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Exploring the chiral magnetic effect in isobar collisions through Chiral Anomaly Transport

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arxiv 2412.09130 v1 pith:QNKDQUBE submitted 2024-12-12 hep-ph nucl-th

classification hep-phnucl-th
keywords collisionschiralisobarsignaltransportanomalyeffectmagnetic
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We investigate the signal of the chiral magnetic effect (CME) in Au+Au collisions and isobar collisions of $_{44}^{96}\text{Ru}+\rm{} _{44}^{96}Ru$ and $_{40}^{96}\text{Zr}+\rm{}_{40}^{96}Zr$ in the newly developed chiral anomaly transport (CAT) module based on the state-of-the-art model a multiphase transport (AMPT). Our numerical simulation results for the ratio charge correlation $\Delta\gamma$ in Ru+Ru and Zr+Zr collisions are close to the latest experimental data. The simulation shows that the CME signal is larger in Ru+Ru collisions than that in Zr+Zr collisions, while the background is smaller, and the upper limit of the CME signal is $15\%$ in the isobar collisions.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Investigating $^{238}$U Deformation via Dilepton Production in Relativistic Heavy-Ion Collisions

    nucl-th 2025-07 conditional novelty 6.0 of 10

    In a transport-model study of U+U collisions at 193 GeV, dilepton yields normalized by charged multiplicity are shown to scale linearly with the square of the nuclear quadrupole deformation beta_2, with stronger sensi...

  2. Constraining the chiral magnetic effect using spectator and participant planes across Au+Au and isobar collisions at $\sqrt{s_{_{\rm NN}}} = 200$ GeV

    nucl-th 2025-01 conditional novelty 4.0 of 10

    AMPT simulations suggest the CME signal-to-background plane ratio b/a is 0.88±0.08 in Au+Au, closer to unity than isobar collisions (0.65±0.18), implying the two-plane CME method is more reliable in Au+Au.

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