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Article
Report number arXiv:1805.04367 ; CERN-EP-2018-119
Title Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p-Pb Collisions at sNN = 5.02 TeV
Author(s) ALICE Collaboration  Show all 1016 authors
Publication 2019-02-22
Imprint 08 May 2018
Number of pages 13
Note 18 pages, 3 figures, authors from page 13, submitted to PRL, figures at http://aliceinfo.cern.ch/ArtSubmission/node/4281
In: Phys. Rev. Lett. 122 (2019) 072301
DOI 10.1103/PhysRevLett.122.072301
Subject category Nuclear Physics - Experiment ; hep-ex ; Particle Physics - Experiment ; nucl-ex
Accelerator/Facility, Experiment CERN LHC ; ALICE
Free keywords relativistic heavy ion physics ; quark gluon plasma ; collective flow ; experimental results
Abstract Angular correlations between heavy-flavour decay electrons and charged particles at mid-rapidity (|η| < 0.8) are measured in p-Pb collisions at sNN = 5.02 TeV. The analysis is carried out for the 0-20% (high) and 60-100% (low) multiplicity ranges. The jet contribution in the correlation distribution from high-multiplicity events is removed by subtracting the distribution from low-multiplicity events. An azimuthal modulation remains after removing the jet contribution, similar to previous observations in two-particle angular correlation measurements for light-flavour hadrons. A Fourier decomposition of the modulation results in a positive second-order coefficient (v2) for heavy-flavour decay electrons in the transverse momentum interval 1.5 < pT < 4 GeV/c in high-multiplicity events, with a significance larger than 5σ. The results are compared with those of charged particles at mid-rapidity and of inclusive muons at forward rapidity. The v2 measurement of open heavy-flavour particles at mid-rapidity in small collision systems could provide crucial information to help interpret the anisotropies observed in such systems.
Copyright/License preprint: © 2018-2025 CERN (License: CC-BY-4.0)
publication: © 2019-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: david.dobrigkeit.chinellato@cern.ch


 Record created 2018-05-08, last modified 2025-01-14


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