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Charge asymmetry dependence of flow and a novel correlator to detect the chiral magnetic wave in a multiphase transport model
- Source :
- Phys. Rev. C 100, 064907 (2019)
- Publication Year :
- 2019
-
Abstract
- In a multiphase transport model with the initial electric quadrupole moment, we studied and discussed the charge asymmetry ($A_{\rm ch}$) dependence of flow at varied kinematic windows in semi-central Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV. We then proposed a novel correlator $W$ which specially focuses on the difference of elliptic flow between positively and negatively charged hadrons induced by the chiral magnetic wave and, more importantly, is irrelevant to the ambiguous $A_{\rm ch}$. We found that the distribution of the second order correlator $W_2$ displays a convex structure in the absence of the quadrupole and a concave shape in the presence of the quadrupole. We also studied the response of $W_n$ for both signal and resonance background in a toy model and in analytical calculation. Such a method provides a new way to detect the chiral magnetic wave.<br />Comment: We correct the constant factor 2 in the sub-distribution function f1, f2 on the numerator of Eqa. (16) in previous version. Published version to be appeared in physical review c
- Subjects :
- High Energy Physics - Phenomenology
Nuclear Experiment
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. C 100, 064907 (2019)
- Publication Type :
- Report
- Accession number :
- edsarx.1911.00839
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevC.100.064907