Charge-Dependent Correlations in Relativistic Heavy Ion Collisions and the Chiral Magnetic Effect

Abstract

We provide a phenomenological analysis of present experimental searches for local parity violation manifested through the Chiral Magnetic Effect. We introduce and discuss the relevant correlation functions used for the measurements. Our analysis of the available data from both RHIC and LHC shows that the present experimental evidence for the Chiral Magnetic Effect is rather ambiguous. We further discuss in some detail various background contributions due to conventional physics, which need to be understood quantitatively in order to draw a definitive conclusion about the existence of local parity violation in heavy ion collisions.

37 pages, to appear in Lect. Notes Phys. "Strongly interacting matter in magnetic fields" (Springer), edited by D. Kharzeev, K. Landsteiner, A. Schmitt, H.-U. Yee

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• Constraints on the chiral magnetic effect using charge-dependent azimuthal correlations in pPb and PbPb collisions at the LHC
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• Event-by-event distribution of magnetic field energy over initial fluid energy density in $\sqrt{s_{\mathrm{NN}}}$= 200 GeV Au-Au collisions
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• Hydrodynamics with chiral anomaly and charge separation in relativistic heavy ion collisions
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• Influence of the neutron-skin effect on nuclear isobar collisions at RHIC
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• Utilization of Event Shape in Search of the Chiral Magnetic Effect in Heavy-ion Collisions
• Space-average electromagnetic fields and EM anomaly weighted by energy density in heavy-ion collisions
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• The Isospin Asymmetry in Anomalous Fluid Dynamics
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• Chiral anomalous processes in magnetospheres of pulsars and black holes
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• Saturation properties of nuclear matter in the presence of strong magnetic field
• Evolution of initial stage fluctuations in the glasma
• Background evaluations for the chiral magnetic effect with normalized correlators using a multiphase transport model
• Chiral Magnetic Effect in Isobaric Collisions from Anomalous-Viscous Fluid Dynamics (AVFD)
• Measurement of the charge separation along the magnetic field with Signed Balance Function in 200 GeV Au + Au collisions at STAR
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• Estimation of the chiral magnetic effect considering the magnetic field response of the QGP medium
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• Chiral magnetic effect in isobaric collisions
• Anomalous plasma: chiral magnetic effect and all that
• Holographic Charged Fluid with Chiral Electric Separation Effect
• The BEST framework for the search for the QCD critical point and the chiral magnetic effect
• Recent developments in chiral and spin polarization effects in heavy-ion collisions
• Conserved Charge Fluctuations and Susceptibilities in Strongly Interacting Matter
• Quantifying the Chiral Magnetic Effect from Anomalous-Viscous Fluid Dynamics
• Experimental review on the chiral magnetic effect in relativistic heavy ion collisions
• Chiral magnetohydrodynamics for heavy-ion collisions
• Search for the chiral magnetic effect through beam energy dependence of charge separation using event shape selection
• Topological charge fluctuations in the Glasma
• Manipulating strong electromagnetic fields with the average transverse momentum of relativistic nuclear collisions
• Sliding Dumbbell Method to search for the CME in heavy ion collisions
• Charge balancing and the fall off of the ridge
• Chirality and Magnetic Field
• Turning up and down strong magnetic fields in relativistic nuclear collisions
• Investigation of Experimental Observables in Search of the Chiral Magnetic Effect in Heavy-ion Collisions in the STAR experiment
• The effect of electric and chiral magnetic conductivities on azimuthally fluctuating electromagnetic fields and observables in isobar collisions
• Topological and magnetic properties of the QCD vacuum probed by overlap fermions
• From gluon topology to chiral anomaly: Emergent phenomena in quark-gluon plasma
• The Chrial Magnetic Wave and Strong Field Effects in Heavy Ion Collisions
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• Chiral perturbation theory vs. Linear Sigma Model in a chiral imbalance medium