Speaker
Dr
Jacquelyn Noronha-Hostler
(University of Sao Paulo)
Description
Shear and bulk viscosity effects on the collective flow harmonics in heavy ion
collisions are investigated, on an event by event basis, using a newly
developed 2+1 Lagrangian hydrodynamic code named v-USPhydro which implements
the Smoothed Particle Hydrodynamics (SPH) algorithm for viscous
hydrodynamics. A new formula for the bulk viscous corrections present in the
distribution function at freeze-out is derived starting from the Boltzmann
equation for multi-hadron species. Bulk viscosity is shown to enhance the
collective flow Fourier coefficients from $v_2(p_T)$ to $v_5(p_T)$ when $%
p_{T}\sim 1-2.5$ GeV even when the bulk viscosity to entropy density ratio, $%
\zeta/s$, is significantly smaller than $1/(4\pi)$ whereas shear viscosity enhances $v_2(p_T)$ to $v_5(p_T)$.
| On behalf of collaboration: | None |
|---|
Primary author
Dr
Jacquelyn Noronha-Hostler
(University of Sao Paulo)
Co-authors
Frederique Grassi
Gabriel Denicol
(McGill University)
Jorge Noronha
(University of Sao Paulo)
Rone Andrade
(Universidade de São Paulo USP)
