Polarization of Lambda and (Lambda)over-bar in 920 GeV fixed-target proton-nucleus collisions
文献类型：期刊论文
| 作者 | HERA-B Collaboration |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2006 |
| 卷号 | 638期号:5--6页码:415-421 |
| 关键词 | DETECTOR |
| 通讯作者 | Zoccoli, A (reprint author), Univ Bologna, Dipartmento Fis, I-40126 Bologna, Italy. |
| 英文摘要 | A measurement of the polarization of Lambda and (Lambda) over bar baryons produced in pC and pW collisions at root s = 41.6 GeV has been performed with the HERA-B spectrometer. The measurements cover the kinematic range of 0.6 GeV/c < p(perpendicular to) < 1.2 GeV/c in transverse momentum and -0.15 < x(F) < 0.01 in Feynman-x. The polarization results from the two different targets agree within the statistical error. In the combined data set, the largest deviation from zero, +0.054 +/- 0.029, is measured for x(F) less than or similar to -0.07. Zero polarization is expected at x(F) = 0 in the absence of nuclear effects. The polarization results for the A agree with a parametrization of previous measurements which were performed at positive x(F) values, where the A polarization is negative. Results of A polarization measurements are consistent with zero. (c) 2006 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000239103100005 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212689]  |
| 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. Polarization of Lambda and (Lambda)over-bar in 920 GeV fixed-target proton-nucleus collisions[J]. PHYSICS LETTERS B,2006,638(5--6):415-421. |
| APA | HERA-B Collaboration.(2006).Polarization of Lambda and (Lambda)over-bar in 920 GeV fixed-target proton-nucleus collisions.PHYSICS LETTERS B,638(5--6),415-421. |
| MLA | HERA-B Collaboration."Polarization of Lambda and (Lambda)over-bar in 920 GeV fixed-target proton-nucleus collisions".PHYSICS LETTERS B 638.5--6(2006):415-421. |
入库方式： OAI收割
来源：高能物理研究所
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