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

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We construct net baryon number and strangeness susceptibilities as well as correlations between electric charge, strangeness and baryon number from experimental data at midrapidity of the ALICE Collaboration at CERN. The data were taken in central Pb-Pb collisions at sNN=2.76 TeV and cover one unit...

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Bibliographic Details
Main Authors: Braun-Munzinger, Peter (Author) , Kalweit, A. (Author) , Redlich, Krzysztof (Author) , Stachel, Johanna (Author)
Format: Article (Journal)
Language:English
Published: 3 June 2015
In: Physics letters
Year: 2015, Volume: 747, Pages: 292-298
ISSN:1873-2445
DOI:10.1016/j.physletb.2015.05.077
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2015.05.077
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269315004219
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Author Notes:P. Braun-Munzinger, A. Kalweit, K. Redlich, J. Stachel
Description
Summary:We construct net baryon number and strangeness susceptibilities as well as correlations between electric charge, strangeness and baryon number from experimental data at midrapidity of the ALICE Collaboration at CERN. The data were taken in central Pb-Pb collisions at sNN=2.76 TeV and cover one unit of rapidity. The resulting fluctuations and correlations are consistent with Lattice QCD results at the chiral crossover pseudocritical temperature Tc≃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 Tc is found to exceed 3000 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.
Item Description:Gesehen am 28.05.2020
Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2015.05.077

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