Tu, Z;
Sirunyan, AM;
Tumasyan, A;
Adam, W;
Ambrogi, F;
Asilar, E;
Bergauer, T;
... Woods, N; + view all
(2019)
Search for the chiral magnetic effect at the LHC with the CMS experiment.
Nuclear Physics A
, 982
pp. 527-530.
10.1016/j.nuclphysa.2018.08.032.
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Abstract
Searches for the chiral magnetic effect (CME) using charge-dependent azimuthal correlations with respect to event planes are presented in PbPb collisions at 5.02 TeV and pPb collisions at 5.02 and 8.16 TeV, with the CMS experiment at the LHC. The azimuthal correlations with respect to the second- and third-order event planes are explored as a function of pseudorapidity, transverse momentum, and event multiplicity, which provides new insights into the underlying background correlations. By employing an event-shape engineering technique, a linear dependence of charge-dependent correlations on the second-order anisotropy flow (ν2) is observed, and the upper limits on the ν2-independent fraction, which is directly related to the CME signal, are obtained at 95% confidence level for both pPb and PbPb collisions. These results provide strong constraints on the search for the chiral magnetic effect at LHC energies, and establish new guidelines for searches in future experiments.
| Type: | Article |
|---|---|
| Title: | Search for the chiral magnetic effect at the LHC with the CMS experiment |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.nuclphysa.2018.08.032 |
| Publisher version: | http://doi.org/10.1016/j.nuclphysa.2018.08.032 |
| Language: | English |
| Additional information: | Copyright © 2018 Published by Elsevier B.V. www.elsevier.com/locate/nuclphysa This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| Keywords: | CME, Small Systems, Particle Correlation, Event Shape Engineering |
| UCL classification: | UCL 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-pp.ucl.ac.uk/id/eprint/10072897 |
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