Identity method to study chemical fluctuations in relativistic heavy-ion collisions

TL;DR

The paper introduces the identity method, a new technique that accurately measures chemical fluctuations in heavy-ion collisions by eliminating distortions caused by incomplete particle identification.

Contribution

It presents the identity method, a novel approach that fully removes the effects of incomplete particle identification in fluctuation measurements.

Findings

The identity method effectively corrects for incomplete particle identification.

Application to experimental data demonstrates improved fluctuation analysis.

The method enhances understanding of strongly interacting matter in heavy-ion collisions.

Abstract

Event-by-event fluctuations of the chemical composition of the hadronic final state of relativistic heavy-ion collisions carry valuable information on the properties of strongly interacting matter produced in the collisions. However, in experiments incomplete particle identification distorts the observed fluctuation signals. The effect is quantitatively studied and a new technique for measuring chemical fluctuations, the identity method, is proposed. The method fully eliminates the effect of incomplete particle identification. The application of the identity method to experimental data is explained.