Measurement of Flow Harmonics with Multi-Particle Cumulants in Pb + Pb Collisions at √{S_{NN}} = 2.76 TeV with the ATLAS Detector

Simple item page
dc.contributor.ORCID0000-0003-0867-2189 (Lou, X)
dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdallah, J.en_US
dc.contributor.authorAbdel Khalek, S.en_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAben, R.en_US
dc.contributor.authorAbi, B.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorLeyton, Michaelen_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorNamasivayam, Harisankaren_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorATLAS Collaborationen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorLeyton, Michaelen_US
dc.contributor.utdAuthorNamasivayam, Harisankaren_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.date.accessioned2015-03-25T19:03:33Z
dc.date.available2015-03-25T19:03:33Z
dc.date.created2014-11-26en_US
dc.date.issued2014-11-26en_US
dc.description.abstractATLAS measurements of the azimuthal anisotropy in lead-lead collisions at √sNN = 2.76 TeV are shown using a dataset of approximately 7 μb⁻¹ collected at the LHC in 2010. The measurements are performed for charged particles with transverse momenta 0.5 < p_T < 20 GeV and in the pseudorapidity range |η| < 2.5. The anisotropy is characterized by the Fourier coefficients, v_n, of the charged-particle azimuthal angle distribution for n = 2-4. The Fourier coefficients are evaluated using multi-particle cumulants calculated with the generating function method. Results on the transverse momentum, pseudorapidity and centrality dependence of the v_n coefficients are presented. The elliptic flow, v₂, is obtained from the two-, four-, six- and eight-particle cumulants while higher-order coefficients, v₃ and v₄, are determined with two-and four-particle cumulants. Flow harmonics v(n) measured with four-particle cumulants are significantly reduced compared to the measurement involving two-particle cumulants. A comparison to v_n measurements obtained using different analysis methods and previously reported by the LHC experiments is also shown. Results of measurements of flow fluctuations evaluated with multiparticle cumulants are shown as a function of transverse momentum and the collision centrality. Models of the initial spatial geometry and its fluctuations fail to describe the flow fluctuations measurements.en_US
dc.identifier.bibliographicCitationAad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, et al. 2014. "Measurement of flow harmonics with multi-particle cumulants in Pb + Pb collisions at √{S_{NN}} = 2.76 TeV with the ATLAS detector." European Physical Journal C 74(3157), doi:10.1140/epjc/s10052-014-3157-z.en_US
dc.identifier.issn1434-6044en_US
dc.identifier.issue3157en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4366
dc.identifier.volume74en_US
dc.language.isoen_USen_US
dc.publisherSpringeren_US
dc.relation.urihttp://dx.doi.org/10.1140/epjc/s10052-014-3157-z
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2014 CERN, for the ATLAS Collaborationen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceEuropean Physical Journal C
dc.subjectLead-lead interactionsen_US
dc.subjectFlow harmonicsen_US
dc.subjectCumulantsen_US
dc.subjectVelocityen_US
dc.subjectTransverse momentum (Physics)en_US
dc.titleMeasurement of Flow Harmonics with Multi-Particle Cumulants in Pb + Pb Collisions at √{S_{NN}} = 2.76 TeV with the ATLAS Detectoren_US
dc.typeTexten_US
dc.type.genreArticleen_US

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
NSM-2307-271939.08.pdf
Size:
2.29 MB
Format:
Adobe Portable Document Format
Description:
Article
Download

Collections

Izen, Joseph M.
Lou, Xinchou
NSM Staff-Student Research