Yi Lu, Fei Gao, Xiaofeng Luo, Lei Chang, Yuxin Liu
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引用次数: 0
Abstract
We propose a novel criterion to identify the first-order QCD phase transition and the critical end-point (CEP) via directly the net-proton number fluctuations measured in relativistic heavy-ion collision (RHIC) experiments. Using this method, we show that there has not yet been a direct signal of the CEP of QCD according to the currently available data accumulated in the beam energy scan experiments with \(\sqrt{s_{\text{NN}}}\;\geqslant\;7.7\) GeV. However, there is still a possibility for the CEP to appear in the matter generated by the collisions with energy below 7.7 GeV, and its identification requires future measurements with high statistics for the high-order cumulants at low collision energies.
期刊介绍：
Science China Physics, Mechanics & Astronomy, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research.
Science China Physics, Mechanics & Astronomy, is published in both print and electronic forms. It is indexed by Science Citation Index.
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