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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. / The ATLAS collaboration.
In: New Journal of Physics, Vol. 13, No. 5, 053033, 05.2011.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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The ATLAS collaboration. Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC. New Journal of Physics. 2011 May;13(5):053033. doi: 10.1088/1367-2630/13/5/053033

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The ATLAS collaboration. / Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC. In: New Journal of Physics. 2011 ; Vol. 13, No. 5.

Bibtex

@article{18092fd22f404fe8af20534528b84bb0,
title = "Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC",
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.",
author = "Adam Barton and Guennadi Borissov and Eva Bouhova-Thacker and Timothy Brodbeck and James Catmore and Sue Cheatham and Alexandre Chilingarov and Ruth Davidson and {de Mora}, Lee and Harald Fox and Robert Henderson and Gareth Hughes and Jones, {Roger William Lewis} and Vakhtang Kartvelishvili and Robin Long and Peter Love and Peter Ratoff and Terence Sloan and Maria Smizanska and James Walder and {The ATLAS collaboration}",
note = "{\textcopyright} 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. Content may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the published article{\textquoteright}s title, journal citation and DOI.",
year = "2011",
month = may,
doi = "10.1088/1367-2630/13/5/053033",
language = "English",
volume = "13",
journal = "New Journal of Physics",
issn = "1367-2630",
publisher = "IOP Publishing Ltd",
number = "5",

}

RIS

TY - JOUR

T1 - Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC

AU - Barton, Adam

AU - Borissov, Guennadi

AU - Bouhova-Thacker, Eva

AU - Brodbeck, Timothy

AU - Catmore, James

AU - Cheatham, Sue

AU - Chilingarov, Alexandre

AU - Davidson, Ruth

AU - de Mora, Lee

AU - Fox, Harald

AU - Henderson, Robert

AU - Hughes, Gareth

AU - Jones, Roger William Lewis

AU - Kartvelishvili, Vakhtang

AU - Long, Robin

AU - Love, Peter

AU - Ratoff, Peter

AU - Sloan, Terence

AU - Smizanska, Maria

AU - Walder, James

AU - The ATLAS collaboration

N1 - © 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. Content may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation and DOI.

PY - 2011/5

Y1 - 2011/5

N2 - 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.

AB - 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.

U2 - 10.1088/1367-2630/13/5/053033

DO - 10.1088/1367-2630/13/5/053033

M3 - Journal article

VL - 13

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

IS - 5

M1 - 053033

ER -