Extracting the bulk viscosity of the quark-gluon plasma

Abstract

We investigate the implications of a nonzero bulk viscosity coefficient on the azimuthal momentum anisotropy of ultracentral relativistic heavy ion collisions at the Large Hadron Collider. We find that, with IP-Glasma initial conditions, a finite bulk viscosity coefficient leads to a better description of the flow harmonics in ultracentral collisions. We then extract optimal values of bulk and shear viscosity coefficients that provide the best agreement with flow harmonic coefficients data in this centrality class.

arXiv comment4 pages, 5 figures, proceedings of the XXIV Quark Matter conference, May 19-24 2014, Darmstadt (Germany)

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• Imprints of fluctuating proton shapes on flow in proton-lead collisions at the LHC
• The ALICE experiment: a journey through QCD
• Effect of the QCD equation of state and strange hadronic resonances on multiparticle correlations in heavy ion collisions
• Moving forward to constrain the shear viscosity of QCD matter
• Viscous Effects on the Mapping of the Initial to Final State in Heavy Ion Collisions
• Wounded quarks in A+A, p+A, and p+p collisions
• Sensitivity of flow harmonics to sub-nucleon scale fluctuations in heavy ion collisions
• Hydrodynamic transport coefficients for the non-conformal quark-gluon plasma from holography
• Transport coefficients of a hot QCD medium and their relative significance in heavy-ion collisions
• Relativistic quantum transport coefficients for second-order viscous hydrodynamics
• Estimating transport coefficients in hot and dense quark matter
• Systematic studies of correlations between different order flow harmonics in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Shape and flow fluctuations in ultra-central Pb+Pb collisions at the LHC
• Higher harmonic non-linear flow modes of charged hadrons in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Quasiparticle second-order viscous hydrodynamics from kinetic theory
• Quasiparticle anisotropic hydrodynamics for central collisions
• Possible octupole deformation of ${}^{208}$Pb and the ultracentral $v_2$ to $v_3$ puzzle
• New paradigm for fluctuations in heavy-ion collisions
• Exact solution of the (0+1)-dimensional Boltzmann equation for massive Bose-Einstein and Fermi-Dirac gases
• Quasiparticle anisotropic hydrodynamics
• Features of the IP-Glasma
• Hydrodynamic fluctuations and ultra-central flow puzzle in heavy-ion collisions
• Far-from-equilibrium attractors for massive kinetic theory in the relaxation time approximation
• Assessing the ultracentral flow puzzle in hydrodynamic modeling of heavy-ion collisions
• Temperature dependence of transport coefficients of QCD in high-energy heavy-ion collisions
• Thermoelectric response of a weakly magnetized thermal QCD medium
• Collective nuclear vibrations and initial state shape fluctuations in central Pb+Pb collisions: resolving the $v_2$ to $v_3$ puzzle
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• Influence of collective nuclear vibrations on initial state eccentricities in Pb+Pb collisions
• Collective phenomena in high-energy nuclear collisions
• Thermoelectric transport coefficients of quark matter