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تسجيل مستخدم جديدCharge Dependence and Scaling Properties of Dynamical $K/pi$, $p/pi$, and $K/p$ Fluctuations from the STAR Experiment
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Terence J. Tarnowsky
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Dynamical fluctuations in global conserved quantities such as baryon number, strangeness, or charge may be enhanced near a QCD critical point. Charge dependent results from new measurements of dynamical $K/pi$, $p/pi$, and $K/p$ ratio fluctuations are presented. The STAR experiment has performed a comprehensive study of the energy dependence of these dynamical fluctuations in Au+Au collisions at the energies $sqrt{s_{NN}}$ = 7.7-200 GeV using the observable, $ u_{rm dyn}$. These results are compared to previous measurements and to theoretical predictions. Various proposed scaling scenarios that attempt to remove the intrinsic volume dependence of $ u_{rm dyn}$ and to simplify comparisons between experimental measurements are also considered. Constructing an intensive quantity allows for a direct connection to thermodynamic predictions.
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