Conserved charge fluctuations at vanishing and non-vanishing chemical potential

Abstract

Up to 6th order cumulants of fluctuations of net baryon-number, net electric charge and net strangeness as well as correlations among these conserved charge fluctuations are now being calculated in lattice QCD. These cumulants provide a wealth of information on the properties of strong-interaction matter in the transition region from the low temperature hadronic phase to the quark-gluon plasma phase. They can be used to quantify deviations from hadron resonance gas (HRG) model calculations which frequently are used to determine thermal conditions realized in heavy ion collision experiments. Already some second order cumulants like the correlations between net baryon-number and net strangeness or net electric charge differ significantly at temperatures above 155 MeV in QCD and HRG model calculations. We show that these differences increase at non-zero baryon chemical potential constraining the applicability range of HRG model calculations to even smaller values of the temperature.

4 pages, 6 figures, contribution to the proceedings of Quark Matter 2017, to appear in Nuclear Physics A

References in corpus (7)

• The equation of state in (2+1)-flavor QCD
• The QCD Equation of State to $\mathcal{O}({\mu }_B^6)$ from Lattice QCD
• Susceptibilities near the QCD (tri)critical point
• Hadron yields and the phase diagram of strongly interacting matter
• The QCD Equation of State to $\mathcal{O}({\mu }_B^4)$ from Lattice QCD
• Net-baryon fluctuations measured with ALICE at the CERN LHC
• Identified particle production and freeze-out properties in heavy-ion collisions at RHIC Beam Energy Scan program

Cited by in corpus (11)

• Global baryon number conservation encoded in net-proton fluctuations measured in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Collision energy dependence of second-order off-diagonal and diagonal cumulants of net-charge, net-proton and net-kaon multiplicity distributions in Au+Au collisions
• Fourier coefficients of the net-baryon number density and chiral criticality
• Baryon number probability distribution at finite temperature
• Recent results on net-baryon fluctuations in ALICE
• The balance of attractive and repulsive hadronic interactions: the influence of hadronic spectrum and excluded volume effects on lattice thermodynamics and consequences on experiments
• Deconfinement Transition Effects on Cosmological Parameters and Primordial Gravitational Wave Spectrum
• Chiral criticality and glue dynamics
• Efficiency corrections for mutually inclusive variables and particle identification effect for mixed-cumulants in heavy-ion collisions
• Overlap between Lattice QCD and HRG with in-medium effects and parity doubling
• van der Waals Interactions and Hadron Resonance Gas: Role of resonance widths modeling on conserved charges fluctuations