Fluctuations as probe of the QCD phase transition and freeze-out in heavy ion collisions at LHC and RHIC
By B. Friman, F. Karsch, K. Redlich, V. Skokov. 2011
206 citations recorded by the source corpus.
We discuss the relevance of higher order cumulants of net baryon number fluctuations for the analysis of freeze-out and critical conditions in heavy ion collisions at LHC and RHIC. Using properties of O(4) scaling functions, we discuss the generic structure of these higher cumulants at vanishing baryon chemical potential and apply chiral model calculations to explore their properties at non-zero baryon chemical potential. We show that the ratios of the sixth to second and eighth to second order cumulants of the net baryon number fluctuations change rapidly in the transition region of the QCD phase diagram. Already at vanishing baryon chemical potential they deviate considerably from the predictions of the hadron resonance gas model which reproduce the second and fourth order cumulants of the net proton number fluctuations at RHIC. We point out that the sixth order cumulants of baryon number and electric charge fluctuations remain negative at the chiral transition temperature. Thus, they offer the possibility to probe the proximity of the chemical freeze-out to the crossover line.
Subfields: Nuclear and High Energy Physics, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/13b72b82772fbcbd574eedc98317fe71a7db167f
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In Nuclear and High Energy Physics
- V. Koch
- T. Schaefer
- J. Stachel
- P. Braun-Munzinger
- C. Fischer
- Markus Q. Huber
- Alexander Rothkopf
- A. Andronic
In Statistical and Nonlinear Physics
Citations in the corpus
- Properties of hot and dense matter from relativistic heavy ion collisions (2015, background): “For a detailed discussion we refer to [283].”
- QCD at finite temperature and chemical potential from Dyson–Schwinger equations (2018, background): “Provided the chemical freeze-out in heavy ion collisions is sufficiently close to the chiral critical line and the CEP, it has been suggested [21, 22, 119–123] that fluctuations”
- Mapping the phases of quantum chromodynamics with beam energy scan (2019, unknown): “As discussed in [91–94] in the context of model as well as lattice QCD calculations, a cross-over transition results in negative sixth and eighth order”