Confronting fluctuations of conserved charges in central nuclear collisions at the LHC with predictions from Lattice QCD

2014/12/30 by P. Braun‐Munzinger, Braun-Munzinger, Peter, A. Kalweit +5 · 5 citations
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Quantum Chromodynamics and Particle Interactions #Theoretical and Computational Physics

paper · pdf · doi:10.48550/arxiv.1412.8614

openalex publication_date 2014/12/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We construct net baryon number and strangeness susceptibilities as well as correlations between electric charge and strangeness from experimental data of the ALICE Collaboration at the CERN LHC. The data were taken in Pb-Pb collisions at √s_NN=2.76 TeV. The resulting fluctuations and correlations are consistent with Lattice QCD results at the chiral crossover pseudocritical temperature T_c≃ 155 MeV. This agreement lends strong support to the assumption that the fireball created in these collisions is of thermal origin and exhibits characteristic properties expected in QCD at the transition from the quark gluon plasma to the hadronic phase. The volume of the fireball for one unit of rapidity at T_c is found to exceed 4000 fm³. A detailed discussion on uncertainties in the temperature and volume of the fireball is presented. The results are linked to pion interferometry measurements and predictions from percolation theory.

Cited by

• Unfolding Baryon Number Fluctuations from Correlations of Light Nuclei Production in Heavy-Ion Collisions
• Higher order net-baryon number cumulants and baryon-strangeness correlations: Comparing QCD results on thepseudo-critical line with RHIC-BES II results on the freeze-out line
• Probing Strange Dark Matter through f-mode Oscillations of Neutron Stars with Hyperons and Quark Matter
• Bayesian Calibration of the Crossterms Eigenvolume HRG Model: Integrating Lattice QCD and Experimental Data
• A generalized definition of the isothermal compressibility in (2+1)-flavor QCD

Related

• Investigating baryon-strangeness and charge-strangeness correlations in Pb-Pb collisions at √(s_NN) = 5.02 TeV with ALICE
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• First results on the event-by-event fluctuations and correlations in\n Pb-Pb collisions at \√s_NN = 2.76 TeV
• Charge fluctuations in Pb--Pb collisions at √s_NN = 2.76 TeV measured by ALICE experiment
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