Measurement of branching fraction ratios and CP asymmetries in B±→DCPK± -: art. no. 051101

被引：21

作者：

Swain, SK ^{[1
]}

Browder, TE

Abe, K

Abe, T

Adachi, I

Aihara, H

Akatsu, M

Asano, Y

Aso, T

Aushev, T

Bahinipati, S

Bakich, AM

Ban, Y

Banas, E

Bay, A

Behera, PK

Bizjak, I

Bondar, A

Bozek, A

Bracko, M

Casey, BCK

Chang, MC

Chao, Y

Chen, KF

Cheon, BG

Chistov, R

Choi, SK

Choi, Y

Choi, YK

Danilov, M

Dong, LY

Dragic, J

Drutskoy, A

Eidelman, S

Eiges, V

Enari, Y

Fang, F

Garmash, A

Gershon, T

Golob, B

Guo, R

Haba, J

Hara, T

Hayashii, H

Hazumi, M

Higuchi, I

Higuchi, T

Hinz, L

Hokuue, T

Hoshi, Y

机构：

[1] Univ Hawaii, Honolulu, HI 96822 USA

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

[9] Hiroshima Inst Technol, Hiroshima, Japan

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

[11] Inst High Energy Phys, Vienna, Austria

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

[13] Jozef Stefan Inst, Ljubljana, Slovenia

[14] Kanagawa Univ, Yokohama, Kanagawa, Japan

[15] Korea Univ, Seoul 136701, South Korea

[16] Kyoto Univ, Kyoto, Japan

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

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

[19] Univ Ljubljana, Ljubljana, Slovenia

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

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

[22] Nagoya Univ, Nagoya, Aichi, Japan

[23] Nara Womens Univ, Nara 630, Japan

[24] Natl Kaohsiung Normal Univl, Kaohsiung, Taiwan

[25] Natl Lien Ho Inst Technol, Miao Li, Peoples R China

[26] Natl Taiwan Univ, Taipei 10764, Taiwan

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

[28] Nihon Dent Coll, Niigata, Japan

[29] Niigata Univ, Niigata, Japan

[30] Osaka City Univ, Osaka 558, Japan

[31] Osaka Univ, Osaka, Japan

[32] Panjab Univ, Chandigarh 160014, India

[33] Peking Univ, Beijing, Peoples R China

[34] Princeton Univ, Princeton, NJ 08545 USA

[35] RIKEN BNL Res Ctr, Upton, NY 11973 USA

[36] Saga Univ, Saga 840, Japan

[37] Seoul Natl Univ, Seoul, South Korea

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

[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 Gakuin Univ, Tagajo, Miyagi, Japan

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

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

[46] Tokyo Inst Technol, Tokyo 152, Japan

[47] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

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

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

来源：

PHYSICAL REVIEW D | 2003年 / 68卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.68.051101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report results on the decay B--->DCPK- and its charge conjugate using a data sample of 85.4x10(6) B (B) over bar pairs recorded at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) storage ring. Ratios of branching fractions of Cabibbo-suppressed to Cabibbo-favored processes are determined to be B(B--->(DK-)-K-0)/B(B--->D(0)pi(-))=0.077+/-0.005(stat)+/-0.006(syst), B(B--->D1K-)/B(B--->D(1)pi(-))=0.093+/-0.018(stat)+/-0.008(syst) and B(B--->D2K-)/B(B--->D(2)pi(-))=0.108+/-0.019(stat)+/-0.007(syst) where the indices 1 and 2 represent the CP=+1 and CP=-1 eigenstates of the D-0-(D) over bar (0) system, respectively. We find the partial-rate charge asymmetries for B--->DCPK- to be A(1)=0.06+/-0.19(stat)+/-0.04(syst) and A(2)=-0.19+/-0.17(stat)+/-0.05(syst).

引用

页数：6

共 50 条

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