Suppression of anisotropic flow without viscosity Adam Takacs * University of Bergen (Norway) & Eotvos University (Hungary) Denes Molnar Purdue University (U.S.) Konrad Tywoniuk University of Bergen (Norway) Gergely G. Barnafoldi Wigner Institute (Hungary) * takacs.adam@wigner.mta.hu Supported by the 18-3 New National Excellence Program of the Ministry of Human Capacities and OTKA K120660. 1 COST Workshop Lund 28-02-2019
Outline 1. Motivation: relativistic hydrodynamics to understand heavy ion collisions 2. Particlization: basics, shortcomings, influence on observables 3. How much does f matter? 4. Results: 4-source model and 2+1D hydro 5. Conclusion and outlook 2 Adam Takacs COST Workshop Lund 28-02-2019
Motivation MADAI Collaboration For students : see Gabriel Denicol’s talk about hydro from Hot Quarks 2018 https://indico.cern.ch/event/7 03015/contributions/3095199/ 3 Adam Takacs COST Workshop Lund 28-02-2019
Motivation D. Molnar & P. Huovien, J.Phys. G 35 104125 (2008) K. Dusling, G.D. Moore, D. Teaney, Phys. Rev. C 81 , 034907 (2010) D. Molnar & Z. Wolff, Phys. Rev. C 95 , 024903 (2017) • Shear viscosity is sensitive to the Reprint: Phys. Rev. C 81 , 034907 (2010) 0.5 particlization method Ideal 0.4 Linear • There is no unique way to do the 0.3 v 2 (p T ) Pure Glue particlization 0.2 Quadratic 0.1 • Thermal equilibrium is an assumption 0 0 0.5 1 1.5 2 2.5 3 3.5 4 p T [GeV] 4 Adam Takacs COST Workshop Lund 28-02-2019
Motivation D. Molnar & P. Huovien, J.Phys. G 35 104125 (2008) K. Dusling, G.D. Moore, D. Teaney, Phys. Rev. C 81 , 034907 (2010) D. Molnar & Z. Wolff, Phys. Rev. C 95 , 024903 (2017) • Shear viscosity is sensitive to the way of Reprint: Phys. Rev. C 81 , 034907 (2010) 0.5 particlization Ideal 0.4 Linear • There is no unique way to do the 0.3 v 2 (p T ) Pure Glue particlization 0.2 Quadratic 0.1 • Thermal equilibrium is an assumption 0 0 0.5 1 1.5 2 2.5 3 3.5 4 p T [GeV] Questions: 1. How sensitive is ideal hydro? 2. Is thermal equilibrium a legitimate assumption? 5 Adam Takacs COST Workshop Lund 28-02-2019
Particlization How is it done? 6 Adam Takacs COST Workshop Lund 28-02-2019
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