Ultracentral heavy ion collisions, transverse momentum and the equation of state

Understand

Ultracentral heavy ion collisions due to their exceptionally large multiplicity probe an interesting regime of quark-gluon plasma where the size is (mostly) fixed and fluctuations in the initial condition dominate.

• Spurred by the recent measurement of the CMS collaboration we investigate the driving factors of the increase of transverse momentum, including a complete analysis of the influence of the QCD equation of state.
• Particularly interesting is the influence of the centrality selection as well as the initial energy deposition.