu, HI 96822 USA

[7] High Energy Accelerator Res Org KEK, 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] 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] Univ Lausanne, Inst Phys Hautes Energies, Lausanne, Switzerland

[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 Lien Ho Inst Technol, 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 Inst Technol, Tokyo 152, Japan

[44] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

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

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

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

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

[50] Yokkaichi Univ, Yokaichi, Japan

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.91.262001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of a narrow charmoniumlike state produced in the exclusive decay process B+/--->K(+/-)pi(+)pi(-)J/psi. This state, which decays into pi(+)pi(-)J/psi, has a mass of 3872.0+/-0.6(stat)+/-0.5(syst) MeV, a value that is very near the M-D(0)+M-D*0 mass threshold. The results are based on an analysis of 152M B-(B) over bar events collected at the Y(4S) resonance in the Belle detector at the KEKB collider. The signal has a statistical significance that is in excess of 10sigma.

引用

页码：262001 / 262001

页数：6

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