Finite-Size Scaling of Non-Gaussian Fluctuations Near the QCD Critical   Point
  An effective Finite-Size Scaling (FSS) of moment products from recent STAR measurements of the variance $\sigma$, skewness $S$ and kurtosis $\kappa$ of net-proton multiplicity distributions, are reported for a broad range of collision centralities in Au+Au ($\sqrt{s_{NN}}= 7.7 - 200$ GeV) collisions. The products $S\sigma $ and $\kappa \sigma^2 $, which are directly related to the hgher-order baryon number susceptibility ratios $\chi^{(3)}_B/\chi^{(2)}_B$ and $\chi^{(4)}_B/\chi^{(2)}_B$, show scaling patterns consistent with earlier indications for a second order phase transition at a critical end point (CEP) in the plane of temperature vs. baryon chemical potential ($T,\mu_B$) of the QCD phase diagram. The resulting scaling functions validate the earlier estimates of $T^{\text{cep}} \sim 165$ MeV and $\mu_B^{\text{cep}} \sim 95$ MeV for the location of the CEP, and the critical exponents used to assign its 3D Ising model universality class. 
Roy A. Lacey (1,2), Peifeng Liu (1,2), Niseem Magdy (1), B. Schweid   (1,2), N. N. Ajitanand (1) ((1) Department of Chemistr...
nucl-ex hep-ex nucl-th