Observation of Correlated Azimuthal Anisotropy Fourier Harmonics in $pp$ and $p+Pb$ Collisions at the LHC - INSPIRE

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Observation of Correlated Azimuthal Anisotropy Fourier Harmonics in $pp$ and $p+Pb$ Collisions at the LHC

CMS

Collaboration

Sep 26, 2017

17 pages

Published in:

Phys.Rev.Lett. 120 (2018) 9, 092301

Published: Feb 27, 2018

e-Print:

1709.09189 [nucl-ex]

DOI:

10.1103/PhysRevLett.120.092301

Report number:

CMS-HIN-16-022,
CERN-EP-2017-220

Experiments:

CERN-LHC-CMS

View in:

reference search114 citations

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Abstract: (APS)

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.

Note:

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-16-022 (CMS Public Pages)

angular distribution: anisotropy
correlation: two-particle
p p: scattering
p nucleus: scattering
multiplicity: high
CERN LHC Coll
long-range
flow
CMS
experimental results

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