v4 from ideal and viscous hydrodynamic simulations of nuclear collisions at the BNL Relativistic Heavy Ion Collider RHIC and the CERN Large Hadron Collider LHC - Nuclear TheoryReportar como inadecuado




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Abstract: We compute v4-v2^2 in ideal and viscous hydrodynamics. We investigate itssensitivity to details of the hydrodynamic model and compare the results toexperimental data from RHIC. Whereas v2 has a significant sensitivity only toinitial eccentricity and viscosity while being insensitive to freeze outtemperature, we find that v4-v2^2 is quite insensitive to initialeccentricity. On the other hand, it can still be sensitive to shear viscosityin addition to freeze out temperature, although viscous effects do notuniversally increase v4-v2^2 as originally predicted. Consistent with data,we find no dependence on particle species. We also make a prediction forv4-v2^2 in heavy ion collisions at the LHC.



Autor: Matthew Luzum, Clément Gombeaud, Jean-Yves Ollitrault

Fuente: https://arxiv.org/







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