Importance of Isobar Density Distributions on the Chiral Magnetic Effect Search

Under the approximate chiral symmetry restoration, quark interactions with topological gluon fields in quantum chromodynamics can induce a chirality imbalance and parity violation in local domains. An electric charge separation (CS) could be generated along the direction of a strong magnetic field (...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2018-07, Vol.121 (2), p.022301-022301, Article 022301
Main Authors: Xu, Hao-Jie, Wang, Xiaobao, Li, Hanlin, Zhao, Jie, Lin, Zi-Wei, Shen, Caiwan, Wang, Fuqiang
Format: Article
Language:English
Subjects:
Anisotropy
Chirality
Correlation analysis
Density functional theory
Domains
Magnetic effects
Quantum chromodynamics
Quarks
Restoration
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Under the approximate chiral symmetry restoration, quark interactions with topological gluon fields in quantum chromodynamics can induce a chirality imbalance and parity violation in local domains. An electric charge separation (CS) could be generated along the direction of a strong magnetic field (B), a phenomenon called the chiral magnetic effect (CME). CS measurements by azimuthal correlators are contaminated by major backgrounds from elliptic flow anisotropy (v_{2}). Isobaric _{44}^{96}Ru+_{44}^{96}Ru and _{40}^{96}Zr+_{40}^{96}Zr collisions have been proposed to identify the CME (expected to differ between the two systems) out of the backgrounds (to be almost the same). We show, by using the density functional theory calculations of the proton and neutron distributions, that these expectations may not hold as originally anticipated because the two systems may have sizable differences in eccentricity and v_{2}.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.121.022301