Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at root s=7 TeV
文献类型：期刊论文
| 作者 | CMS Collaboration |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2012 |
| 期号 | 11 |
| 关键词 | MEDIATED SUPERSYMMETRY BREAKING COLLIDERS |
| 通讯作者 | Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia. |
| 英文摘要 | A search is performed for long-lived neutral particles decaying into a photon and invisible particles. An example of such a signature is the decay of the lightest neutralino with nonzero lifetime into a gravitino and a photon in gauge-mediated supersymmetry, with the neutralino as the next-to-lightest supersymmetric particle and the gravitino as the lightest. The search uses events containing photons, missing transverse energy, and jets. The impact parameter of the photon relative to the beam-beam collision point can be reconstructed using converted photons. The method is sensitive to lifetimes of the order of 0.1 to ins. The data sample corresponds to an integrated luminosity of 2.23 fb(-1) in pp collisions at root s = 7 TeV, recorded in the first part of 2011 by the CMS experiment at the LHC. Cross-section limits are presented on pair production for such particles, each of which decays into a photon and invisible particles. The observed 95% confidence level limits vary between 0.11 and 0.21 pb, depending on the neutral particle lifetime. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000312484500041 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213405]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 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 | CMS Collaboration. Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at root s=7 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(11). |
| APA | CMS Collaboration.(2012).Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at root s=7 TeV.JOURNAL OF HIGH ENERGY PHYSICS(11). |
| MLA | CMS Collaboration."Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at root s=7 TeV".JOURNAL OF HIGH ENERGY PHYSICS .11(2012). |
入库方式： OAI收割
来源：高能物理研究所
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