Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at √ sNN = 2.76 TeV with the ATLAS detector

ATLAS measurements of the azimuthal anisotropy in lead–lead collisions at √ sNN = 2.76 TeV are shown using a dataset of approximately 7μb−1 collected at the LHC in 2010. The measurements are performed for charged particles with transversemomenta 0.5 < pT < 20 GeV and in the pseudorapidity rang...

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Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Exactas
Física
lead-lead collisions
large hadron collider
Anisotropía
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/78931
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-78931
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
lead-lead collisions
large hadron collider
Anisotropía
spellingShingle Ciencias Exactas
Física
lead-lead collisions
large hadron collider
Anisotropía
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at √ sNN = 2.76 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
lead-lead collisions
large hadron collider
Anisotropía
description ATLAS measurements of the azimuthal anisotropy in lead–lead collisions at √ sNN = 2.76 TeV are shown using a dataset of approximately 7μb−1 collected at the LHC in 2010. The measurements are performed for charged particles with transversemomenta 0.5 < pT < 20 GeV and in the pseudorapidity range |η| < 2.5. The anisotropy is characterized by the Fourier coefficients, vn, 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 vn 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 vn measured with four-particle cumulants are significantly reduced compared to the measurement involving two-particle cumulants. A comparison to vn 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.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at √ sNN = 2.76 TeV with the ATLAS detector
title_short Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at √ sNN = 2.76 TeV with the ATLAS detector
title_full Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at √ sNN = 2.76 TeV with the ATLAS detector
title_fullStr Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at √ sNN = 2.76 TeV with the ATLAS detector
title_full_unstemmed Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at √ sNN = 2.76 TeV with the ATLAS detector
title_sort measurement of flow harmonics with multi-particle cumulants in pb+pb collisions at √ snn = 2.76 tev with the atlas detector
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/78931
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