Suppression of elliptic-flow-induced correlations in an observable of possible local parity violation

preprint2012arXivOpen access

Abstract

We show that fluctuations in elliptic anisotropy in heavy-ion collisions can be used to significantly reduce the contribution of transverse-momentum conservation, and of all background effects independent on the orientation of the reaction plane, from an observable of the chiral magnetic effect. We argue that for a given impact parameter, the magnetic field is approximately independent of the fluctuating shape of the fireball.

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