Measurements of the b(b)over-bar production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP
文献类型：期刊论文
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2000 |
| 卷号 | 485期号:1--3页码:71-84 |
| 关键词 | STATE QED CORRECTIONS W-PAIR PRODUCTION JET-CHARGE MONTE-CARLO Z-DECAYS B-QUARK COLLISIONS LEP2/NLC LEPTONS BOSON |
| 通讯作者 | Acciarri, M (reprint author), Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy. |
| 英文摘要 | The measurements of R-b = sigma(e(+)e(-) --> b (b) over bar)/sigma(e(+)e(-) --> q (q) over bar) and of the b quark forward-backward charge asymmetry, A(fb)(b), at centre-of-mass energies above the Z pole an described. The measurement of R-b is performed at root s between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons, The measurement of A(fb)(b) is performed using the large statistics event sample collected at root s = 189 GeV with a lepton-tag analysis based on the selection of prompt muons and electrons. The results at root s = 189 GeV are R-b = 0.163 +/- 0.013 (stat.) +/- 0.005 (syst.), A(fb)(b) = 0.61 +/- 0.18 (stat.) +/- 0.09 (syst.). (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:000088239800010 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212054]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 GB/T 7714 | . Measurements of the b(b)over-bar production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP[J]. PHYSICS LETTERS B,2000,485(1--3):71-84. |
| APA | (2000).Measurements of the b(b)over-bar production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP.PHYSICS LETTERS B,485(1--3),71-84. |
| MLA | "Measurements of the b(b)over-bar production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP".PHYSICS LETTERS B 485.1--3(2000):71-84. |
入库方式： OAI收割
来源：高能物理研究所
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