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Pseudorapidity and transverse momentum dependence of flow harmonics in pPb and PbPb collisions


Abstract

Measurements of azimuthal angular correlations are presented for high-multiplicity $pPb$ collisions at $\sqrt s_{NN}=5.02TeV$ and peripheral PbPb collisions at $\sqrt s _{NN} =2.76TeV$. The data used in this work were collected with the Compact Muon Solenoid (CMS) detector at the European Organization for Nuclear Research (CERN) Large Hadron Collider (LHC). Fourier coefficients as functions of transverse momentum and pseudorapidity are studied using the scalar product method; four-, six-, and eight-particle cumulants; and the Lee-Yang zero technique. The influence of event plane decorrelation is evaluated using the scalar product method and found to account for most of the observed pseudorapidity dependence.

Abstract

Measurements of azimuthal angular correlations are presented for high-multiplicity $pPb$ collisions at $\sqrt s_{NN}=5.02TeV$ and peripheral PbPb collisions at $\sqrt s _{NN} =2.76TeV$. The data used in this work were collected with the Compact Muon Solenoid (CMS) detector at the European Organization for Nuclear Research (CERN) Large Hadron Collider (LHC). Fourier coefficients as functions of transverse momentum and pseudorapidity are studied using the scalar product method; four-, six-, and eight-particle cumulants; and the Lee-Yang zero technique. The influence of event plane decorrelation is evaluated using the scalar product method and found to account for most of the observed pseudorapidity dependence.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2018
Deposited On:19 Feb 2019 14:20
Last Modified:26 Sep 2019 10:06
Publisher:American Physical Society
ISSN:0556-2813
OA Status:Green
Publisher DOI:https://doi.org/10.1103/PhysRevC.98.044902

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