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Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead-lead collisions at √(sNN)=2.76 TeV with the ATLAS detector

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Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead-lead collisions at √(sNN)=2.76 TeV with the ATLAS detector

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dc.contributor.author	ATLAS Collaboration
dc.contributor.author	Mitsou, Vasiliki
dc.contributor.author	Fuster Verdú, Juan A.
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Cabrera Urbán, Susana
dc.contributor.author	García García, Carmen
dc.contributor.author	Higón Rodríguez, Emilio
dc.contributor.author	Martí García, Salvador
dc.contributor.author	Ros Martínez, Eduardo
dc.contributor.author	González de la Hoz, Santiago
dc.contributor.author	Salt Cairols, José
dc.contributor.author	Valls Ferrer, Juan Antonio
dc.contributor.author	Kaci, Mohammed
dc.contributor.author	Fiorini, Luca
dc.contributor.author	Hernández Jiménez, Yesenia
dc.contributor.author	Lacasta Llácer, Carlos
dc.contributor.author	Villaplana Pérez, Miguel
dc.date.accessioned	2014-06-23T07:28:27Z
dc.date.available	2014-06-23T07:28:27Z
dc.date.issued	2012
dc.identifier.citation	ATLAS Collaboration Mitsou, Vasiliki Fuster Verdú, Juan A. Ferrer Soria, Antonio Castillo Giménez, María Victoria Cabrera Urbán, Susana García García, Carmen Higón Rodríguez, Emilio Martí García, Salvador Ros Martínez, Eduardo González de la Hoz, Santiago Salt Cairols, José Valls Ferrer, Juan Antonio Kaci, Mohammed Fiorini, Luca Hernández Jiménez, Yesenia Lacasta Llácer, Carlos Villaplana Pérez, Miguel 2012 Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead-lead collisions at √(sNN)=2.76 TeV with the ATLAS detector Physics Letters B 710 3 363 382
dc.identifier.uri	http://hdl.handle.net/10550/36275
dc.description.abstract	The ATLAS experiment at the LHC has measured the centrality dependence of charged particle pseudorapidity distributions over vertical bar eta vertical bar < 2 in lead-lead collisions at a nucleon-nucleon centre-of-mass energy of root s(NN) = 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 < vertical bar eta vertical bar< 4.9. Measurements are presented of the per-event charged particle pseudorapidity distribution, dN(ch)/d eta, and the average charged particle multiplicity in the pseudorapidity interval vertical bar eta vertical bar < 0.5 in several intervals of collision centrality. The results are compared to previous mid-rapidity 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 root s(NN) results. The shape of the dN(ch)/d eta distribution is found to be independent of centrality within the systematic uncertainties of the measurement.
dc.relation.ispartof	Physics Letters B, 2012, vol. 710, num. 3, p. 363-382
dc.subject	Partícules (Física nuclear)
dc.subject	Acceleradors de partícules
dc.subject	Detectors de radiació
dc.title	Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead-lead collisions at √(sNN)=2.76 TeV with the ATLAS detector
dc.type	journal article	es_ES
dc.date.updated	2014-06-23T07:28:27Z
dc.identifier.doi	10.1016/j.physletb.2012.02.045
dc.identifier.idgrec	083439
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1016/j.physletb.2012.02.045