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