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

• Verfasst von: Braun-Munzinger, Peter [VerfasserIn]
• Verfasst von: Kalweit, A. [VerfasserIn]
• Verfasst von: Redlich, Krzysztof [VerfasserIn]
• Verfasst von: Stachel, Johanna [VerfasserIn]
• Titel: Confronting fluctuations of conserved charges in central nuclear collisions at the LHC with predictions from Lattice QCD
• Verf.angabe: P. Braun-Munzinger, A. Kalweit, K. Redlich, J. Stachel
• E-Jahr: 2016
• Jahr: 5 October 2016
• Umfang: 4 S.
• Fussnoten: Gesehen am 19.05.2020
• Titel Quelle: Enthalten in: Nuclear physics. A, Nuclear and hadronic physics
• Ort Quelle: Amsterdam : North-Holland Publ. Co., 1967
• Jahr Quelle: 2016
• Band/Heft Quelle: 956(2016), Seite 805-808
• ISSN Quelle: 1873-1554
• DOI: doi:10.1016/j.nuclphysa.2016.02.024
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: fluctuations of conserved charges
• Sach-SW: Lattice QCD
• Sach-SW: light flavour hadron production in heavy-ion collisions
• K10plus-PPN: 169851848X

Abstract

We construct net baryon number and strangeness susceptibilities as well as correlations between electric charge, strangeness and baryon number from experimental data on the particle production yields 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. We show that 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. Since Lattice QCD calculations are performed at a baryochemical potential of μB=0, the comparisons with LHC data are the most direct due to the vanishing baryon transport to midrapidity at these high energies.