Polarization of Lambda and (Lambda)over-bar in 920 GeV fixed-target proton-nucleus collisions
HERA-B Collaboration
刊名PHYSICS LETTERS B
2006
卷号638期号:5--6页码:415-421
关键词DETECTOR
学科分类Physics
DOI10.1016/j.physletb.2006.05.040
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.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000239103100005
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被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212689
专题中国科学院高能物理研究所_实验物理中心_期刊论文
作者单位中国科学院高能物理研究所
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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.
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