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

Understand

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.