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We present a systematic comparison between the recently measured cumulants ofthe net-proton distributions by STAR for 0-5% central Au+Au collisions at$\sqrt{s_{NN}}$=7.7-200 GeV and two kinds of possible baseline measures, thePoisson and Binomial baselines. These baseline measures are assuming that theproton and anti-proton distributions independently follow Poisson statistics orBinomial statistics. The higher order cumulant net-proton data are observed todeviate from all the baseline measures studied at 19.6 and 27 GeV. We alsocompare the net-proton with net-baryon fluctuations in UrQMD and AMPT model,and convert the net-proton fluctuations to net-baryon fluctuations in AMPTmodel by using a set of formula.

Baseline for the cumulants of net-proton distributions at STAR