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Measurements of Elliptic and Triangular Flow in High-Multiplicity He-3 + Au Collisions at root s(NN)=200 GeV

Title
Measurements of Elliptic and Triangular Flow in High-Multiplicity He-3 + Au Collisions at root s(NN)=200 GeV
Author
김용균
Keywords
HEAVY-ION COLLISIONS; RANGE ANGULAR-CORRELATIONS; P-PB COLLISIONS; NUCLEAR COLLISIONS; ROOT-S-NN=200 GEV; COLLECTIVE FLOW; PHENIX; COLLABORATION; DETECTOR; TEV
Issue Date
2015-09
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v. 115, NO 14, Page. 1-9
Abstract
We present the first measurement of elliptic (v(2)) and triangular (v(3)) flow in high-multiplicity He-3 + Au collisions at root s(NN) = 200 GeV. Two-particle correlations, where the particles have a large separation in pseudorapidity, are compared in He-3 + Au and in p + p collisions and indicate that collective effects dominate the second and third Fourier components for the correlations observed in the He-3 + Au system. The collective behavior is quantified in terms of elliptic v(2) and triangular v(3) anisotropy coefficients measured with respect to their corresponding event planes. The v(2) values are comparable to those previously measured in d + Au collisions at the same nucleon-nucleon center-of-mass energy. Comparisons with various theoretical predictions are made, including to models where the hot spots created by the impact of the three He-3 nucleons on the Au nucleus expand hydrodynamically to generate the triangular flow. The agreement of these models with data may indicate the formation of low-viscosity quark-gluon plasma even in these small collision systems.
URI
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.142301http://hdl.handle.net/20.500.11754/27384
ISSN
0031-9007; 1079-7114
DOI
10.1103/PhysRevLett.115.142301
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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