Two- and three-particle nonflow contributions to the chiral magnetic effect measurement by spectator and participant planes in relativistic heavy ion collisions

Abstract

Correlation measurements with respect to the spectator and participant planes in relativistic heavy ion collisions were proposed to extract the chiral magnetic effect (CME) from background dominated azimuthal correlators. This paper investigates the effects of two- and three-particle nonflow correlations on the extracted CME signal fraction, $f_{\text{CME}}$. It is found, guided by a multiphase transport (AMPT) model and the heavy ion jet interaction generator (HIJING) together with experimental data, that the nonflow effects amount to approximately $(4\pm 5)$% and $(-5\pm 3)$% without and with pseudorapidity gaps, respectively, in 20-50% centrality Au+Au collisions at $\sqrt{s_{\text{NN}}}=200\text{ GeV}$.

11 pages, 9 figures, 1 table

References in corpus (16)

• The Chiral Magnetic Effect
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• Beam-energy dependence of charge separation along the magnetic field in Au+Au collisions at RHIC
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• Hadronic resonance production in $d$+Au collisions at $\sqrt{s_{{}_{NN}}}$ = 200 GeV at RHIC
• Momentum conservation and correlation analyses in heavy-ion collisions at ultrarelativistic energies
• Revisit the Chiral Magnetic Effect Expectation in Isobaric Collisions at the Relativistic Heavy Ion Collider
• Methods for a blind analysis of isobar data collected by the STAR collaboration
• Anisotropic Flow and Jet Quenching in Relativistic Nuclear Collisions
• Search for the chiral magnetic effect via charge-dependent azimuthal correlations relative to spectator and participant planes in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Cited by in corpus (17)

• Properties of the QCD Matter -- An Experimental Review of Selected Results from RHIC BES Program
• Implications of the isobar run results for chiral magnetic effect in heavy ion collisions
• Chiral Magnetic Effect in Heavy Ion Collisions: The Present and Future
• Revisit the Chiral Magnetic Effect Expectation in Isobaric Collisions at the Relativistic Heavy Ion Collider
• Global constraint on the magnitude of anomalous chiral effects in heavy-ion collisions
• Examination of nucleon distribution with Bayesian imaging for isobar collisions
• Upper Limit on the Chiral Magnetic Effect in Isobar Collisions at the Relativistic Heavy-Ion Collider
• Estimate of Background Baseline and Upper Limit on the Chiral Magnetic Effect in Isobar Collisions at $\sqrt{s_{\text{NN}}}=200$ GeV at the Relativistic Heavy-Ion Collider
• Impact of event activity variable on the ratio of observables in isobar collisions
• Review of nonflow estimation methods and uncertainties in relativistic heavy-ion collisions
• Estimate of a nonflow baseline for the chiral magnetic effect in isobar collisions at RHIC
• Collective Excitation in High-Energy Nuclear Collisions -- In Memory of Professor Lianshou Liu
• 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
• Experimental review on the chiral magnetic effect in relativistic heavy ion collisions
• Event-by-event correlations between $\Lambda$ ($\bar{\Lambda }$) hyperon global polarization and handedness with charged hadron azimuthal separation in Au+Au collisions at $\sqrt{s_{\text{NN}}}=27\text{ GeV}$ from STAR
• Neural Unfolding of the Chiral Magnetic Effect in Heavy-Ion Collisions
• Investigating event-shape methods in the search for the chiral magnetic effect in relativistic heavy ion collisions