Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5494183 | Nuclear Physics A | 2016 | 4 Pages |
Abstract
Anisotropic flow plays a crucial role in establishing the equation of state of the Quark Gluon Plasma. The results at RHIC and LHC have demonstrated that the matter created in heavy-ion collisions behaves as a nearly perfect fluid reflected in the low value of the shear viscosity over entropy density ratio (η/s). The higher flow harmonics are particularly sensitive to the value of η/s in hydrodynamic calculations. In this analysis, we present the first ALICE results on the pT differential v2, v3 and v4 for ϱ,K±,p(pâ¾) from the high statistics 2011 heavy-ion run. We investigate how these vn coefficients evolve with particle mass and centrality for the 0-1% and 20-30% centrality ranges. These new measurements aim at differentiating between models that use different initial conditions, constraining further the value of η/s and allowing to decouple the influence of the late hadronic stage from the hydrodynamic evolution of the system.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Naghmeh Mohammadi, ALICE Collaboration ALICE Collaboration,