Principal Component Analysis of Event-by-Event Fluctuations

被引：65

作者：

Bhalerao, Rajeev S. ^{[1
]}

Ollitrault, Jean-Yves ^{[2
]}

Pal, Subrata ^{[3
]}

Teaney, Derek ^{[4
]}

机构：

[1] Tata Inst Fundamental Res, Dept Theoret Phys, Bombay 400005, Maharashtra, India

[2] CNRS, IPhT, Inst Phys Theor Saclay, URA2306, F-91191 Gif Sur Yvette, France

[3] Tata Inst Fundamental Res, Dept Nucl & Atom Phys, Bombay 400005, Maharashtra, India

[4] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 114卷 / 15期

基金：

欧洲研究理事会;

关键词：

RELATIVISTIC NUCLEAR COLLISIONS; ANISOTROPIC FLOW; ROOT-S(NN)=2.76 TEV;

D O I：

10.1103/PhysRevLett.114.152301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We apply principal component analysis to the study of event-by-event fluctuations in relativistic heavyion collisions. This method brings out all the information contained in two-particle correlations in a physically transparent way. We present a guide to the method, and apply it to multiplicity fluctuations and anisotropic flow, using ALICE data and simulated events. In particular, we study elliptic and triangular flow fluctuations as a function of transverse momentum and rapidity. This method reveals previously unknown subleading modes in both rapidity and transverse momentum for the momentum distribution as well as elliptic and triangular flows.

引用

页数：5

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