اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدQuantification of the Chiral Magnetic Effect in Au+Au collisions at $sqrt{s_{mathrm{NN}}}=200$ GeV
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The Multi-Phase Transport model, AMPT, and the Anomalous Viscous Fluid Dynamics model, AVFD, are used to assess a possible chiral-magnetically-driven charge separation ($Delta S$) recently measured with the ${R_{Psi_2}(Delta S)}$ correlator in Au+Au collisions at $sqrt{s_{mathrm{NN}}}=200$ GeV. The Comparison of the experimental and simulated ${R_{Psi_2}(Delta S)}$ distributions indicates that background-driven charge separation is insufficient to account for the measurements. The AVFD model calculations, which explicitly account for CME-driven anomalous transport in the presence of background, indicate a CME signal quantified by the $P$-odd Fourier dipole coefficient ${a_1}approx 0.5%$ in mid-central collisions. A similar evaluation for the $Deltagamma$ correlator suggests that only a small fraction of this signal ($f_{rm CME}=Deltagamma_{rm CME}/Deltagamma approx 25%$) is measurable with this correlator in the same collisions. The related prediction for signal detection in isobaric collisions of Ru+Ru and Zr+Zr are also presented.
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Quark interactions with topological gluon configurations can induce local chirality imbalance and parity violation in quantum chromodynamics, which can lead to the chiral magnetic effect (CME) -- an electric charge separation along the strong magneti
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