Abstract
The extended RΨm(2)(ΔS2) correlator is presented and examined for its efficacy to detect and characterize the quadrupole charge separation (ΔS2) associated with the purported Chiral Magnetic Wave (CMW) produced in heavy-ion collisions. Sensitivity tests involving varying degrees of charge separation injected into events simulated with the Multi-Phase Transport Model (AMPT) show that the RΨm(2)(ΔS2) correlators provide discernible responses for the background- and signal-driven quadrupole charge separation. This distinction could help identify CMW-induced quadrupole charge separation via measurements of the RΨ2(2)(ΔS2) and RΨ3(2)(ΔS2) correlators, relative to the second- (Ψ2) and third-order (Ψ3) event planes. The tests also indicate a sensitivity level that would allow for robust experimental characterization of possible CMW-induced charge separation.
Highlights
Sensitivity tests involving varying degrees of proxy Chiral Magnetic Wave (CMW) signals injected into events simulated with the Multi-Phase Transport Model (AMPT), show that the RΨ(2m ) (∆S2) correlator provides discernible responses for background- and CMW-driven charge separation
Heavy-ion collisions at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC) can lead to a magnetized chiral relativistic quark-gluon plasma (QGP) [1,2,3,4,5], in which the mass of fermions are negligible compared to the temperature and/or chemical potential
The interplay between the chiral separation effect (CSE) and chiral magnetic effect (CME) in the QGP produced in heavy ion collisions, can lead to the production of a gapless collective mode – termed the chiral magnetic wave (CMW) [26], stemming from the coupling between the density waves of the electric and chiral charges
Summary
Heavy-ion collisions at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC) can lead to a magnetized chiral relativistic quark-gluon plasma (QGP) [1,2,3,4,5], in which the mass of fermions are negligible compared to the temperature and/or chemical potential. Sensitivity tests involving varying degrees of proxy CMW signals injected into events simulated with the Multi-Phase Transport Model (AMPT), show that the RΨ(2m ) (∆S2) correlator provides discernible responses for background- and CMW-driven charge separation.
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