May 13 – 19, 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

A new correlator for the detection and characterization of the Chiral Magnetic Effect

May 15, 2018, 5:00 PM
2h 40m
First floor and third floor (Palazzo del Casinò)

First floor and third floor

Palazzo del Casinò

Poster Chirality, vorticity and polarisation effects Poster Session


Shuzhe Shi (Indiana University)


A charge-sensitive in-event correlator ($R(\Delta S)$) is proposed and tested for its efficacy to detect and characterize charge separation associated with the Chiral Magnetic Effect (CME) in heavy ion collisions~[1]. For CME-driven charge separation, the correlator gives a concave response relative to the second-order event plane ($\Psi_2$), and a null response relative to the third-order plane ($\Psi_3$), consistent with the correlation (de-correlation) of the $\vec{B}$-field with the $\Psi_2$ ($\Psi_3$) plane. For non-CME background, the correlator gives responses, relative to $\Psi_2$ and $\Psi_3$, which allows a distinction between CME-driven charge separation and non-CME backgrounds. We discuss the $R(\Delta S)$ correlator and present results for its detailed response and sensitivity, to both signal and background, in several reaction models. They include (but are not limited to) a 3+1-dimensional hydrodynamic model [2], the Anomalous Viscous Fluid Dynamics (AVFD) model [3] and the Multi-Phase Transport model (AMPT) [4]. The implications for the use of the $R(\Delta S)$ correlator in the upcoming Isobar Run at RHIC will also be discussed.

[1] N. Magdy, S. Shi, J. Liao, N. Ajitanand, and R. A. Lacey, arXiv:1710.01717

[2] P. Bozek, arXiv:1711.02563

[3] S. Shi, Y. Jiang, E. Lilleskov, J. Liao, arXiv:1711.02496

[4] Lin Z W et al. Phys.Rev. C72 064901 (2005)

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Content type Experiment

Primary authors

Mr Niseem Abdelrahman"Magdy" (Stony Brook University) Roy Lacey (Stony Brook University) Jinfeng Liao (Indiana University) Shuzhe Shi (Indiana University)

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