Local baryon conservation in a canonical ensemble drives net-proton κ6/κ2 to small or negative values in restricted acceptance, establishing a baseline that must be subtracted before interpreting signals of chiral criticality.
Baryon number conservation and the cumulants of the net proton distribution
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abstract
We discuss the modification of the cumulants of the net baryon and net proton distributions due to the global conservation of baryon number in heavy-ion collisions. Corresponding probability distributions and their cumulants are derived analytically. We show that the conservation of baryon number results in a substantial decrease of higher order cumulants. Based on our studies, we propose an observable that is insensitive to the modifications due to baryon number conservation.
verdicts
UNVERDICTED 2representative citing papers
Local baryon number conservation induces small baryon-anti-baryon correlations at the second cumulant level, as quantified for the first time and compared to ALICE net-proton fluctuation data.
citing papers explorer
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Canonical statistical hadronization with local baryon conservation for higher-order cumulants
Local baryon conservation in a canonical ensemble drives net-proton κ6/κ2 to small or negative values in restricted acceptance, establishing a baseline that must be subtracted before interpreting signals of chiral criticality.