Direct observation of longitudinally polarised W +/- bosons
文献类型：期刊论文
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2000 |
| 卷号 | 474期号:1--2页码:194-204 |
| 关键词 | W-PAIR PRODUCTION L3 EXPERIMENT MONTE-CARLO DETECTOR LEP E+E-->W+W LEP2/NLC |
| 通讯作者 | Acciarri, M (reprint author), Ist Nazl Fis Nucl, Sezione Milano, I-20133 Milan, Italy. |
| 英文摘要 | The three different helicity states of W+/- bosons, produced in the reaction e(+)e(-) --> W+W- --> lvq (q) over bar are studied using leptonic and hadronic W decays at root s = 183 GeV and 189 GeV. The W polarisation is also measured as a function of the scattering angle between the W- and the direction of the e(-) beam. The analysis demonstrates that W bosons are produced with all three helicities, the longitudinal and the two transverse states. Combining the results from the two center-of-mass energies and with leptonic and hadronic W decays, the fraction of longitudinally polarised W+/- bosons is measured to be 0.261 +/- 0.016(syst.) +/- 0.016(syst.) in agreement with the expectation from the Standard Model. (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:000085387800029 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212024]  |
| 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 | . Direct observation of longitudinally polarised W +/- bosons[J]. PHYSICS LETTERS B,2000,474(1--2):194-204. |
| APA | (2000).Direct observation of longitudinally polarised W +/- bosons.PHYSICS LETTERS B,474(1--2),194-204. |
| MLA | "Direct observation of longitudinally polarised W +/- bosons".PHYSICS LETTERS B 474.1--2(2000):194-204. |
入库方式： OAI收割
来源：高能物理研究所
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