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Title: Fluctuating flow angles and anisotropic flow measurements

Abstract

Event-by-event fluctuations in the initial density distributions of the fireballs created in relativistic heavy-ion collisions lead to event-by-event fluctuations of the final anisotropic flow angles, and density inhomogeneities in the initial state cause these flow angles to vary with the transverse momentum of the emitted particles. It is shown that these effects lead to characteristically different transverse momentum dependencies for anisotropic flow coefficients extracted from different experimental methods. Finally, these differences can be used to experimentally constrain flow angle fluctuations in the final state of heavy-ion collisions which, in turn, are sensitive to the initial-state density fluctuations and the shear viscosity of the expanding fireball medium.

Authors:
ORCiD logo [1];  [1];  [1]
  1. The Ohio State Univ., Columbus, OH (United States). Dept. of Physics
Publication Date:
Research Org.:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1604551
Alternate Identifier(s):
OSTI ID: 1103990
Grant/Contract Number:  
SC0004286; SC0004104
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 87; Journal Issue: 3; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Heinz, Ulrich, Qiu, Zhi, and Shen, Chun. Fluctuating flow angles and anisotropic flow measurements. United States: N. p., 2013. Web. doi:10.1103/PhysRevC.87.034913.
Heinz, Ulrich, Qiu, Zhi, & Shen, Chun. Fluctuating flow angles and anisotropic flow measurements. United States. doi:10.1103/PhysRevC.87.034913.
Heinz, Ulrich, Qiu, Zhi, and Shen, Chun. Fri . "Fluctuating flow angles and anisotropic flow measurements". United States. doi:10.1103/PhysRevC.87.034913. https://www.osti.gov/servlets/purl/1604551.
@article{osti_1604551,
title = {Fluctuating flow angles and anisotropic flow measurements},
author = {Heinz, Ulrich and Qiu, Zhi and Shen, Chun},
abstractNote = {Event-by-event fluctuations in the initial density distributions of the fireballs created in relativistic heavy-ion collisions lead to event-by-event fluctuations of the final anisotropic flow angles, and density inhomogeneities in the initial state cause these flow angles to vary with the transverse momentum of the emitted particles. It is shown that these effects lead to characteristically different transverse momentum dependencies for anisotropic flow coefficients extracted from different experimental methods. Finally, these differences can be used to experimentally constrain flow angle fluctuations in the final state of heavy-ion collisions which, in turn, are sensitive to the initial-state density fluctuations and the shear viscosity of the expanding fireball medium.},
doi = {10.1103/PhysRevC.87.034913},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 87,
place = {United States},
year = {2013},
month = {3}
}

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Cited by: 53 works
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