Dilepton Emission as a Probe of QCD Critical Point
Analysis
This paper proposes using dilepton emission rates (DER) as a novel probe to identify the QCD critical point in heavy-ion collisions. The authors utilize an extended Polyakov-quark-meson model to simulate dilepton production and chiral transition. The study suggests that DER fluctuations are more sensitive to the critical point's location compared to baryon number fluctuations, making it a potentially valuable experimental observable. The paper also acknowledges the current limitations in experimental data and proposes a method to analyze the baseline-subtracted DER.
Key Takeaways
Reference
“The DER fluctuations are found to be more drastic in the critical region and more sensitive to the relative location of the critical point.”