Measurements of the structure of quark and gluon jets in hadronic Z decays
文献类型：期刊论文
| ; | |
| 作者 | ALEPH Collaboration |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 ; EUROPEAN PHYSICAL JOURNAL C
|
| 出版日期 | 2000 ; 2000 |
| 卷号 | 17期号:1页码:1-18 |
| 关键词 | E+E ANNIHILATION QCD MULTIPLICITIES PHYSICS 2-JET E+E ANNIHILATION QCD MULTIPLICITIES PHYSICS 2-JET |
| DOI | 10.1007/s100520000474 |
| 通讯作者 | Barate, R (reprint author), IN2P3, CNRS, Phys Particules Lab, F-74019 Annecy Le Vieux, France. ; Barate, R (reprint author), IN2P3, CNRS, Phys Particules Lab, F-74019 Annecy Le Vieux, France. |
| 英文摘要 | An experimental investigation of the structure of identified quark and gluon jets is presented. Observables related to both the global and internal structure of jets are measured; this allows for tests of QCD over a wide range of transverse momentum scales. The observables include distributions of jet-shape variables, the mean and standard deviation of the subjet multiplicity distribution and the fragmentation function for charged particles. The data are compared with predictions of perturbative QCD as well as QCD-based Monte Carlo models. In certain kinematic regions the measurements are sensitive mainly to perturbatively calculable effects, allowing for a test of QCD. The comparisons are also extended into regions where nonperturbative effects become large, and in this way the transition from hard to soft QCD is investigated. It is found that by including leading and next-to-leading logarithmic contributions in the QCD predictions, the agreement with the data can be extended to lower transverse momentum scales, especially fur gluon jets.; An experimental investigation of the structure of identified quark and gluon jets is presented. Observables related to both the global and internal structure of jets are measured; this allows for tests of QCD over a wide range of transverse momentum scales. The observables include distributions of jet-shape variables, the mean and standard deviation of the subjet multiplicity distribution and the fragmentation function for charged particles. The data are compared with predictions of perturbative QCD as well as QCD-based Monte Carlo models. In certain kinematic regions the measurements are sensitive mainly to perturbatively calculable effects, allowing for a test of QCD. The comparisons are also extended into regions where nonperturbative effects become large, and in this way the transition from hard to soft QCD is investigated. It is found that by including leading and next-to-leading logarithmic contributions in the QCD predictions, the agreement with the data can be extended to lower transverse momentum scales, especially fur gluon jets. |
| 学科主题 | Physics ; Physics |
| 类目[WOS] | Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000090006100001 ; WOS:000090006100001 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212081]  |
| 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 | ALEPH Collaboration. Measurements of the structure of quark and gluon jets in hadronic Z decays, Measurements of the structure of quark and gluon jets in hadronic Z decays[J]. EUROPEAN PHYSICAL JOURNAL C, EUROPEAN PHYSICAL JOURNAL C,2000, 2000,17, 17(1):1-18, 1-18. |
| APA | ALEPH Collaboration.(2000).Measurements of the structure of quark and gluon jets in hadronic Z decays.EUROPEAN PHYSICAL JOURNAL C,17(1),1-18. |
| MLA | ALEPH Collaboration."Measurements of the structure of quark and gluon jets in hadronic Z decays".EUROPEAN PHYSICAL JOURNAL C 17.1(2000):1-18. |
入库方式： OAI收割
来源：高能物理研究所
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