Scholarlink

<p>We investigated the chiral magnetic effect (CME) in relativistic heavy-ion collisions through an improved two-plane method analysis of the <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1761_Article_IEq3.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="26" /> </InlineMediaObject> <EquationSource Format="TEX">\(\Delta \gamma\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi mathvariant="normal">Δ</mi> <mi>γ</mi> </mrow> </math></EquationSource> </InlineEquation> observable, probing <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1761_Article_IEq4.gif" Format="GIF" Height="14" Rendition="HTML" Resolution="72" Type="Linedraw" Width="27" /> </InlineMediaObject> <EquationSource Format="TEX">\(\mathcal{C}\mathcal{P}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi mathvariant="script">C</mi> <mi mathvariant="script">P</mi> </mrow> </math></EquationSource> </InlineEquation>-symmetry breaking in the strong interactions and topological properties of the QCD vacuum. Using a multiphase transport model with tunable CME strengths, we systematically compared the Au+Au and isobar collisions at <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1761_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="90" /> </InlineMediaObject> <EquationSource Format="TEX">\(\sqrt{s_{_\textrm{NN}}} = 200\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msqrt> <mmultiscripts> <mi>s</mi> <mmultiscripts> <mrow /> <mtext>NN</mtext> <mrow /> </mmultiscripts> <mrow /> </mmultiscripts> </msqrt> <mo>=</mo> <mn>200</mn> </mrow> </math></EquationSource> </InlineEquation> GeV. We observed a reduced difference in the CME signal-to-background ratio between the spectator and participant planes for Au+Au collisions compared with isobar collisions. A comprehensive chi-square analysis across all three collision systems revealed stronger CME signatures in Au+Au collisions than in isobar collisions, particularly when measured with respect to the spectator plane. Our findings demonstrate the enhanced experimental reliability of the two-plane method for CME detection in Au+Au collisions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

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

  • 期刊论文

  • 发表日期：

    2025年6月29日

查看全文
  • Bang-Xiang Chen,
  • Xin-Li Zhao,
  • Guo-Liang Ma

摘要

We investigated the chiral magnetic effect (CME) in relativistic heavy-ion collisions through an improved two-plane method analysis of the \(\Delta \gamma\) Δ γ observable, probing \(\mathcal{C}\mathcal{P}\) C P -symmetry breaking in the strong interactions and topological properties of the QCD vacuum. Using a multiphase transport model with tunable CME strengths, we systematically compared the Au+Au and isobar collisions at \(\sqrt{s_{_\textrm{NN}}} = 200\) s NN = 200 GeV. We observed a reduced difference in the CME signal-to-background ratio between the spectator and participant planes for Au+Au collisions compared with isobar collisions. A comprehensive chi-square analysis across all three collision systems revealed stronger CME signatures in Au+Au collisions than in isobar collisions, particularly when measured with respect to the spectator plane. Our findings demonstrate the enhanced experimental reliability of the two-plane method for CME detection in Au+Au collisions.