Mixed harmonic azimuthal correlations in Pb--Pb collisions at \sqrt{s_{NN}}=2.76TeV measured with the ALICE experiment at the LHC

TL;DR

This paper reports measurements of mixed harmonic charge-dependent azimuthal correlations in Pb-Pb collisions at 2.76 TeV, providing insights into local parity violation and charge conservation effects in QCD.

Contribution

It presents the first detailed measurement of charge-dependent mixed harmonic azimuthal correlations in heavy-ion collisions at the LHC.

Findings

Charge dependence observed in correlations using multi-particle cumulant and event plane methods.

Results have implications for local parity violation and charge conservation models.

Data supports the presence of azimuthal anisotropic flow effects.

Abstract

Mixed harmonic charge dependent azimuthal correlations at mid-rapidity in Pb-Pb collisions at \sqrt{s_{NN}} = 2.76 TeV were measured with the ALICE detector at the LHC. A clear charge dependence for a series of correlations is observed both via the multi-particle cumulant and the event plane methods. Implications from these measurements for the possible effects of local parity violation in QCD and for models which incorporate azimuthal anisotropic flow and "effective" local charge conservation on the kinetic freeze-out surface are discussed.