Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC
文献类型：期刊论文
| 作者 | CMS Collaboration |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2011 |
| 卷号 | 84期号:11 |
| 关键词 | ELECTROWEAK PARAMETERS HADRON COLLISIONS PAIR PRODUCTION |
| 通讯作者 | Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia. |
| 英文摘要 | A multivariate likelihood method to measure electroweak couplings with the Drell-Yan process at the LHC is presented. The process is described by the dilepton rapidity, invariant mass, and decay angle distributions. The decay angle ambiguity due to the unknown assignment of the scattered constituent quark and antiquark to the two protons in a collision is resolved statistically using correlations between the observables. The method is applied to a sample of dimuon events from proton-proton collisions at root s = 7 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 1.1 fb(-1). From the dominant u (u) over bar, d (d) over bar -> gamma*/Z -> mu(-)mu(+) process, the effective weak mixing angle parameter is measured to be sin(2)theta(eff) = 0.2287 +/- 0.0020 (stat.) +/- 0.0025 (syst.) This result is consistent with measurements from other processes, as expected within the standard model. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000297936800001 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213151]  |
| 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. Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC[J]. PHYSICAL REVIEW D,2011,84(11). |
| APA | CMS Collaboration.(2011).Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC.PHYSICAL REVIEW D,84(11). |
| MLA | CMS Collaboration."Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC".PHYSICAL REVIEW D 84.11(2011). |
入库方式： OAI收割
来源：高能物理研究所
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