Identified two-hadron correlations at STAR using Λ, Λ̄, and K0Short triggers with charged hadrons in Au + Au collisions at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\sqrt{s_{NN}}$\end{document} =200 GeV

被引：0
作者：
L. Gaillard
机构：
[1] University of Birmingham,School of Physics and Astronomy
来源：
The European Physical Journal C | 2007年 / 49卷 / 1期
关键词：
Time Projection Chamber; Primary Vertex; Charged Hadron; Sibling Correlation; Zero Degree Calorimeter;
D O I：
10.1140/epjc/s10052-006-0095-4
中图分类号：
学科分类号：
摘要：
Here we present initial studies of two-dimensional angular correlations of Λ, Λ̄, and K0Short triggers with unidentified charged hadrons in Au+Au collisions at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\sqrt{s_{NN}}$\end{document} =200 GeV measured by STAR. Distributions of pseudo-rapidity difference, Δη, and azimuthal separation, Δφ, are constructed containing structures observed in unidentified hadron correlations, including a jet peak at small Δη-Δφ accompanied by a flow-like ridge extended over Δη. These features are studied as a function of centrality via integrated yields and fitting to projections onto Δη and Δφ axes. Yields are found to be consistent with unidentified correlation analyses, and no clear distinction is observed between the three species.
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页码：51 / 55
页数：4
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