Fluctuating flow angles and anisotropic flow measurements

Heinz, Ulrich; Qiu, Zhi; Shen, Chun

doi:10.1103/PhysRevC.87.034913

Fluctuating flow angles and anisotropic flow measurements

Journal Article · Fri Mar 29 00:00:00 EDT 2013 · Physical Review C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.87.034913· OSTI ID:1604551

^[1]; Qiu, Zhi ^[2]; Shen, Chun ^[2]

The Ohio State Univ., Columbus, OH (United States). Dept. of Physics; The Ohio State University
The Ohio State Univ., Columbus, OH (United States). Dept. of Physics

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.

View Accepted Manuscript (DOE)

Research Organization:: The Ohio State Univ., Columbus, OH (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: SC0004104; SC0004286

OSTI ID:: 1604551

Alternate ID(s):: OSTI ID: 1103990

Journal Information:: Physical Review C, Nuclear Physics, Journal Name: Physical Review C, Nuclear Physics Journal Issue: 3 Vol. 87; ISSN 0556-2813; ISSN PRVCAN

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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