Cumulants from fluctuating width of rapidity distribution

Abstract

In relativistic heavy-ion collisions, the longitudinal fluctuations of the fireball density caused, e.g., by baryon stopping fluctuations result in event-by-event modifications of the shape of the proton rapidity density distribution. The multiparticle rapidity correlation functions due to the varying distribution width of the proton rapidity density in central Au+Au collisions at low energies are derived. The cumulant ratios are calculated and discussed in the context of the recent STAR Collaboration results. We find that the cumulant ratios for small width fluctuations seem to be universal.

24 pages, 11 figures

References in corpus (3)

• The renormalization group and quark number fluctuations in the Polyakov loop extended quark-meson model at finite baryon density
• Longitudinal fluctuations of the fireball density in heavy-ion collisions
• Higher-Order Cumulants and Correlation Functions of Proton Multiplicity Distributions in $\sqrt{s_{\mathrm{NN}}}$ = 3 GeV Au+Au Collisions at the RHIC STAR Experiment

Cited by in corpus (1)

• Rapidity scan approach for net-baryon cumulants with a statistical thermal model