Author
Tu, Z., Sirunyan, A. M., Işıldak, Bora
Publication Date
2019-02
Publication Place
-
Elsevier
Subject
CME, Small system, Particle correlation, Event shape engineering
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0375-9474
Record ID
cade97bb-34f4-4f62-bc1e-cdc0757b25b0
Library Location
Natural and Mathematical Sciences
Date
2019-02
Sample Text
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 (nu(2)) is observed, and the upper limits on the nu(2)-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.
DOI
10.1016/j.nuclphysa.2018.08.032
Cilt
982
