Abstract
The azimuthal anisotropy Fourier coefficients () in 8.16 TeV data are extracted via long-range two-particle correlations as a function of the event multiplicity and compared to corresponding results in and PbPb collisions. Using a four-particle cumulant technique, correlations are measured for the first time in and collisions. The and coefficients are found to be positively correlated in all collision systems. For high-multiplicity collisions, an anticorrelation of and is observed, with a similar correlation strength as in PbPb data at the same multiplicity. The new correlation results strengthen the case for a common origin of the collectivity seen in and PbPb collisions in the measured multiplicity range.
- Received 26 September 2017
- Revised 6 December 2017
DOI:https://doi.org/10.1103/PhysRevLett.120.092301
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
© 2018 CERN, for the CMS Collaboration