NPA Zoom Seminar, Govert Nijs, MIT, “A Transverse Momentum Differential Global Analysis of Heavy Ion Collisions”

The understanding of heavy ion collisions and its quark-gluon plasma formation requires a complicated interplay of rich physics in a wealth of experimental data. In this work we compare for identified particles as a function of transverse momentum both the spectra and the anisotropic flow coefficients for both PbPb and pPb collisions. We do this in a model including a free streaming prehydrodynamic phase with variable velocity v_fs, thereby widening the scope of initial conditions. During the hydrodynamic phase we vary three new second order transport coefficients. The free streaming velocity has a preference slightly below unity. In this enlarged model the bulk viscosity is small and even consistent with zero.
Zoom link: https://yale.zoom.us/j/93903961284?pwd=empxRWhzdkY5SXpuQ2U2NmR1aWlpZz09