Seminar in Hadronic Physics

Speed of sound from ultracentral nucleus-nucleus collisions using the mean transverse momentum

André Veiga Giannini

Grande Dourados Federal University

It has recently been proposed that the speed of sound of the Quark-Gluon Plasma can be  experimentally measured using the variation of the mean transverse momentum with the particle  multiplicity in ultracentral heavy-ion collisions. In this talk we access this correspondence  via hybrid hydrodynamic simulations at zero impact parameter with several equations of state.  It is found the correspondence is satisfied for a smooth, boost-invariant fluid and an ideal  detector indicating the reliability of extracting the speed of sound from experimental data.  Differences between this simplified setup and actual experiments are discussed.