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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
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.
1079-7114
1-17
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
The CMS Collaboration
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

Sirunyan, A.M. and Belyaev, Alexander , 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), 1-17, [092301]. (doi:10.1103/PhysRevLett.120.092301).

Record type: Article

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.

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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
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 22 Mar 2018 17:30
Last modified: 17 Dec 2019 01:44

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