Exploring the chiral magnetic effect in isobar collisions through chiral anomaly transport

We investigate the signal of the chiral magnetic effect (CME) in <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi>Au</a:mi><a:mo>+</a:mo><a:mi>Au</a:mi></a:mrow></a:math> collisions and isobar collisions of <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mrow><b:mmultiscripts><b:mi>Ru</b:mi><b:mprescripts/><b:mn>44</b:mn><b:mn>96</b:mn></b:mmultiscripts><b:mo>+</b:mo><b:mmultiscripts><b:mi>Ru</b:mi><b:mprescripts/><b:mn>44</b:mn><b:mn>96</b:mn></b:mmultiscripts></b:mrow></b:math> and <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"><c:mrow><c:mmultiscripts><c:mi>Zr</c:mi><c:mprescripts/><c:mn>40</c:mn><c:mn>96</c:mn></c:mmultiscripts><c:mo>+</c:mo><c:mmultiscripts><c:mi>Zr</c:mi><c:mprescripts/><c:mn>40</c:mn><c:mn>96</c:mn></c:mmultiscripts></c:mrow></c:math> in the newly developed chiral anomaly transport module based on the state-of-the-art model “a multiphase transport.” Our numerical simulation results for the ratio charge correlation <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"><d:mrow><d:mi mathvariant="normal">Δ</d:mi><d:mi>γ</d:mi></d:mrow></d:math> in <f:math xmlns:f="http://www.w3.org/1998/Math/MathML"><f:mrow><f:mi>Ru</f:mi><f:mo>+</f:mo><f:mi>Ru</f:mi></f:mrow></f:math> and <g:math xmlns:g="http://www.w3.org/1998/Math/MathML"><g:mrow><g:mi>Zr</g:mi><g:mo>+</g:mo><g:mi>Zr</g:mi></g:mrow></g:math> collisions are close to the latest experimental data. The simulation shows that the CME signal is larger in <h:math xmlns:h="http://www.w3.org/1998/Math/MathML"><h:mrow><h:mi>Ru</h:mi><h:mo>+</h:mo><h:mi>Ru</h:mi></h:mrow></h:math> collisions than that in <i:math xmlns:i="http://www.w3.org/1998/Math/MathML"><i:mrow><i:mi>Zr</i:mi><i:mo>+</i:mo><i:mi>Zr</i:mi></i:mrow></i:math> collisions, while the background is smaller, and the upper limit of the CME signal is <j:math xmlns:j="http://www.w3.org/1998/Math/MathML"><j:mrow><j:mn>15</j:mn><j:mo>%</j:mo></j:mrow></j:math> in the isobar collisions.