Charge-dependent flow and the search for the chiral magnetic wave in Pb-Pb collisions at √<i>S<sub>NN</sub></i>=2.76 TeV



Adam, J, Adamova, D, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahn, SU, Aiola, S, Akindinov, A
et al (show 985 more authors) (2016) Charge-dependent flow and the search for the chiral magnetic wave in Pb-Pb collisions at √<i>S<sub>NN</sub></i>=2.76 TeV. PHYSICAL REVIEW C, 93 (4). 044903-.

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Abstract

We report on measurements of a charge-dependent flow using a novel three-particle correlator with ALICE in Pb-Pb collisions at the CERN Large Hadron Collider (LHC), and discuss the implications for observation of local parity violation and the chiral magnetic wave (CMW) in heavy-ion collisions. Charge-dependent flow is reported for different collision centralities as a function of the event charge asymmetry. While our results are in qualitative agreement with expectations based on the CMW, the nonzero signal observed in higher harmonics correlations indicates a possible significant background contribution. We also present results on a differential correlator, where the flow of positive and negative charges is reported as a function of the mean charge of the particles and their pseudorapidity separation. We argue that this differential correlator is better suited to distinguish the differences in positive and negative charges expected due to the CMW and the background effects, such as local charge conservation coupled with strong radial and anisotropic flow.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 13 Jul 2016 11:07
Last Modified: 14 Mar 2024 21:21
DOI: 10.1103/PhysRevC.93.044903
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3002299

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