Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC
Measurements are presented from proton-proton collisions at centre-of-mass energies of s = 0.9, 2.36 and 7 TeV recorded with the ATLAS detector at the LHC. Events were collected using a single-arm minimumbias trigger. The charged-particle multiplicity, its dependence on transverse momentum and pseud...
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2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13672630_v13_n_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_13672630_v13_n_p_Multitudinario |
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paper:paper_13672630_v13_n_p_Multitudinario2023-06-08T16:12:06Z Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC High energy physics Phase space methods Tellurium compounds Centre-of-mass energies Charged particle multiplicities Model independent Particle multiplicity Phase space regions Proton proton collisions Pseudorapidities Transverse momenta Charged particles Measurements are presented from proton-proton collisions at centre-of-mass energies of s = 0.9, 2.36 and 7 TeV recorded with the ATLAS detector at the LHC. Events were collected using a single-arm minimumbias 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 pT < 100 MeV, is measured to be 3.483±0.009 (stat)±0.106 (syst) at s = 0.9 TeV and 5.630±0.003 (stat)±0.169 (syst) at s = 7 TeV. © 2011 CERN for the benefit of the ATLAS Collaboration, published under licence by IOP Publishing Ltd for the Institute of Physics and Deutsche Physikalische Gesellschaft. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13672630_v13_n_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_13672630_v13_n_p_Multitudinario |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
High energy physics Phase space methods Tellurium compounds Centre-of-mass energies Charged particle multiplicities Model independent Particle multiplicity Phase space regions Proton proton collisions Pseudorapidities Transverse momenta Charged particles |
| spellingShingle |
High energy physics Phase space methods Tellurium compounds Centre-of-mass energies Charged particle multiplicities Model independent Particle multiplicity Phase space regions Proton proton collisions Pseudorapidities Transverse momenta Charged particles Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC |
| topic_facet |
High energy physics Phase space methods Tellurium compounds Centre-of-mass energies Charged particle multiplicities Model independent Particle multiplicity Phase space regions Proton proton collisions Pseudorapidities Transverse momenta Charged particles |
| description |
Measurements are presented from proton-proton collisions at centre-of-mass energies of s = 0.9, 2.36 and 7 TeV recorded with the ATLAS detector at the LHC. Events were collected using a single-arm minimumbias 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 pT < 100 MeV, is measured to be 3.483±0.009 (stat)±0.106 (syst) at s = 0.9 TeV and 5.630±0.003 (stat)±0.169 (syst) at s = 7 TeV. © 2011 CERN for the benefit of the ATLAS Collaboration, published under licence by IOP Publishing Ltd for the Institute of Physics and Deutsche Physikalische Gesellschaft. |
| title |
Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC |
| title_short |
Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC |
| title_full |
Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC |
| title_fullStr |
Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC |
| title_full_unstemmed |
Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC |
| title_sort |
charged-particle multiplicities in ppinteractions measured with the atlas detector at the lhc |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13672630_v13_n_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_13672630_v13_n_p_Multitudinario |
| _version_ |
1768542140947759104 |