Heavy flavor electron RAA and υ2 in event-by-event relativistic hydrodynamics

[摘要] In this work we investigate how event-by-event hydrodynamics fluctuations affect the nuclear suppression factor and elliptic flow of heavy flavor mesons and non-photonic electrons. We use a 2D+1 Lagrangian ideal hydrodynamic code [1, 2] on an event-by-event basis in order to compute local temperature and flow profiles. Using a strong coupling inspired energy loss parametrization [3] on top of the evolving space-time energy density distributions we are able to propagate the heavy quarks inside the medium until the freeze-out temperature is reached and a Pythia [4] modeling of hadronization takes place. The resulting D0and heavy-flavor electron yield is compared with recent experimental data for RAAand υ2from the STAR and PHENIX collaborations [5-7]. In addition we present preditions for the higher order Fourier harmonic coefficients υ3(pt) of heavy-flavor electrons at Rhic's √SNNcollisions.

[发布机构] Instituto de Física, Universidade de São Paulo, C.P. 66318, São Paulo, SP; 05315-970, Brazil^1;Centro de Ciências Naturais e Humanas, Universidade Federal Do ABC, Av. dos Estados 5001, Bairro Santa Terezina, Santo André, SP; 09210-508, Brazil^2;Department of Physics, Columbia University, 538 West 120th Street, New York; NY; 10027, United States^3

[关键词] Electron yield;Fourier harmonics;Freeze out temperature;Hydrodynamic codes;Local temperature;Parametrizations;Relativistic hydrodynamics;Strong coupling