Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead–lead collisions at √s<sub>NN</sub> = 2.76 TeV with the ATLAS detector

The ATLAS experiment at the LHC has measured the centrality dependence of charged particle pseudorapidity distributions over |η| < 2 in lead–lead collisions at a nucleon–nucleon centre-of-mass energy of √s<sub>NN</sub> = 2.76 TeV. In order to include particles with transverse momentum...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F., The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Exactas
Física
Dependencia
Medición
Partículas Elementales
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/80259
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-80259
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
Dependencia
Medición
Partículas Elementales
spellingShingle Ciencias Exactas
Física
Dependencia
Medición
Partículas Elementales
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead–lead collisions at √s<sub>NN</sub> = 2.76 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
Dependencia
Medición
Partículas Elementales
description The ATLAS experiment at the LHC has measured the centrality dependence of charged particle pseudorapidity distributions over |η| < 2 in lead–lead collisions at a nucleon–nucleon centre-of-mass energy of √s<sub>NN</sub> = 2.76 TeV. In order to include particles with transverse momentum as low as 30 MeV, the data were recorded with the central solenoid magnet off. Charged particles were reconstructed with two algorithms (2-point “tracklets” and full tracks) using information from the pixel detector only. The lead–lead collision centrality was characterized by the total transverse energy in the forward calorimeter in the range 3.2 < |η| < 4.9. Measurements are presented of the per-event charged particle pseudorapidity distribution, dN<sub>ch</sub>/dη, and the average charged particle multiplicity in the pseudorapidity interval |η| < 0.5 in several intervals of collision centrality. The results are compared to previous midrapidity measurements at the LHC and RHIC. The variation of the mid-rapidity charged particle yield per colliding nucleon pair with the number of participants is consistent with lower √s<sub>NN</sub> results. The shape of the dN<sub>ch</sub>/dη distribution is found to be independent of centrality within the systematic uncertainties of the measurement.
format Articulo
Articulo
author Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_facet Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_sort Anduaga, Xabier Sebastián
title Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead–lead collisions at √s<sub>NN</sub> = 2.76 TeV with the ATLAS detector
title_short Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead–lead collisions at √s<sub>NN</sub> = 2.76 TeV with the ATLAS detector
title_full Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead–lead collisions at √s<sub>NN</sub> = 2.76 TeV with the ATLAS detector
title_fullStr Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead–lead collisions at √s<sub>NN</sub> = 2.76 TeV with the ATLAS detector
title_full_unstemmed Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead–lead collisions at √s<sub>NN</sub> = 2.76 TeV with the ATLAS detector
title_sort measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead–lead collisions at √s<sub>nn</sub> = 2.76 tev with the atlas detector
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/80259
work_keys_str_mv AT anduagaxabiersebastian measurementofthecentralitydependenceofthechargedparticlepseudorapiditydistributioninleadleadcollisionsatssubnnsub276tevwiththeatlasdetector
AT dovamariateresa measurementofthecentralitydependenceofthechargedparticlepseudorapiditydistributioninleadleadcollisionsatssubnnsub276tevwiththeatlasdetector
AT monticellifernandogabriel measurementofthecentralitydependenceofthechargedparticlepseudorapiditydistributioninleadleadcollisionsatssubnnsub276tevwiththeatlasdetector
AT tripianamartinf measurementofthecentralitydependenceofthechargedparticlepseudorapiditydistributioninleadleadcollisionsatssubnnsub276tevwiththeatlasdetector
AT theatlascollaboration measurementofthecentralitydependenceofthechargedparticlepseudorapiditydistributioninleadleadcollisionsatssubnnsub276tevwiththeatlasdetector
bdutipo_str Repositorios
_version_ 1764820486726877184

Ejemplares similares