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Abstract <p>The non-Gaussian fluctuations of conserved quantities, like net baryon number, were proposed recently as a tool for search of the critical end-point of strongly interacting matter. However, studies of the energy dependence of higher-order cumulants of net-protons in A + A collisions at RHIC and SPS have not revealed any convincing evidence of criticality. We argue that in the current analysis the non-dynamical contribution of trivial volume fluctuations are large, and we propose to use the reduced cumulants with the volume of interaction defined for each event.</p>

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Net-Proton High-Order Cumulants in Event-by-Event Studies in High Energy A + A Collisions at NICA

  • 期刊论文

  • 发表日期：

    2026年5月25日

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  • G. A. Feofilov

摘要

Abstract

The non-Gaussian fluctuations of conserved quantities, like net baryon number, were proposed recently as a tool for search of the critical end-point of strongly interacting matter. However, studies of the energy dependence of higher-order cumulants of net-protons in A + A collisions at RHIC and SPS have not revealed any convincing evidence of criticality. We argue that in the current analysis the non-dynamical contribution of trivial volume fluctuations are large, and we propose to use the reduced cumulants with the volume of interaction defined for each event.