Observables for longitudinal flow correlations in heavy-ion collisions

Abstract

We propose several new observables/correlators, based on correlations between two or more subevents separated in pseudorapidity $\eta$, to study the longitudinal flow fluctuations. We show that these observables are sensitive to the event-by-event fluctuations, as a function of $\eta$, of the initial condition as well as the non-linear mode-mixing effects. Experimental measurement of these observables shall provide important new constraints on the boost-variant event-by-event initial conditions required by all 3+1-dimensional viscous hydrodynamics models.

arXiv comment7 pages, 2 figures, a few typo corrected

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Cited by in corpus (19)

• Measurement of longitudinal flow de-correlations in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ and 5.02 TeV with the ATLAS detector
• Probing nuclear quadrupole deformation from correlation of elliptic flow and transverse momentum in heavy ion collisions
• Longitudinal fluctuations and decorrelations of anisotropic flows at the LHC and RHIC energies
• Longitudinal flow decorrelations in Xe+Xe collisions at $\sqrt{s_{\mathrm{NN}}}=5.44$ TeV with the ATLAS detector
• Longitudinal decorrelation measures of flow magnitude and event-plane angles in ultra-relativistic nuclear collisions
• Rapidity decorrelation of anisotropic flow caused by hydrodynamic fluctuations
• Factorization breaking for higher moments of harmonic flow
• Angle and magnitude decorrelation in the factorization breaking of collective flow
• Energy dependence of longitudinal flow decorrelation from STAR
• Effects of hydrodynamic and initial longitudinal fluctuations on rapidity decorrelation of collective flow
• Longitudinal eccentricity decorrelations in heavy ion collisions
• Momentum dependent flow correlations in deformed nuclei at collision energies available at the BNL Relativistic Heavy Ion Collider
• Effect of global momentum conservation on longitudinal flow decorrelation
• An overview of new measurements of flow, chirality, and vorticity from STAR experiment
• Random model of flow decorrelation
• New measures of longitudinal decorrelation of harmonic flow
• Longitudinal Dynamics of Large and Small Systems from a 3D Bayesian Calibration of RHIC Top-energy Collision Data
• Initial state and hydrodynamic modeling of heavy-ion collisions at RHIC BES energies
• A Method to Constrain Preferential Emission and Spectator Dynamics in Heavy-Ion Collisions