期刊论文

Luo, Xiaofeng

英文

Nuclear Physics A

0375-9474

2014

931

808-813

10.1016/j.nuclphysa.2014.08.105

National Key Basic Research ProgramNational Basic Research Program of China [2015CB856900]; NSFCNational Natural Science Foundation of China (NSFC) [11205067, 11221504, 11228513]; China Post-doctoral Science FoundationChina Postdoctoral Science Foundation [2012M511237, 2013T60732]

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We present a systematic comparison between the recently measured cumulants of the net-proton distributions by STAR for 0-5% central Au + Au collisions at root S-NN = 7.7-200 GeV and two kinds of possible baseline measure, the Poisson and Binomial baselines. These baseline measures are assuming that the proton and anti-proton distributions independently follow Poisson statistics or Binomial statistics. The higher order cumulant net-proton data are observed to deviate from all the baseline measures studied at 19.6 and 27 GeV. We also compare the net-proton with net-baryon fluctuations in UrQMD a...