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arXiv · hep-ph/0302002

Proton number fluctuation as a signal of the QCD critical end-point

Y. Hatta·M. A. Stephanov
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Abstract

We argue that the event-by-event fluctuation of the proton number is a meaningful and promising observable for the purpose of detecting the QCD critical end-point in heavy-ion collision experiments. The long range fluctuation of the order parameter induces a characteristic correlation between protons which can be measured. The proton fluctuation also manifests itself as anomalous enhancement of charge fluctuations near the end-point, which might be already seen in existing data.

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Y. Hatta, M. A. Stephanov. 2003-08-29. Proton number fluctuation as a signal of the QCD critical end-point. https://doi.org/10.1103/physrevlett.91.129901

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