Pseudorapidity dependence of long-range two-particle correlations in pPb collisions at 5.02 TeV with CMS

被引：1
作者：
Xu, Lingshan [1 ]
机构：
[1] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47906 USA
来源：
NUCLEAR PHYSICS A | 2014年 / 931卷
基金：
英国科学技术设施理事会;
关键词：
Dihadron correlation; pPb collision; ANGULAR-CORRELATIONS; SIDE;
D O I：
10.1016/j.nuclphysa.2014.10.019
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
CMS measurements of two-particle correlations of charged particles have previously been published for proton-proton (pp), proton-lead (pPb), and lead-lead (PbPb) systems. This analysis studies the pseudorapidity dependency of the two-particle correlations by restricting one of the particles in a narrow eta range. The near-side (Delta phi approximate to 0) correlation in high-multiplicity collisions is decomposed into a short-range jet-like component and a long-range ridge component in pseudorapidity. The jet-like correlations are subtracted, and the remaining ridge correlations are studied versus Delta eta. Furthermore, the Fourier coefficients of the two-particle correlations are extracted for high-multiplicity collisions, with and without subtraction of jet contributions approximated by the scaled low-multiplicity collision data. The eta dependence of the azimuthal anisotropy parameters is reported. (C) 2014 CERN. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1012 / 1016
页数：5
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