Direct measurements of the branching fractions for inclusive K± and inclusive semileptonic decays of D+ and D0 mesons

被引：4

作者：

Ablikim, M. ^{[1
]}

Bai, J. Z. ^{[1
]}

Ban, Y. ^{[11
]}

Cai, X. ^{[1
]}

Chen, H. F. ^{[15
]}

Chen, H. S. ^{[1
]}

Chen, H. X. ^{[1
]}

Chen, J. C. ^{[1
]}

Chen, Jin ^{[1
]}

Chen, Y. B. ^{[1
]}

Chu, Y. P. ^{[1
]}

Dai, Y. S. ^{[17
]}

Diao, L. Y. ^{[8
]}

Deng, Z. Y. ^{[1
]}

Dong, Q. F. ^{[14
]}

Du, S. X. ^{[1
]}

Fang, J. ^{[1
]}

Fang, S. S. ^{[1
,11
]}

Fu, C. D. ^{[14
]}

Gao, C. S. ^{[1
]}

Gao, Y. N. ^{[14
]}

Gu, S. D. ^{[1
]}

Gu, Y. T. ^{[4
]}

Guo, Y. N. ^{[1
]}

He, K. L. ^{[1
]}

He, M. ^{[12
]}

Heng, Y. K.

Hou, J. ^{[10
]}

Hu, H. M. ^{[1
]}

Hu, J. H. ^{[3
]}

Hu, T. ^{[1
]}

Huang, X. T. ^{[12
]}

Ji, X. B. ^{[1
]}

Jiang, X. S. ^{[1
]}

Jiang, X. Y. ^{[5
]}

Jiao, J. B. ^{[12
]}

Jin, D. P. ^{[1
]}

Jin, S. ^{[1
]}

Lai, Y. F. ^{[1
]}

Li, G. ^{[1
]}

Li, H. B. ^{[1
]}

Li, J. ^{[1
]}

Li, R. Y. ^{[1
]}

Li, S. M. ^{[1
]}

Li, W. D. ^{[1
]}

Li, W. G. ^{[1
]}

Li, X. L. ^{[1
]}

Li, X. N. ^{[1
]}

Li, X. Q. ^{[10
]}

Liang, Y. F.

机构：

[1] Inst High Energy Phys, Beijing 100049, Peoples R China

[2] CCAST, Beijing 100080, Peoples R China

[3] Guangxi Normal Univ, Guilin 541004, Peoples R China

[4] Guangxi Univ, Nanning 530004, Peoples R China

[5] Henan Normal Univ, Xinxiang 453002, Peoples R China

[6] Huazhong Normal Univ, Wuhan 430079, Peoples R China

[7] Hunan Univ, Changsha 410082, Peoples R China

[8] Liaoning Univ, Shenyang 110036, Peoples R China

[9] Nanjing Normal Univ, Nanjing 210097, Peoples R China

[10] Nankai Univ, Tianjin 300071, Peoples R China

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

[12] Shandong Univ, Jinan 250100, Peoples R China

[13] Sichuan Univ, Chengdu 610064, Peoples R China

[14] Tsing Hua Univ, Beijing 100084, Peoples R China

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

[16] Wuhan Univ, Wuhan 430072, Peoples R China

[17] Zhejiang Univ, Hangzhou 310028, Peoples R China

来源：

PHYSICS LETTERS B | 2007年 / 658卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.physletb.2007.10.052

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

With singly-tagged (D) over bar samples selected from the data collected at and around 3.773 GeV with the BESII detector at the BEPC collider, we have measured the branching fractions for the inclusive K-+/- decays of D+ and D-0 mesons, which are BF(D+ -> K- X) = (24.7 +/- 1.3 +/- 1.2)%, BF(D+ -> K+ X) = (6.1 +/- 0.9 +/- 0.4)%, BF(D-0 -> K- X) = (57.8 +/- 1.6 +/- 3.2)% and BF(D-0 -> K+ X) = (3.5 +/- 0.7 +/- 0.3)%, respectively. We have also measured the branching fractions for the inclusive semileptonic decays of D+ and D-0 mesons to be BF(D+ -> e(+) X) = (15.2 +/- 0.9 +/- 0.8)%, and BF(D-0 -> e(+) X) = (6.3 +/- 0.7 +/- 0.4)%. These yield the ratio of their partial widths to be Gamma(D+ -> e(+) X)/ Gamma(D-0 -> e(+) X) = 0.95 +/- 0.12 +/- 0.07. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

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