Kinematic distributions and nuclear effects of J/psi production in 920 GeV fixed-target proton-nucleus collisions
文献类型：期刊论文
| 作者 | HERA-B Collaboration |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2009 |
| 卷号 | 60期号:4页码:525-542 |
| 关键词 | HERA-B EXPERIMENT PARTON DISTRIBUTIONS MUON DETECTOR ELECTROMAGNETIC CALORIMETER ENERGY-LOSS SYSTEM SCATTERING OPERATION PERFORMANCE TRACKER |
| 通讯作者 | zur Nedden, M (reprint author), NIKHEF, NL-1009 DB Amsterdam, Netherlands. |
| 英文摘要 | Measurements of the kinematic distributions of J/psi mesons produced in p-C, p-Ti and p-W collisions at root s = 41.6 GeV in the Feynman-x region -0.34 < x(F) < 0.14 and for transverse momentum up to p(T) = 5.4 GeV/c are presented. The xF and pT dependencies of the nuclear suppression parameter, a, are also given. The results are based on 2.4 x 10(5) J/psi mesons reconstructed in both the e(+) e(-) and mu(+) mu(-) decay channels. The data have been collected by the HERA-B experiment at the HERA proton ring of the DESY laboratory. The measurement explores the negative region of xF for the first time. The average value of a in the measured xF region is 0.981 +/- 0.015. The data suggest that the strong nuclear suppression of J/psi production previously observed at high xF turns into an enhancement at negative x(F) |
| 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:000265215100002 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212896]  |
| 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 | HERA-B Collaboration. Kinematic distributions and nuclear effects of J/psi production in 920 GeV fixed-target proton-nucleus collisions[J]. EUROPEAN PHYSICAL JOURNAL C,2009,60(4):525-542. |
| APA | HERA-B Collaboration.(2009).Kinematic distributions and nuclear effects of J/psi production in 920 GeV fixed-target proton-nucleus collisions.EUROPEAN PHYSICAL JOURNAL C,60(4),525-542. |
| MLA | HERA-B Collaboration."Kinematic distributions and nuclear effects of J/psi production in 920 GeV fixed-target proton-nucleus collisions".EUROPEAN PHYSICAL JOURNAL C 60.4(2009):525-542. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。