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          Institute: MPI für Physik     Collection: YB 2016     Display Documents



ID: 716309.0, MPI für Physik / YB 2016
Isolation of Flow and Nonflow Correlations by Two- and Four-Particle Cumulant Measurements of Azimuthal Harmonics in sqrt{s_NN} = 200 GeV Au+Au Collisions
Authors:STAR Collaboration; Abdelwahab, N. M.; Schmitz, N.; Seyboth, P.; et al.
Date of Publication (YYYY-MM-DD):2015
Title of Journal:Physics Letters B
Journal Abbrev.:Phys.Lett.B
Issue / Number:745
Start Page:40
End Page:47
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:A data-driven method was applied to measurements of Au+Au collisions at sqrt{s_NN} =$ 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance \\Delta\\eta-dependent and \\Delta\\eta-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a component of the correlation that is \\Delta\\eta-independent, which is likely dominated by anisotropic flow and flow fluctuations. It was also found to be independent of \\eta within the measured range of pseudorapidity |\\eta|<1. The relative flow fluctuation was found to be 34\\% \\pm 2\\% (stat.) \\pm 3\\% (sys.) for particles of transverse momentum p_{T} less than 2 GeV/c. The \\Delta\\eta-dependent part may be attributed to nonflow correlations, and is found to be 5\\% \\pm 2\\% (sys.) relative to the flow of the measured second harmonic cumulant at |\\Delta\\eta| > 0.7.
Classification / Thesaurus:STAR
External Publication Status:published
Document Type:Article
Communicated by:MPI für Physik
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2015-349
URL:http://inspirehep.net/search?p=find+eprint+1409.20...
URL:http://arXiv.org/abs/arxiv:1409.2043
URL:https://publications.mppmu.mpg.de/?action=search&m...
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