Measurement of the correlation between flow harmonics of different order in lead-lead collisions at √sNN = 2.76 TeV with the ATLAS detector

Correlations between the elliptic or triangular flow coefficients υm(m = 2 or 3) and other flow harmonics υn(n = 2 to 5) are measured using√sNN = 2.76 TeV Pb + Pb collision data collected in 2010 by the ATLAS experiment at the LHC, corresponding to an integrated luminosity of 7 μb−1. The υm-υncorrel...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Física
Flow coefficients
Flow harmonics
Collision data
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86904
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86904
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Flow coefficients
Flow harmonics
Collision data
spellingShingle Física
Flow coefficients
Flow harmonics
Collision data
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
The ATLAS Collaboration
Measurement of the correlation between flow harmonics of different order in lead-lead collisions at √sNN = 2.76 TeV with the ATLAS detector
topic_facet Física
Flow coefficients
Flow harmonics
Collision data
description Correlations between the elliptic or triangular flow coefficients υm(m = 2 or 3) and other flow harmonics υn(n = 2 to 5) are measured using√sNN = 2.76 TeV Pb + Pb collision data collected in 2010 by the ATLAS experiment at the LHC, corresponding to an integrated luminosity of 7 μb−1. The υm-υncorrelations aremeasured in midrapidity as a function of centrality, and, for events within the same centrality interval, as a function of event ellipticity or triangularity defined in a forward rapidity region. For events within the same centrality interval, υ3is found to be anticorrelated with υ2and this anticorrelation is consistent with similar anticorrelations between the corresponding eccentricities, ϵ2and ϵ3. However, it is observed that υ4increases strongly with υ2, and υ5increases strongly with both υ2and υ3. The trend and strength of the υm-υncorrelations for n = 4 and 5 are found to disagree with ϵm-ϵncorrelations predicted by initial-geometry models. Instead, these correlations are found to be consistent with the combined effects of a linear contribution to υnand a nonlinear term that is a function of υ2 2or of υ2υ3, as predicted by hydrodynamic models. A simple two-component fit is used to separate these two contributions. The extracted linear and nonlinear contributions to υ4and υ5are found to be consistent with previously measured event-plane correlations.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurement of the correlation between flow harmonics of different order in lead-lead collisions at √sNN = 2.76 TeV with the ATLAS detector
title_short Measurement of the correlation between flow harmonics of different order in lead-lead collisions at √sNN = 2.76 TeV with the ATLAS detector
title_full Measurement of the correlation between flow harmonics of different order in lead-lead collisions at √sNN = 2.76 TeV with the ATLAS detector
title_fullStr Measurement of the correlation between flow harmonics of different order in lead-lead collisions at √sNN = 2.76 TeV with the ATLAS detector
title_full_unstemmed Measurement of the correlation between flow harmonics of different order in lead-lead collisions at √sNN = 2.76 TeV with the ATLAS detector
title_sort measurement of the correlation between flow harmonics of different order in lead-lead collisions at √snn = 2.76 tev with the atlas detector
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/86904
work_keys_str_mv AT alconadaverzinimariajosefina measurementofthecorrelationbetweenflowharmonicsofdifferentorderinleadleadcollisionsatsnn276tevwiththeatlasdetector
AT alonsofrancisco measurementofthecorrelationbetweenflowharmonicsofdifferentorderinleadleadcollisionsatsnn276tevwiththeatlasdetector
AT anduagaxabiersebastian measurementofthecorrelationbetweenflowharmonicsofdifferentorderinleadleadcollisionsatsnn276tevwiththeatlasdetector
AT dovamariateresa measurementofthecorrelationbetweenflowharmonicsofdifferentorderinleadleadcollisionsatsnn276tevwiththeatlasdetector
AT theatlascollaboration measurementofthecorrelationbetweenflowharmonicsofdifferentorderinleadleadcollisionsatsnn276tevwiththeatlasdetector
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