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22-27 March 2015
Hotel do Bosque
Brazil/East timezone

Effects of time evolution and fluctuating initial conditions on heavy flavor electron $R_{AA}$ in event-by-event relativistic hydrodynamics

Not scheduled
3h 30m
Hotel do Bosque

Hotel do Bosque

Rodovia Mário Covas (Rio-Santos) BR - 101 Sul, Km 533, Angra dos Reis, RJ, Brazil
Poster Relativistic heavy-ion reactions - new data, analyses and models


Mr Caio Alves Garcia Prado (USP)


Central Au+Au collisions at RHIC exhibit a strong particle suppression when compared to p+p collisions. Anisotropic flow is also observed in experiments. The particle suppression is usually associated with jet quenching or energy loss of partons inside the quark-gluon-plasma (QGP) where the anisotropic flow might be due to lumps of high-density inside the medium. These fluctuations in initial conditions can cause considerable quark suppression at early stages of the collision evolution, furthermore the QGP dynamics might cause these high-density spots to expand differently from the rest of the plasma which can affect higher harmonic orders of anisotropic flow such as $v_3$. In this work we aim to investigate the effects caused by the medium formed in heavy ion collisions on the heavy quark dynamics using a 2D+1 Lagrangian ideal hydrodynamic code which is based on the Smoothed Particle Hydrodynamics (SPH) algorithm, following an event-by-event paradigm. We use an energy loss parametrization on top of the evolving space-time energy density distributions to propagate the quark inside the medium until it reaches the freeze-out temperature where they fragment and hadronize. The resulting mesons are forced to decay giving us the final electron $p_\text{T}$ distribution that can be compared with experimental data of electron spectrum $R_\text{AA}$ and $v_2$. The simulations are run for different centrality classes for both RHIC and LHC collision energies.

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