Freeze-out conditions from fluctuations of conserved charges: lattice meets experiment

21 May 2014, 11:30
helium (darmstadtium)



Schlossgraben 1 64283 Darmstadt Germany
Contributed Talk QCD at High Temperature and/or Density QCD phase diagram


Claudia Ratti


Recent results for moments of multiplicity distributions of net-protons and net-electric charge from the Star collaboration are compared to recent lattice QCD results for higher order fluctuations of baryon number and electric charge by the Wuppertal-Budapest collaboration. All lattice simulations are performed at the physical mass for light and strange quarks; all results are continuum extrapolated. We show that it is possible to extract an upper value for the freeze-out temperature, as well as precise baryo-chemical potential values corresponding to the four highest collision energies of the experimental beam energy scan. Consistency between baryon number and electric charge is also discussed.

Primary authors

Claudia Ratti Kalman Szabo (Wuppertal University) Sandor Katz Stefan Krieg (F) Szabolcs Borsanyi (University of Wuppertal) Zoltan Fodor (BUW)

Presentation Materials