A simplified model reproduces the observed non-monotonic pT correlation minimum via meson-baryon mixing, showing it is not a reliable signal for the QCD critical point.
Proton number fluctuation as a signal of the QCD critical end-point
2 Pith papers cite this work. Polarity classification is still indexing.
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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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2026 2verdicts
UNVERDICTED 2representative citing papers
NA61/SHINE status report finds no indication of the QCD critical point in heavy-ion collisions via net-charge fluctuations, pion femtoscopy, and hadron intermittency, plus new analysis techniques.
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NA61/SHINE results on search for critical point
NA61/SHINE status report finds no indication of the QCD critical point in heavy-ion collisions via net-charge fluctuations, pion femtoscopy, and hadron intermittency, plus new analysis techniques.