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Nuclear Experiment

arXiv:2511.07358 (nucl-ex)
[Submitted on 10 Nov 2025]

Title:Experimental review on the chiral magnetic effect in relativistic heavy ion collisions

Authors:Wei Li, Qiye Shou, Fuqiang Wang
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Abstract:The chiral magnetic effect (CME) refers to a predicted phenomena in quantum chromodynamics that manifests as a charge separation along an external magnetic field, driven by an imbalance of quark chirality. Searches for the CME has been carried out by azimuthal particle correlations in relativistic heavy ion collisions where such a chirality imbalance is anticipated and a strong magnetic field is created in the initial stage. No conclusive experimental evidence on the CME has been established so far because of large background contributions to azimuthal correlation observables. We review the status of the experimental search for the CME, covering the observables used, the techniques to mitigate backgrounds, and the strengths and limitations of various experimental approaches, and outline a future prospect of the CME search in high-energy nuclear collisions.
Comments: 27 pages, 12 figures. Invited review for European Physical Journal Special Topics "Exploring Dense Nuclear Matter. Guest editors: Subhasis Chattopadhyay, Peter Senger"
Subjects: Nuclear Experiment (nucl-ex); High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
Cite as: arXiv:2511.07358 [nucl-ex]
  (or arXiv:2511.07358v1 [nucl-ex] for this version)
  https://doi.org/10.48550/arXiv.2511.07358

Submission history

From: Fuqiang Wang [view email]
[v1] Mon, 10 Nov 2025 18:11:37 UTC (1,987 KB)
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