Predictions for isobaric collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 200 GeV from a multiphase transport model

Abstract

The isobaric collisions of ${}_{44}^{96}$Ru + ${}_{44}^{96}$Ru and ${}_{40}^{96}$Zr + ${}_{40}^{96}$Zr have recently been proposed to discern the charge separation signal of the chiral magnetic effect (CME). In this article, we employ the string melting version of a multiphase transport model to predict various charged-particle observables, including $dN/d\eta$, $p_T$ spectra, elliptic flow ($v_2$), and particularly possible CME signals in Ru + Ru and Zr + Zr collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 200 GeV. Two sets of the nuclear structure parametrization have been explored, and the difference between the two isobaric collisions appears to be small, in terms of $dN/d\eta$, $p_T$ spectra, and $v_2$ for charged particles. We mimic the CME by introducing an initial charge separation that is proportional to the magnetic field produced in the collision, and study how the final-state interactions affect the CME observables. The relative difference in the CME signal between the two isobaric collisions is found to be robust, insensitive to the final-state interactions.

8 pages, 10 figures; final published version

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• Chiral kinetic approach to the chiral magnetic effect in isobaric collisions
• Influence of the neutron-skin effect on nuclear isobar collisions at RHIC
• Impact of magnetic-field fluctuations on measurements of the chiral magnetic effect in collisions of isobaric nuclei
• Multi-phase transport model predictions of isobaric collisions with nuclear structures from density functional theory
• Inferring nuclear structure from heavy isobar collisions using Trajectum
• Chiral Magnetic Effect in Heavy Ion Collisions: The Present and Future
• Coherent photo-produced J$/\psi$ and dielectron yields in isobaric collisions
• Extracting the magnitude of magnetic field at freeze-out in heavy-ion collisions
• Search for the chiral magnetic effect in collisions between two isobars with deformed and neutron-rich nuclear structures
• 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
• Detecting Chiral Magnetic Effect via Deep Learning
• Predictions for production of ${}_{\mathrm{\Lambda }}^3\mathrm{H}$ and ${}_{\overline{\mathrm{\Lambda }}}^3\overline{\mathrm{H}}$ in isobaric ${}_{44}^{96}$Ru+${}_{44}^{96}$Ru and ${}_{40}^{96}$Zr+${}_{40}^{96}$Zr collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV
• Recent developments in chiral and spin polarization effects in heavy-ion collisions
• Difference between signal and background of the chiral magnetic effect relative to spectator and participant planes in isobar collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=200$ GeV
• Hydrodynamic simulations of directed flow for light hadrons in Au+Au and isobar collisions $\sqrt{s_{\text{NN}}}=$ 200 GeV
• Search for the chiral magnetic effect through beam energy dependence of charge separation using event shape selection
• Experimental review on the chiral magnetic effect in relativistic heavy ion collisions
• Chirality and Magnetic Field
• 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