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Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC

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Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC

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dc.contributor.author	ATLAS Collaboration
dc.contributor.author	Mitsou, Vasiliki
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Valls Ferrer, Juan Antonio
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Cabrera Urbán, Susana
dc.contributor.author	Fuster Verdú, Juan A.
dc.contributor.author	Fiorini, Luca
dc.contributor.author	Ros Martínez, Eduardo
dc.contributor.author	Hernández Jiménez, Yesenia
dc.contributor.author	Lacasta Llácer, Carlos
dc.contributor.author	Higón Rodríguez, Emilio
dc.contributor.author	Salt Cairols, José
dc.contributor.author	González de la Hoz, Santiago
dc.contributor.author	García García, Carmen
dc.contributor.author	Martí García, Salvador
dc.contributor.author	Villaplana Pérez, Miguel
dc.contributor.author	Lacuesta Miquel, Vicente
dc.date.accessioned	2014-05-26T12:31:30Z
dc.date.available	2014-05-26T12:31:30Z
dc.date.issued	2011
dc.identifier.citation	ATLAS Collaboration Mitsou, Vasiliki Ferrer Soria, Antonio Valls Ferrer, Juan Antonio Castillo Giménez, María Victoria Cabrera Urbán, Susana Fuster Verdú, Juan A. Fiorini, Luca Ros Martínez, Eduardo Hernández Jiménez, Yesenia Lacasta Llácer, Carlos Higón Rodríguez, Emilio Salt Cairols, José González de la Hoz, Santiago García García, Carmen Martí García, Salvador Villaplana Pérez, Miguel Lacuesta Miquel, Vicente 2011 Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC New Journal of Physics 13 053033 1 69
dc.identifier.uri	http://hdl.handle.net/10550/35455
dc.description.abstract	Measurements are presented from proton-proton collisions at centre-of-mass energies of root s = 0.9, 2.36 and 7 TeV recorded with the ATLAS detector at the LHC. Events were collected using a single-arm minimum-bias trigger. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity and the relationship between the mean transverse momentum and charged-particle multiplicity are measured. Measurements in different regions of phase space are shown, providing diffraction-reduced measurements as well as more inclusive ones. The observed distributions are corrected to well-defined phase-space regions, using model-independent corrections. The results are compared to each other and to various Monte Carlo (MC) models, including a new AMBT1 pythia6 tune. In all the kinematic regions considered, the particle multiplicities are higher than predicted by the MC models. The central charged-particle multiplicity per event and unit of pseudorapidity, for tracks with p(T) > 100 MeV, is measured to be 3.483 +/- 0.009 (stat) +/- 0.106 (syst) at root s = 0.9 TeV and 5.630 +/- 0.003 (stat) +/- 0.169 (syst) at root s = 7 TeV.
dc.relation.ispartof	New Journal of Physics, 2011, vol. 13, num. 053033, p. 1-69
dc.subject	Física nuclear
dc.title	Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC
dc.type	journal article	es_ES
dc.date.updated	2014-05-26T12:31:30Z
dc.identifier.doi	10.1088/1367-2630/13/5/053033
dc.identifier.idgrec	068190
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1088/1367-2630/13/5/053033