Moving Forward to Constrain the Shear Viscosity of QCD Matter
Abstract
In this work, we demonstrate that measurements of rapidity differential anisotropic flow in heavy-ion collisions can constrain the temperature dependence of the shear viscosity to entropy density ratio η/s of QCD matter. Comparing results from hydrodynamic calculations with experimental data from the RHIC, we find evidence for a small η/s ≈ 0.04 in the QCD crossover region and a strong temperature dependence in the hadronic phase. A temperature independent η/s is disfavored by the data. We further show that measurements of the event-by-event flow as a function of rapidity can be used to independently constrain the initial state fluctuations in three dimensions and the temperature dependent transport properties of QCD matter.
- Authors:
-
- Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Department
- Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN BNL Research Center
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1336048
- Alternate Identifier(s):
- OSTI ID: 1254538
- Report Number(s):
- BNL-112315-2016-JA
Journal ID: ISSN 0031-9007; R&D Project: PO-3
- Grant/Contract Number:
- SC0012704; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 116; Journal Issue: 21; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Riken BNL Research Center
Citation Formats
Denicol, Gabriel, Monnai, Akihiko, and Schenke, Björn. Moving Forward to Constrain the Shear Viscosity of QCD Matter. United States: N. p., 2016.
Web. doi:10.1103/PhysRevLett.116.212301.
Denicol, Gabriel, Monnai, Akihiko, & Schenke, Björn. Moving Forward to Constrain the Shear Viscosity of QCD Matter. United States. https://doi.org/10.1103/PhysRevLett.116.212301
Denicol, Gabriel, Monnai, Akihiko, and Schenke, Björn. Thu .
"Moving Forward to Constrain the Shear Viscosity of QCD Matter". United States. https://doi.org/10.1103/PhysRevLett.116.212301. https://www.osti.gov/servlets/purl/1336048.
@article{osti_1336048,
title = {Moving Forward to Constrain the Shear Viscosity of QCD Matter},
author = {Denicol, Gabriel and Monnai, Akihiko and Schenke, Björn},
abstractNote = {In this work, we demonstrate that measurements of rapidity differential anisotropic flow in heavy-ion collisions can constrain the temperature dependence of the shear viscosity to entropy density ratio η/s of QCD matter. Comparing results from hydrodynamic calculations with experimental data from the RHIC, we find evidence for a small η/s ≈ 0.04 in the QCD crossover region and a strong temperature dependence in the hadronic phase. A temperature independent η/s is disfavored by the data. We further show that measurements of the event-by-event flow as a function of rapidity can be used to independently constrain the initial state fluctuations in three dimensions and the temperature dependent transport properties of QCD matter.},
doi = {10.1103/PhysRevLett.116.212301},
journal = {Physical Review Letters},
number = 21,
volume = 116,
place = {United States},
year = {Thu May 26 00:00:00 EDT 2016},
month = {Thu May 26 00:00:00 EDT 2016}
}
Web of Science
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