Anisotropic flow of thermal photons as a quark-gluon plasma viscometer
Abstract
We present state-of-the-art calculations of viscous photon emission from nuclear collisions at the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC). Fluctuating initial density profiles are evolved with event-by-event viscous hydrodynamics. Momentum spectra of thermal photons radiated by these explosively expanding fireballs and their pT-differential anisotropic flow coefficients vn (pT) are computed, both with and without accounting for viscous corrections to the standard thermal emission rates. Viscous corrections to the rates are found to have a larger effect on the v n coefficients than the viscous suppression of hydrodynamic flow anisotropies. The benefits of taking the ratio of elliptic to triangular flow, v2/v3, are discussed, and the space-time regions that contribute dominantly to the photon flow harmonics are identified. The directed flow v1 of thermal photons is predicted for the energies currently available at the RHIC and the LHC.
- Authors:
-
[2];
- McGill Univ., Montreal, QC (Canada); The Ohio State Univ., Columbus, OH (United States)
- The Ohio State Univ., Columbus, OH (United States)
- McGill Univ., Montreal, QC (Canada)
- Publication Date:
- Research Org.:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1604548
- Alternate Identifier(s):
- OSTI ID: 1180008
- Grant/Contract Number:
- SC0002486; SC0004104; SC0004286
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C, Nuclear Physics
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 2; 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
Shen, Chun, Heinz, Ulrich, Paquet, Jean-François, Kozlov, Igor, and Gale, Charles. Anisotropic flow of thermal photons as a quark-gluon plasma viscometer. United States: N. p., 2015.
Web. doi:10.1103/PhysRevC.91.024908.
Shen, Chun, Heinz, Ulrich, Paquet, Jean-François, Kozlov, Igor, & Gale, Charles. Anisotropic flow of thermal photons as a quark-gluon plasma viscometer. United States. https://doi.org/10.1103/PhysRevC.91.024908
Shen, Chun, Heinz, Ulrich, Paquet, Jean-François, Kozlov, Igor, and Gale, Charles. Thu .
"Anisotropic flow of thermal photons as a quark-gluon plasma viscometer". United States. https://doi.org/10.1103/PhysRevC.91.024908. https://www.osti.gov/servlets/purl/1604548.
@article{osti_1604548,
title = {Anisotropic flow of thermal photons as a quark-gluon plasma viscometer},
author = {Shen, Chun and Heinz, Ulrich and Paquet, Jean-François and Kozlov, Igor and Gale, Charles},
abstractNote = {We present state-of-the-art calculations of viscous photon emission from nuclear collisions at the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC). Fluctuating initial density profiles are evolved with event-by-event viscous hydrodynamics. Momentum spectra of thermal photons radiated by these explosively expanding fireballs and their pT-differential anisotropic flow coefficients vn (pT) are computed, both with and without accounting for viscous corrections to the standard thermal emission rates. Viscous corrections to the rates are found to have a larger effect on the v n coefficients than the viscous suppression of hydrodynamic flow anisotropies. The benefits of taking the ratio of elliptic to triangular flow, v2/v3, are discussed, and the space-time regions that contribute dominantly to the photon flow harmonics are identified. The directed flow v1 of thermal photons is predicted for the energies currently available at the RHIC and the LHC.},
doi = {10.1103/PhysRevC.91.024908},
journal = {Physical Review C, Nuclear Physics},
number = 2,
volume = 91,
place = {United States},
year = {Thu Feb 19 00:00:00 EST 2015},
month = {Thu Feb 19 00:00:00 EST 2015}
}
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Works referencing / citing this record:
Phenomenological modeling of the photon production rate from the QGP at finite quark chemical potential
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