Locating critical point of QCD phase transition basing on finite-size scaling

Lizhu, Chen; Chen, X. S.; Yuanfang, Wu

Locating critical point of QCD phase transition basing on finite-size scaling

Authors

Lizhu, Chen

Chen, X. S.

Yuanfang, Wu

Description

It is argued that in relativistic heavy ion collisions, due to limited size of the formed matter, the reliable criterion of critical point is finite-size scaling, rather than non-monotonous behavior of observable. How to locate critical point by finite-size scaling is proposed. The data of $\pt$ correlation from RHIC/STAR are analyzed. Critical points are likely observed around $\sqrt s =62$ and 200 GeV. They could be, respectively, the transition of deconfinement and chiral symmetry restoration predicted by lattice-QCD. Further confirmation with other observable and energies is suggested.
4 pages, 2 figures