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A charge-sensitive in-event correlator is proposed and tested for its efficacy to detect and characterize charge separation associated with the Chiral Magnetic Effect (CME) in heavy ion collisions. Tests, performed with the aid of two…

数据分析、统计与概率 · 物理学 2018-06-27 Niseem Magdy , Shuzhe Shi , Jinfeng Liao , N. Ajitanand , Roy A. Lacey

We present a systematic study of the correlators used experimentally to probe the Chiral Magnetic Effect (CME) using the Anomalous Viscous Fluid Dynamics (AVFD) model in Pb--Pb and Xe--Xe collisions at LHC energies. We find a…

核理论 · 物理学 2021-09-01 Panos Christakoglou , Shi Qiu , Joey Staa

The search of chiral magnetic effect (CME) in heavy-ion collisions has attracted long-term attentions. Multiple observables have been proposed but all suffer from obstacles due to large background contaminations. In this Letter, we…

高能物理 - 唯象学 · 物理学 2022-11-23 Yuan-Sheng Zhao , Lingxiao Wang , Kai Zhou , Xu-Guang Huang

We study the impact of a non-uniform magnetic background field on the Chiral Magnetic Effect (CME) in equilibrium QCD using lattice simulations with 2+1 flavors of dynamical staggered quarks at the physical point. We show that in the…

高能物理 - 格点 · 物理学 2025-09-17 B. B. Brandt , G. Endrődi , E. Garnacho-Velasco , G. Markó , A. D. M. Valois

A quark interaction with topologically nontrivial gluonic fields, instantons and sphalerons, violates \P~ and \CP~ symmetry. In the strong magnetic field of a noncentral nuclear collision such interactions lead to the charge separation…

核理论 · 物理学 2010-10-27 Sergei A. Voloshin

We study the charge-dependent azimuthal correlations in relativistic heavy ion collisions, as motivated by the search for the Chiral Magnetic Effect (CME) and the investigation of related background contributions. In particular we aim to…

核理论 · 物理学 2015-04-15 John Bloczynski , Xu-Guang Huang , Xilin Zhang , Jinfeng Liao

We report on the mean-field study of the Chiral Magnetic Effect (CME) in static magnetic fields within a simple model of a parity-breaking Weyl semimetal given by the lattice Wilson-Dirac Hamiltonian with constant chiral chemical potential.…

强关联电子 · 物理学 2015-12-07 P. V. Buividovich , M. Puhr , S. N. Valgushev

In this paper a pair of observables are proposed as alternative ways, by examining the fluctuation of net momentum-ordering of charged pairs, to study the charge separation induced by the Chiral Magnetic Effect (CME) in relativistic heavy…

核实验 · 物理学 2020-06-24 A. H. Tang

The chiral magnetic effect (CME) refers to charge separation along a strong magnetic field between left- and right-handed quarks, caused by interactions with topological gluon fields from QCD vacuum fluctuations. We present two approaches…

核实验 · 物理学 2021-02-03 Jie Zhao

The isobaric collision experiment at RHIC provides the unique opportunity to detect the possible signal of Chiral Magnetic Effect (CME) in heavy ion collisions. The idea is to contrast the correlation observables of the two colliding…

高能物理 - 唯象学 · 物理学 2019-02-20 Shuzhe Shi , Hui Zhang , Defu Hou , Jinfeng Liao

The emergence of the Chiral Magnetic Effect (CME) and the related anomalous current is investigated using the real time Dirac-Heisenberg-Wigner formalism. This method is widely used for describing strong field physics and QED vacuum…

高能物理 - 唯象学 · 物理学 2018-08-08 Dániel Berényi , Péter Lévai

At the early stage of heavy ion collisions, non-trivial topologies of the gauge fields can be created resulting in an imbalance of axial charge density and eventually separation of electric charges along the direction of the magnetic field…

核理论 · 物理学 2019-02-27 Sk Noor Alam , Subhasis Chattopadhyay

Chirality is a ubiquitous concept in modern science, from particle physics to biology. In quantum physics, chirality of fermions is linked to topology of gauge fields by the chiral anomaly. While the chiral anomaly is usually associated…

高能物理 - 唯象学 · 物理学 2022-04-26 Dmitri E. Kharzeev

The Chiral Magnetic Effect (CME) is a phenomenon in which electric charge is separated by a strong magnetic field from local domains of chirality imbalance and parity violation in quantum chromodynamics (QCD). The CME-sensitive observable,…

数据分析、统计与概率 · 物理学 2025-11-06 Han-Sheng Li , Yicheng Feng , Fuqiang Wang

Recent experiments show that $\Delta\gamma$, an observable designed for detecting the chiral magnetic effect (CME), in small collision system $p+A$ is similar with that in heavy ion collision $A+A$. This brings a challenge to the existence…

高能物理 - 唯象学 · 物理学 2022-08-10 Zong-Wei Zhang , Xian-Zhuo Cen , Wei-Tian Deng

The chiral magnetic effect (CME) is a collective quantum phenomenon that arises from the interplay between gauge field topology and fermion chiral anomaly, encompassing a wide range of physical systems from semimetals to quark-gluon plasma.…

核理论 · 物理学 2025-01-03 Dmitri E. Kharzeev , Jinfeng Liao , Prithwish Tribedy

The chiral magnetic effect (CME) in relativistic heavy-ion collisions originates from a chirality imbalance among quarks within metastable QCD vacuum domains and may be linked to $CP$ violation, which is believed to play a crucial role in…

高能物理 - 唯象学 · 物理学 2026-03-31 Jing Gu , Jinhui Chen , Jie Zhao

Background: The chiral magnetic effect (CME) is extensively studied in heavy-ion collisions at RHIC and the LHC. An azimuthal correlator called $R_{\Psi_{m}}$ was proposed to measure the CME. By observing the same $R_{\Psi_{2}}$ and…

核理论 · 物理学 2021-04-07 Yicheng Feng , Jie Zhao , Hao-jie Xu , Fuqiang Wang

Employing a two-band model of Weyl semimetal, the existence of the chiral magnetic effect (CME) is established within the linear-response theory. The crucial role played by the limiting procedure in deriving correct transport properties is…

介观与纳米尺度物理 · 物理学 2015-03-18 Ming-Che Chang , Min-Fong Yang

When searching for anomalous chiral effects in heavy-ion collisions, one of the most crucial points is the relationship between the signal and the background. In this letter, we present a simulation in a modified blast wave model at LHC…