Measurement of Longitudinal Flow Decorrelations in Pb + Pb Collisions at √{s_{NN}} = 2.76 and 5.02 TeV with the ATLAS Detector

dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.authorAaboud, M.en_US
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAbeloos, B.en_US
dc.contributor.authorAbidi, S. H.en_US
dc.contributor.authorAbouZeid, O. S.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorMeirose, Bernharden_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorATLAS Collaborationen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorMeirose, Bernharden_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.date.accessioned2018-11-05T21:05:17Z
dc.date.available2018-11-05T21:05:17Z
dc.date.created2018-02-19en_US
dc.date.issued2018-11-05
dc.description.abstractMeasurements of longitudinal flow correlations are presented for charged particles in the pseudorapidity range |η| < 2.4 using 7 μb⁻¹ and 470 μb⁻¹ of Pb+Pb collisions at √{s_{NN}} = 2.76 and 5.02 TeV, respectively, recorded by the ATLAS detector at the LHC. It is found that the correlation between the harmonic flow coefficients v_n measured in two separated η intervals does not factorise into the product of single-particle coefficients, and this breaking of factorisation, or flow decorrelation, increases linearly with the η separation between the intervals. The flow decorrelation is stronger at 2.76 TeV than at 5.02 TeV. Higher-order moments of the correlations are also measured, and the corresponding linear coefficients for the kth-moment of the v_n are found to be proportional to k for v₃, but not for v₂. The decorrelation effect is separated into contributions from the magnitude of v_n and the event-plane orientation, each as a function of η. These two contributions are found to be comparable. The longitudinal flow correlations are also measured between v_n of different order in n. The decorrelations of v₂ and v₃ are found to be independent of each other, while the decorrelations of v₄ and v₅ are found to be driven by the nonlinear contribution from v₂² and v₂v₃, respectively.en_US
dc.description.departmentSchool of Natural Sciences and Mathematicsen_US
dc.identifier.bibliographicCitationAaboud, M., G. Aad, B. Abbott, O. Abdinov, et al. 2018. "Measurement of longitudinal flow decorrelations in Pb plus Pb collisions at √{s_{NN}} = 2.76 and 5.02 TeV with the ATLAS detector." European Physical Journal C 78(2), doi:10.1140/epjc/s10052-018-5605-7en_US
dc.identifier.issn1434-6044en_US
dc.identifier.issue2en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/6265
dc.identifier.volume78en_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.urihttp://dx.doi.org/10.1140/epjc/s10052-018-5605-7
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2018 CERN, for the ATLAS Collaborationen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceEuropean Physical Journal C
dc.subjectHeavy ion collisionsen_US
dc.subjectCollisions (Nuclear physics)en_US
dc.subjectParticles (Nuclear physics)en_US
dc.subjectViscosityen_US
dc.subjectLead-lead interactionsen_US
dc.titleMeasurement of Longitudinal Flow Decorrelations in Pb + Pb Collisions at √{s_{NN}} = 2.76 and 5.02 TeV with the ATLAS Detectoren_US
dc.type.genrearticleen_US

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
NSM-2307-8523.14.pdf
Size:
2.36 MB
Format:
Adobe Portable Document Format
Description:
Article

Collections