| Title | Direct measurements of the branching fractions for inclusive K-+/- and inclusive semileptonic decays of D+ and D-0 mesons |
| Authors | Ablikim, M. Bai, J. Z. Ban, Y. Cai, X. Chen, H. F. Chen, H. S. Chen, H. X. Chen, J. C. Chen, Jin Chen, Y. B. Chu, Y. P. Dai, Y. S. Diao, L. Y. Deng, Z. Y. Dong, Q. F. Du, S. X. Fang, J. Fang, S. S. Fu, C. D. Gao, C. S. Gao, Y. N. Gu, S. D. Gu, Y. T. Guo, Y. N. He, K. L. He, M. Heng, Y. K. Hou, J. Hu, H. M. Hu, J. H. Hu, T. Huang, X. T. Ji, X. B. Jiang, X. S. Jiang, X. Y. Jiao, J. B. Jin, D. P. Jin, S. Lai, Y. F. Li, G. Li, H. B. Li, J. Li, R. Y. Li, S. M. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li |
| Affiliation | Inst High Energy Phys, Beijing 100049, Peoples R China. CCAST, Beijing 100080, Peoples R China. Guangxi Normal Univ, Guilin 541004, Peoples R China. Guangxi Univ, Nanning 530004, Peoples R China. Henan Normal Univ, Xinxiang 453002, Peoples R China. Huazhong Normal Univ, Wuhan 430079, Peoples R China. Hunan Univ, Changsha 410082, Peoples R China. Jinan Univ, Jinan 250022, Peoples R China. Liaoning Univ, Shenyang 110036, Peoples R China. Nanjing Normal Univ, Nanjing 210097, Peoples R China. Nankai Univ, Tianjin 300071, Peoples R China. Peking Univ, Beijing 100871, Peoples R China. Shandong Univ, Jinan 250100, Peoples R China. Sichuan Univ, Chengdu 610064, Peoples R China. Tsing Hua Univ, Beijing 100084, Peoples R China. Univ Sci & Technol China, Hefei 230026, Peoples R China. Wuhan Univ, Wuhan 430072, Peoples R China. Zhejiang Univ, Hangzhou 310028, Peoples R China. |
| Keywords | CROSS-SECTIONS |
| Issue Date | 2007 |
| Publisher | physics letters b |
| Citation | PHYSICS LETTERS B.2007,658,(1-3),1-6. |
| Abstract | 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. |
| URI | http://hdl.handle.net/20.500.11897/250657 |
| ISSN | 0370-2693 |
| DOI | 10.1016/j.physletb.2007.10.052 |
| Indexed | SCI(E) |
| Appears in Collections: | 待认领 |
