Charged hadrons vs thermal photons production in relativistic heavy-ion collisions

In this video, we illustrate the thermal photons and charged hadrons emission in the transverse plane of a central Pb+Pb collision at sqrt{s} = 2.76 A TeV. The temperature evolution of the fireball is color coded. The purple contour indicates the chemical freeze-out surface at T_chem = 165 MeV and white contour represents for the kinetic freeze-out at T_dec = 120 MeV. Charged hadron (red points) productions are shown in the left panel. In the right panel, emitted thermal photons are shown as the green points.