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The Chiral Magnetic Effect (CME) is a macroscopic manifestation of fundamental chiral anomaly in a many-body system of chiral fermions, and emerges as anomalous transport current in the fluid dynamics framework. Experimental observation of…

Nuclear Theory · Physics 2017-12-01 Yin Jiang , Shuzhe Shi , Yi Yin , Jinfeng Liao

Chiral anomaly is a fundamental aspect of quantum theories with chiral fermions. How such microscopic anomaly manifests itself in a macroscopic many-body system with chiral fermions, is a highly nontrivial question that has recently…

Nuclear Theory · Physics 2018-05-09 Shuzhe Shi , Yin Jiang , Elias Lilleskov , Jinfeng Liao

We calculate the electromagnetic current with a more realistic approach in the RHIC and LHC energy regions in the article. We take the partons formation time as the initial time of the magnetic field response of QGP medium. The maximum…

High Energy Physics - Phenomenology · Physics 2018-03-28 Duan She , Sheng-Qin Feng , Yang Zhong , Zhong-Bao Yin

Chiral magnetic effect (CME) has been suggested to take place during peripheral relativistic heavy ion collisions. However, signals of its realization are not yet independent of ambiguities and thus probing the non-trivial topological vacua…

High Energy Physics - Phenomenology · Physics 2016-01-14 A. J. Mizher , A. Raya , C. Villavicencio

This study explores the Chiral Magnetic Effect (CME) in ultra-relativistic heavy-ion collisions. The CME, observed as back-to-back charge separation along the magnetic field axis, is investigated using the newly developed Sliding Dumbbell…

Nuclear Theory · Physics 2025-02-04 Madan M. Aggarwal , Anjali Attri , Sonia Parmar , Anjali Sharma , Jagbir Singh

Gauge fields provide the fundamental interactions in the Standard Model of particle physics. Gauge field configurations with nontrivial topological windings are known to play crucial roles in many important phenomena, from…

High Energy Physics - Phenomenology · Physics 2023-04-10 Anping Huang , Shuzhe Shi , Shu Lin , Xingyu Guo , Jinfeng Liao

It has been suggested that local parity violation in QCD would lead to charge separation of quarks by the Chiral Magnetic Effect (CME) in heavy ion collisions. Charge separation could yield a dynamical charge multiplicity asymmetry with…

Nuclear Experiment · Physics 2012-05-22 Quan Wang

The Chiral Magnetic Effect (CME) is a phenomenon by which an electric current develops in the direction of a magnetic field applied to a material. Recent theoretical research suggests that the CME can be observed in thermal equilibrium…

Mesoscale and Nanoscale Physics · Physics 2017-12-18 Artem Ivashko , Vadim Cheianov

We derive a nonlocal effective Lagrangian for the chiral magnetic effect. An electric field is generated by winding number fluctuations of the nonabelian gauge field in the presence of a strong magnetic field. We estimate the magnitude of…

High Energy Physics - Phenomenology · Physics 2010-12-23 Berndt Müller , Andreas Schäfer

We study the signatures of the Chiral Magnetic Effect (CME) in $SU(2)$ gauge theory with $N_f = 2$ flavours of dynamical fermions at finite temperature $T$, quark chemical potential $\mu$ and a weak external magnetic field $e B$. We…

High Energy Physics - Lattice · Physics 2026-05-07 P. V. Buividovich , L. von Smekal , D. Smith

The Chiral Magnetic Effect (CME) refers to charge separation along a strong magnetic field, due to topological charge fluctuations in QCD. Charge correlation ($\Delta\gamma$) signals consistent with CME have been first observed almost a…

Nuclear Experiment · Physics 2019-06-05 Hanlin Li , Jie Zhao , Fuqiang Wang

Charge-dependent azimuthal particle correlations with respect to the second-order event plane in pPb and PbPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV have been studied with the CMS experiment at the LHC. The…

Nuclear Experiment · Physics 2017-03-29 CMS Collaboration

The energy dependence of the local ${\cal P}$ and ${\cal CP}$ violation in Au+Au and Cu+Cu collisions in a large energy range is estimated within a simple phenomenological model. It is expected that at LHC the Chiral Magnetic effect (CME)…

Nuclear Theory · Physics 2015-05-20 V. D. Toneev , V. Voronyuk

The chiral magnetic effect (CME) is a quantum relativistic effect that describes the appearance of an additional electric current along a magnetic field. It is caused by an asymmetry between the number densities of left- and right-handed…

Plasma Physics · Physics 2019-12-16 Jennifer Schober , Axel Brandenburg , Igor Rogachevskii

The search for the chiral magnetic effect (CME) in relativistic heavy-ion collisions (HICs) is challenged by significant background contamination. We present a novel deep learning approach based on a U-Net architecture to time-reversely…

Nuclear Theory · Physics 2025-10-27 Shuang Guo , Lingxiao Wang , Kai Zhou , Guo-Liang Ma

We review some experimental consequences of the presence of superstrong magnetic fields of order of the nuclear scale in noncentral heavy-ion collisions. We present lattice estimates for the strength of the Chiral Magnetic Effect (CME) for…

High Energy Physics - Phenomenology · Physics 2015-06-12 P. V. Buividovich , M. I. Polikarpov , O. V. Teryaev

The Multi-Phase Transport model, AMPT, and the Anomalous Viscous Fluid Dynamics model, AVFD, are used to assess a possible chiral-magnetically-driven charge separation ($\Delta S$) recently measured with the ${R_{\Psi_2}(\Delta S)}$…

Nuclear Experiment · Physics 2021-05-20 Roy A. Lacey , Niseem Magdy

We present a scenario in heavy-ion collisions where different modes of collective motions are noninterdependent, driven by factorized actions in the created nuclear medium. Such physics mechanisms could each dominate at a distinct evolution…

Nuclear Theory · Physics 2023-06-29 Zhiwan Xu , Gang Wang , Aihong Tang , Huan Zhong Huang

The chiral magnetic effect (CME) induces an electric charge separation in a chiral medium along the magnetic field that is mostly produced by spectator protons in heavy-ion collisions. The experimental searches for the CME, based on the…

High Energy Physics - Phenomenology · Physics 2020-06-24 Subikash Choudhury , Gang Wang , Wanbing He , Yu Hu , Huan Zhong Huang

Using two novel methods, pair invariant mass ($m_{inv}$) and comparative measurements with respect to reaction plane ($\Psi_{\rm RP}$) and participant plane ($\Psi_{\rm PP}$), we isolate the possible chiral magnetic effect (CME) from…

Nuclear Experiment · Physics 2019-02-20 Jie Zhao