Observation of correlated azimuthal anisotropy Fourier harmonics in pp and p+Pb collisions at the LHC
Observation of correlated azimuthal anisotropy Fourier harmonics in pp and p+Pb collisions at the LHC
The azimuthal anisotropy Fourier coefficients (vn) in 8.16 TeV p + Pb data are extracted via long-range two-particle correlations as a function of the event multiplicity and compared to corresponding results in pp and PbPb collisions. Using a four-particle cumulant technique, vn correlations are measured for the first time in pp and p + Pb collisions. The v2 and v4 coefficients are found to be positively correlated in all collision systems. For high-multiplicity p + Pb collisions, an anticorrelation of v2 and v3 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 p + Pb and PbPb collisions in the measured multiplicity range.
1-17
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
2 March 2018
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Sirunyan, A.M.
,
The CMS Collaboration
(2018)
Observation of correlated azimuthal anisotropy Fourier harmonics in pp and p+Pb collisions at the LHC.
Physical Review Letters, 120 (9), , [092301].
(doi:10.1103/PhysRevLett.120.092301).
Abstract
The azimuthal anisotropy Fourier coefficients (vn) in 8.16 TeV p + Pb data are extracted via long-range two-particle correlations as a function of the event multiplicity and compared to corresponding results in pp and PbPb collisions. Using a four-particle cumulant technique, vn correlations are measured for the first time in pp and p + Pb collisions. The v2 and v4 coefficients are found to be positively correlated in all collision systems. For high-multiplicity p + Pb collisions, an anticorrelation of v2 and v3 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 p + Pb and PbPb collisions in the measured multiplicity range.
Text
PhysRevLett.120.092301
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e-pub ahead of print date: 26 February 2018
Published date: 2 March 2018
Identifiers
Local EPrints ID: 418774
URI: http://eprints.soton.ac.uk/id/eprint/418774
ISSN: 1079-7114
PURE UUID: 1f466263-1c58-4ed8-bcf4-85e6e75a6338
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Date deposited: 22 Mar 2018 17:30
Last modified: 17 Dec 2019 01:44
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Author:
A.M. Sirunyan
Corporate Author: The CMS Collaboration
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