Observation of the decay B0 → D±D*∓ -: art. no. 122001

被引：8

作者：

Abe, K ^{[1
]}

Abe, R

Abe, T

Aihara, H

Akatsu, M

Asano, Y

Aulchenko, V

Aushev, T

Bakich, AM

Ban, Y

Banas, E

Bay, A

Bedny, I

Behera, PK

Bondar, A

Bozek, A

Brodzicka, J

Browder, TE

Chang, P

Chao, Y

Cheon, BG

Chistov, R

Choi, SK

Choi, Y

Danilov, M

Dong, LY

Drutskoy, A

Eidelman, S

Eiges, V

Enari, Y

Fujii, H

Fukunaga, C

Gabyshev, N

Garmash, A

Gershon, T

Golob, B

Gordon, A

Guo, R

Handa, F

Hara, T

Hayashii, H

Hazumi, M

Heenan, EM

Higuchi, T

Hinz, L

Hojo, T

Hokuue, T

Hoshi, Y

Hou, SR

Hou, WS

机构：

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

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

[3] Chiba Univ, Chiba, Japan

[4] Chuo Univ, Tokyo 112, Japan

[5] Univ Cincinnati, Cincinnati, OH 45221 USA

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

[7] Gyeongsang Natl Univ, Chinju, South Korea

[8] Univ Hawaii, Honolulu, HI 96822 USA

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

[10] Hiroshima Inst Technol, Hiroshima, Japan

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

[12] Inst High Energy Phys, Vienna, Austria

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

[14] Jozef Stefan Inst, Ljubljana, Slovenia

[15] Kanagawa Univ, Yokohama, Kanagawa, Japan

[16] Korea Univ, Seoul 136701, South Korea

[17] Kyoto Univ, Kyoto, Japan

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

[19] Univ Lausanne, Inst Phys Hautes Energies, Lausanne, Switzerland

[20] Univ Ljubljana, Ljubljana, Slovenia

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

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

[23] Nagoya Univ, Nagoya, Aichi, Japan

[24] Nara Womens Univ, Nara 630, Japan

[25] Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan

[26] Natl Lien Hoo Inst Technol, Miaoli, Taiwan

[27] Natl Taiwan Univ, Taipei 10764, Taiwan

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

[29] Nihon Dent Coll, Niigata, Japan

[30] Niigata Univ, Niigata, Japan

[31] Osaka City Univ, Osaka 558, Japan

[32] Osaka Univ, Osaka, Japan

[33] Panjab Univ, Chandigarh 160014, India

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

[35] Princeton Univ, Princeton, NJ 08544 USA

[36] RIKEN BNL Res Ctr, Brookhaven, NY USA

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

[38] Seoul Natl Univ, Seoul, South Korea

[39] Sungkyunkwan Univ, Suwon, South Korea

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

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

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

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

[44] Univ Tokyo, Tokyo, Japan

[45] Tokyo Inst Technol, Tokyo 152, Japan

[46] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.89.122001

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-0 --> D+/- D*(+/-) with the Belle detector at the KEKB e(+)e(-) Collider operated at the Y(4S) resonance. The sum of branching fractions B(B-0 --> D+D*(-)) + B(B-0 --> D- D*(+)) is measured to be (1.17 +/- 0.26(-0.25)(+0 22)) x 10(-3) using the full reconstruction method where both charmed mesons from BO decays are reconstructed. A consistent value [(1.48 +/- 0.38(-0.31)(+0.21)) x 10(-3)] is obtained using a partial reconstruction technique that uses only the slow pion from the D*(-) --> (D) over bar (0) pi(-) decay and a fully reconstructed D+ to reconstruct the B-0.

引用

页码：122001 / 122001

页数：6

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