Single- and multi-photon events with missing energy in e(+)e(-) collisions at LEP
文献类型：期刊论文
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2004 |
| 卷号 | 587期号:1--2页码:16-32 |
| 关键词 | L3 EXPERIMENT MONTE-CARLO FINAL-STATES SUPERSYMMETRY BREAKING BHABHA SCATTERING LIGHT GRAVITINO ROOT-S COLLIDERS DIMENSIONS ELECTRON |
| 通讯作者 | Achard, P (reprint author), Univ Geneva, CH-1211 Geneva 4, Switzerland. |
| 英文摘要 | Single- and multi-photon events with missing energy are selected in 619 pb(-1) of data collected by the L3 detector at LEP at centre-of-mass energies between 189 and 209 GeV. The cross sections of the process e(+) e(-) nunugamma(gamma) are found to be in agreement with the Standard Model expectations, and the number of light neutrino species is determined, including lower energy data, to be N-nu = 2.98 +/- 0.05 +/- 0.04. Selection results are given in the form of tables which can be used to test future models involving single- and multi-photon signatures at LEP. These final states are also predicted by models with large extra dimensions and by several supersymmetric models. No evidence for such models is found. Among others, lower limits between 1.5 and 0.65 TeV are set. at 95% confidence level, on the new scale of gravity for the number of extra dimensions between 2 and 6. (C) 2004 Published by Elsevier B.V. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000220997400003 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212380]  |
| 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 | . Single- and multi-photon events with missing energy in e(+)e(-) collisions at LEP[J]. PHYSICS LETTERS B,2004,587(1--2):16-32. |
| APA | (2004).Single- and multi-photon events with missing energy in e(+)e(-) collisions at LEP.PHYSICS LETTERS B,587(1--2),16-32. |
| MLA | "Single- and multi-photon events with missing energy in e(+)e(-) collisions at LEP".PHYSICS LETTERS B 587.1--2(2004):16-32. |
入库方式： OAI收割
来源：高能物理研究所
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