Determination of |Vcb| using the semileptonic decay (B)over-bar0→D*+e-(ν)over-bar

被引：36

作者：

Abe, K ^{[1
]}

Abe, R

Abe, T

Adachi, I

Ahn, BS

Aihara, H

Akatsu, M

Asano, Y

Aso, T

Aulchenko, V

Aushev, T

Bakich, AM

Ban, Y

Banas, E

Behari, S

Behera, PK

Bondar, A

Bozek, A

Browder, TE

Casey, BCK

Chang, P

Chao, Y

Cheon, BG

Chistov, R

Choi, SK

Choi, Y

Dong, LY

Drutskoy, A

Eidelman, S

Eiges, V

Everton, CW

Fang, F

Fujii, H

Fukunaga, C

Fukushima, M

Gabyshev, N

Garmash, A

Gershon, T

Gordon, A

Guo, R

Haba, J

Hamasaki, H

Hanagaki, K

Handa, F

Hara, K

Hara, T

Hastings, NC

Hayashii, H

Hazumi, M

机构：

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

[2] Univ Hawaii, Honolulu, HI 96822 USA

[3] Gyeongsang Natl Univ, Chinju, South Korea

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

[5] Univ Cincinnati, Cincinnati, OH USA

[6] Chuo Univ, Tokyo 112, Japan

[7] Chiba Univ, Chiba, Japan

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

[9] Aomori Univ, Aomori, Japan

[10] Hiroshima Inst Technol, Hiroshima, Japan

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

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

[13] Inst High Energy Phys, Vienna, Austria

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

[15] Jozef Stefan Inst, Ljubljana, Slovenia

[16] Kanagawa Univ, Yokohama, Kanagawa, Japan

[17] Korea Univ, Seoul 136701, South Korea

[18] Kyoto Univ, Kyoto, Japan

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

[20] Univ Lausanne, IPHE, Lausanne, Switzerland

[21] Univ Ljubljana, Ljubljana, Slovenia

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

[23] Univ Melbourne, Melbourne, Vic, Australia

[24] Nagasaki Inst Appl Sci, Nagasaki, Japan

[25] Nagoya Univ, Nagoya, Aichi, Japan

[26] Nara Womens Univ, Nara 630, Japan

[27] Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan

[28] Natl Lien Ho Inst Technol, Miaoli, Taiwan

[29] Natl Taiwan Univ, Taipei 10764, Taiwan

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

[31] Nihon Dent Coll, Niigata, Japan

[32] Niigata Univ, Niigata, Japan

[33] Osaka City Univ, Osaka 558, Japan

[34] Osaka Univ, Osaka, Japan

[35] Panjab Univ, Chandigarh 160014, India

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

[37] Princeton Univ, Princeton, NJ 08544 USA

[38] Saga Univ, Saga 840, Japan

[39] Seoul Natl Univ, Seoul, South Korea

[40] Sungkyunkwan Univ, Suwon, South Korea

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

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

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

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

[45] Tokyo Inst Technol, Tokyo 152, Japan

[46] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

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

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

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

来源：

PHYSICS LETTERS B | 2002年 / 526卷 / 3-4期

基金：

澳大利亚研究理事会; 日本学术振兴会;

关键词：

D O I：

10.1016/S0370-2693(01)01476-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a measurement of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element \V-cb\ using a 10.2 fb(-1) data sample recorded at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) storage ring. By extrapolating the differential decay width of the (B) over bar (0) --> D*(+)e(-)(v) over bar decay to the kinematic limit at which the D*(+) is at rest with respect to the (B) over bar (0,) we extract the product of \V-cb\ with the normalization of the decay form factor F(1), \V-cb\F(1) = (3.54 +/- 0.19 +/- 0.18) x 10(-2), where the first error is statistical and the second is systematic. A value Of \V-cb\ = (3.88 +/- 0.21 +/- 0.20 +/- 0.19) x 10(-2) is obtained using a theoretical calculation of F(l), where the third error is due to the theoretical uncertainty in the value of F(l). The branching fraction B((B) over bar (0) --> D*(+)e(-) (v) over bar) is measured to be (4.59 +/- 0.23 +/- 0.40) x 10(-2). (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：247 / 257

页数：11

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