Sirunyan, AM;
Tumasyan, A;
Adam, W;
Ambrogi, F;
Asilar, E;
Bergauer, T;
Brandstetter, J;
... Caputo, C; + view all
(2019)
Probing the chiral magnetic wave in p Pb nd PbPb collisions at \sqrt{s_{NN}} = 5.02 TeV using charge-dependent azimuthal anisotropies.
Physical Review C
, 100
(6)
, Article 064908. 10.1103/PhysRevC.100.064908.
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Abstract
Collaboration. Charge-dependent anisotropy Fourier coefficients (ν_{n}) of particle azimuthal distributions are measured in p Pb and PbPb collisions at \sqrt{s_{NN}} = 5.02 TeV with the CMS detector at the LHC. The normalized difference in the second-order anisotropy coefficients (ν_{2}) between positively and negatively charged particles is found to depend linearly on the observed event charge asymmetry with comparable slopes for both p Pb and PbPb collisions over a wide range of charged particle multiplicity. In PbPb, the third-order anisotropy coefficient ν_{3} shows a similar linear dependence with the same slope as seen for ν_{2}. The observed similarities between the ν_{2} slopes for p Pb and PbPb, as well as the similar slopes for ν_{2} and ν_{3} in PbPb, are compatible with expectations based on local charge conservation in the decay of clusters or resonances, and constitute a challenge to the hypothesis that, at LHC energies, the observed charge asymmetry dependence of ν_{2} in heavy ion collisions arises from a chiral magnetic wave.
| Type: | Article |
|---|---|
| Title: | Probing the chiral magnetic wave in p Pb nd PbPb collisions at \sqrt{s_{NN}} = 5.02 TeV using charge-dependent azimuthal anisotropies |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevC.100.064908 |
| Publisher version: | https://doi.org/10.1103/PhysRevC.100.064908 |
| Language: | English |
| Additional information: | ©2019 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Chirality, Particle correlations & fluctuations, Relativistic heavy-ion collisions, Nuclear Physics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10097465 |
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