Observation of Cabibbo suppressed B→D(*)K- decays at Belle -: art. no. 111801

被引：90

作者：

Abe, K ^{[1
]}

Adachi, I

Ahn, BS

Aihara, H

Akatsu, M

Alimonti, G

Asano, Y

Aso, T

Aulchenko, V

Aushev, T

Bakich, AM

Bartel, W

Behari, S

Behera, PK

Beiline, D

Bondar, A

Bozek, A

Browder, TE

Casey, BCK

Chang, P

Chao, Y

Cheon, BG

Choi, SK

Choi, Y

Eidelman, S

Enari, Y

Enomoto, R

Fang, F

Fujii, H

Fukunaga, C

Fukushima, M

Garmash, A

Gordon, A

Gotow, K

Guo, R

Haba, J

Hamasaki, H

Hanagaki, K

Handa, F

Hara, K

Hara, T

Hastings, NC

Hayashii, H

Hazumi, M

Heenan, EM

Higuchi, I

Higuchi, T

Hirano, H

Hojo, T

机构：

[1] Natl Lab High Energy Phys, KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, 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 USA

[6] DESY, Hamburg, Germany

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

[8] Gyeongsang Natl Univ, Chinju, South Korea

[9] Univ Hawaii, Honolulu, HI 96822 USA

[10] Univ Tokyo, Inst Cosm Ray Res, Tokyo, Japan

[11] Chinese Acad Med Sci, Inst High Energy Phys, Beijing 100037, Peoples R China

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

[13] Kanagawa Univ, Yokohama, Kanagawa, Japan

[14] Korea Univ, Seoul 136701, South Korea

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

[16] Kyoto Univ, Kyoto, Japan

[17] Univ Melbourne, Melbourne, Vic, Australia

[18] Nagasaki Inst Appl Sci, Nagasaki, Japan

[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, Miao Li, Peoples R China

[23] Natl Taiwan Univ, Taipei 10764, Taiwan

[24] Nihon Dent Coll, Niigata, Japan

[25] Niigata Univ, Niigata, Japan

[26] Osaka City Univ, Osaka 558, Japan

[27] Osaka Univ, Osaka, Japan

[28] Panjab Univ, Chandigarh 160014, India

[29] Princeton Univ, Princeton, NJ 08544 USA

[30] Saga Univ, Saga 840, Japan

[31] Seoul Natl Univ, Seoul, South Korea

[32] Sungkyunkwan Univ, Suwon, South Korea

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

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

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

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

[37] Univ Tokyo, Tokyo, Japan

[38] Tokyo Inst Technol, Tokyo 152, Japan

[39] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

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

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

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

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

[45] Yonsei Univ, Seoul 120749, South Korea

[46] Aomori Univ, Aomori, Japan

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.87.111801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report observations of the Cabibbo suppressed decays B --> (DK-)-K-(*) using a 10.4 fb(-1) data sample accumulated at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. We find that the ratios of Cabibbo suppressed to Cabibbo favored branching fractions are B(B- --> (DK-)-K-0)/B(B- --> D(0)pi (-)) = 0.079 +/- 0.009 +/- 0.006, B((B) over bar0 --> D+K-)/B((B) over bar0 --> D(+)pi (-)) = 0.068 +/- 0.015 +/- 0.007. B(B- --> (DK)-K-*0-)/B(B- --> D(*0)pi (-)) = 0.078 +/- 0.019 +/- 0.009, and B((B) over bar (0) --> D*+K-)/B((B) over bar (0) --> D(*+)pi (-)) = 0.074 +/- 0.015 +/- 0.006. These are the first observations of the B --> D+K-. (DK-)-K-*0, and D*+K- decay processes.

引用

页数：6

共 9 条

[1] First observation of the Cabibbo suppressed decay B+→(D)over-bar0K+ [J].

Athanas, M ;

Avery, P ;

Jones, CD ;

Lohner, M ;

Patton, S ;

Prescott, C ;

Yelton, J ;

Zheng, J ;

Brandenburg, G ;

Briere, RA ;

Ershov, A ;

Gao, YS ;

Kim, DYJ ;

Wilson, R ;

Yamamoto, H ;

Browder, TE ;

Li, Y ;

Rodriguez, JL ;

Bergfeld, T ;

Eisenstein, BI ;

Ernst, J ;

Gladding, GE ;

Gollin, GD ;

Hans, RM ;

Johnson, E ;

Karliner, I ;

Marsh, MA ;

Palmer, M ;

Selen, M ;

Thaler, JJ ;

Edwards, KW ;

Bellerive, A ;

Janicek, R ;

MacFarlane, DB ;

Patel, PM ;

Sadoff, AJ ;

Ammar, R ;

Baringer, P ;

Bean, A ;

Besson, D ;

Coppage, D ;

Darling, C ;

Davis, R ;

Kotov, S ;

Kravchenko, I ;

Kwak, N ;

Zhou, L ;

Anderson, S ;

Kubota, Y ;

Lee, SJ .

PHYSICAL REVIEW LETTERS, 1998, 80 (25) :5493-5497

[2] Enhanced CP violation with B->KD0((D)over-bar(0)) modes and extraction of the Cabibbo-Kobayashi-Maskawa angle gamma [J].

Atwood, D ;

Dunietz, I ;

Soni, A .

PHYSICAL REVIEW LETTERS, 1997, 78 (17) :3257-3260

[3]

*BELL COLL, 20004 KEK BELL COLL

[4] CP VIOLATION WITH SELF-TAGGING BD MODES [J].

DUNIETZ, I .

PHYSICS LETTERS B, 1991, 270 (01) :75-80

[5] OBSERVABLES FOR ANALYSIS OF EVENT SHAPES IN E+E- ANNIHILATION AND OTHER PROCESSES [J].

FOX, GC ;

WOLFRAM, S .

PHYSICAL REVIEW LETTERS, 1978, 41 (23) :1581-1585

[6]

FUNAKOSHI Y, 2000, P 2000 EUR PART ACC

[7] ON DETERMINING A WEAK PHASE FROM CHARGED B-DECAY ASYMMETRIES [J].

GRONAU, M ;

WYLER, D .

PHYSICS LETTERS B, 1991, 265 (1-2) :172-176

[8]

*KEKB B FACT, 1995, 957 KEKB B FACT

[9] CP-VIOLATION IN RENORMALIZABLE THEORY OF WEAK INTERACTION [J].

KOBAYASHI, M ;

MASKAWA, T .

PROGRESS OF THEORETICAL PHYSICS, 1973, 49 (02) :652-657

← 1 →