Comment on "Scaling properties of background- and chiral-magnetically-driven charge separation in heavy ion collisions at $\sqrt{s}_{\rm NN}=200$ GeV (arXiv:2203.10029)"

TL;DR

This paper critiques a recent preprint's claim of a multiplicity scaling signal for the chiral magnetic effect, reaffirming the STAR Collaboration's original conclusion that no such signal is observed in their data.

Contribution

It provides a critical analysis of the previous claim, clarifying the validity of the STAR Collaboration's findings regarding the chiral magnetic effect.

Findings

The critique invalidates the multiplicity scaling argument.

Reaffirms the absence of a positive chiral magnetic effect signal in STAR data.

Highlights the fallacy in the previous interpretation of the $R_{ ext{Psi}_2}$ distribution.

Abstract

In a recent preprint arXiv:2203.10029, the authors argue for a multiplicity scaling of the squared inverse width of the $R_{\Psi_{2}}$ distribution to claim a positive signal for the chiral magnetic effect from STAR's isobar data, in stark contradiction to the conclusion reached by the STAR Collaboration. This Comment points out the fallacy of their arguments and reinforces the STAR conclusion.