Search for single top production in e(+)e(-) collisions at root s=189-202 GeV
文献类型：期刊论文
| 作者 | ALEPH Collaboration |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2000 |
| 卷号 | 494期号:1--2页码:33-45 |
| 关键词 | CHARM ASSOCIATED PRODUCTION STANDARD MODEL SYMMETRY-BREAKING QUARK PRODUCTION COLLIDERS ANNIHILATION DECAYS JETS MASS LEP |
| 通讯作者 | Barate, R (reprint author), CNRS, IN2P3, LAPP, F-74019 Annecy Le Vieux, France. |
| 英文摘要 | Single top production via flavour changing neutral currents in the reactions e(+)e(-) --> (t) over barc/u is searched for in approximately 411 pb(-1) of data collected by ALEPH at centre-of-mass energies in the range between 189 and 202 GeV. In total, 58 events are selected in the data to be compared with 50.3 expected from Standard Model backgrounds. No deviation from the Standard Model expectation is observed. Upper limits at 95% CL on single top production cross sections at roots = 189-202 GeV are derived. A model-dependent limit on the sum of branching ratios BR(t --> Zc) + BR(t --> Zu) < 17% is obtained. (C) 2000 Elsevier Science B.V. All rights reserved. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000165571500005 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212087]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | ALEPH Collaboration. Search for single top production in e(+)e(-) collisions at root s=189-202 GeV[J]. PHYSICS LETTERS B,2000,494(1--2):33-45. |
| APA | ALEPH Collaboration.(2000).Search for single top production in e(+)e(-) collisions at root s=189-202 GeV.PHYSICS LETTERS B,494(1--2),33-45. |
| MLA | ALEPH Collaboration."Search for single top production in e(+)e(-) collisions at root s=189-202 GeV".PHYSICS LETTERS B 494.1--2(2000):33-45. |
入库方式： OAI收割
来源：高能物理研究所
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