Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS
文献类型：期刊论文
| 作者 | ATLAS collaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2014 |
| 卷号 | 112期号:20 |
| 关键词 | DARK-MATTER MAJORON MODELS LEPTON NUMBER PARTICLES VIOLATION DETECTOR MASSES LHC |
| 通讯作者 | Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany. |
| 英文摘要 | A search for evidence of invisible-particle decay modes of a Higgs boson produced in association with a Z boson at the Large Hadron Collider is presented. No deviation from the standard model expectation is observed in 4.5 fb(-1) (20.3 fb(-1)) of 7 (8) TeV pp collision data collected by the ATLAS experiment. Assuming the standard model rate for ZH production, an upper limit of 75%, at the 95% confidence level is set on the branching ratio to invisible-particle decay modes of the Higgs boson at a mass of 125.5 GeV. The limit on the branching ratio is also interpreted in terms of an upper limit on the allowed dark matter-nucleon scattering cross section within a Higgs-portal dark matter scenario. Within the constraints of such a scenario, the results presented in this Letter provide the strongest available limits for low-mass dark matter candidates. Limits are also set on an additional neutral Higgs boson, in the mass range 110 < m(H) < 400 GeV, produced in association with a Z boson and decaying to invisible particles. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000339554800003 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213745]  |
| 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 | ATLAS collaboration. Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS[J]. PHYSICAL REVIEW LETTERS,2014,112(20). |
| APA | ATLAS collaboration.(2014).Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS.PHYSICAL REVIEW LETTERS,112(20). |
| MLA | ATLAS collaboration."Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS".PHYSICAL REVIEW LETTERS 112.20(2014). |
入库方式： OAI收割
来源：高能物理研究所
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