Determination of A(FB)(b) using jet charge measurements in Z decays
文献类型：期刊论文
| 作者 | ALEPH Collaboration |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 1998 |
| 卷号 | 426期号:1--2页码:217-230 |
| 关键词 | LUND MONTE-CARLO E+E-PHYSICS FRAGMENTATION |
| 通讯作者 | Barate, R (reprint author), IN2P3, CNRS, Phys Particules Lab, F-74019 Annecy Le Vieux, France. |
| 英文摘要 | An improved measurement of the forward-backward asymmetry in Z --> b (b) over bar decays is presented, based on a sample of 4.1 million hadronic Z decays collected by ALEPH between 1991 and 1995. Data are analysed as a function of polar angle of the event axis and b purity. The event tagging efficiency and mean b-jet hemisphere charge are measured directly from data. From the measured forward-backward jet charge asymmetry, the b quark asymmetry at root s= m(Z) is determined to be: A(FB)(b) = 0.1017 +/- 0.0032(syst.) +/- 0.0032(syst.). In the context of the Standard Model this corresponds to a value of the effective weak mixing angle of sin(2) theta(W)(eff)= 0.23109 +/- 0.00096. (C) 1998 Published by 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:000074206500028 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/211918]  |
| 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. Determination of A(FB)(b) using jet charge measurements in Z decays[J]. PHYSICS LETTERS B,1998,426(1--2):217-230. |
| APA | ALEPH Collaboration.(1998).Determination of A(FB)(b) using jet charge measurements in Z decays.PHYSICS LETTERS B,426(1--2),217-230. |
| MLA | ALEPH Collaboration."Determination of A(FB)(b) using jet charge measurements in Z decays".PHYSICS LETTERS B 426.1--2(1998):217-230. |
入库方式： OAI收割
来源：高能物理研究所
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