Measurement of chi(c1) and chi(c2) production with root s=7 TeV pp collisions at ATLAS
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 | 7 |
| 关键词 | HEAVY QUARKONIUM J-PSI HADRONIC PRODUCTION J/PSI PRODUCTION PROMPT CHI(C) UPSILON PHYSICS RATIO |
| 通讯作者 | Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany. |
| 英文摘要 | The prompt and non-prompt production cross-sections for the chi(c1) and chi(c2) charmonium states are measured in pp collisions at root s = 7TeV with the ATLAS detector at the LHC using 4.5 fb(-1) of integrated luminosity. The chi(c) states are reconstructed through the radiative decay chi c -> J/psi gamma ( with J/psi -> mu(+)mu(-)) where photons are reconstructed from gamma -> e(+)e(-) conversions. The production rate of the chi(c2) state relative to the chi(c1) state is measured for prompt and non-prompt chi(c) as a function of J/psi transverse momentum. The prompt chi(c) cross-sections are combined with existing measurements of prompt J/psi production to derive the fraction of prompt J/psi produced in feed-down from chi(c) decays. The fractions of chi(c1) and chi(c2) produced in b-hadron decays are also measured. |
| 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:000340391300001 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213753]  |
| 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. Measurement of chi(c1) and chi(c2) production with root s=7 TeV pp collisions at ATLAS[J]. JOURNAL OF HIGH ENERGY PHYSICS,2014(7). |
| APA | ATLAS collaboration.(2014).Measurement of chi(c1) and chi(c2) production with root s=7 TeV pp collisions at ATLAS.JOURNAL OF HIGH ENERGY PHYSICS(7). |
| MLA | ATLAS collaboration."Measurement of chi(c1) and chi(c2) production with root s=7 TeV pp collisions at ATLAS".JOURNAL OF HIGH ENERGY PHYSICS .7(2014). |
入库方式： OAI收割
来源：高能物理研究所
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