Measurement of the production of a W boson in association with a charm quark in pp collisions at root s=7 TeV with the ATLAS detector
文献类型：期刊论文
| 作者 | ATLAS Collaboration |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2014 |
| 期号 | 5页码:1-67 |
| 关键词 | Electroweak interaction Hadron-Hadron Scattering Charm physics |
| 英文摘要 | The production of a W boson in association with a single charm quark is studied using 4.6 fb(-1) of pp collision data at root s = 7 TeV collected with the ATLAS detector at the Large Hadron Collider. In events in which a W boson decays to an electron or muon, the charm quark is tagged either by its semileptonic decay to a muon or by the presence of a charmed meson. The integrated and differential cross sections as a function of the pseudorapidity of the lepton from the W-boson decay are measured. Results are compared to the predictions of next-to-leading-order QCD calculations obtained from various parton distribution function parameterisations. The ratio of the strange-to-down sea-quark distributions is determined to be 0.96(-0.30)(+0.26) at Q (2) = 1.9 GeV2, which supports the hypothesis of an SU(3)-symmetric composition of the light-quark sea. Additionally, the cross-section ratio sigma(W (+) +)/sigma(W (-) + c) is compared to the predictions obtained using parton distribution function parameterisations with different assumptions about the s-(s) over bar quark asymmetry. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000336799600001 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225090]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 推荐引用方式 GB/T 7714 | ATLAS Collaboration. Measurement of the production of a W boson in association with a charm quark in pp collisions at root s=7 TeV with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2014(5):1-67. |
| APA | ATLAS Collaboration.(2014).Measurement of the production of a W boson in association with a charm quark in pp collisions at root s=7 TeV with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS(5),1-67. |
| MLA | ATLAS Collaboration."Measurement of the production of a W boson in association with a charm quark in pp collisions at root s=7 TeV with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS .5(2014):1-67. |
入库方式： OAI收割
来源：高能物理研究所
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