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Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Charged-particle multiplicities in pp interactions at √s = 900 GeV measured with the ATLAS detector at the LHC
AU - Fox, Harald
AU - Borissov, Guennadi
AU - Bouhova-Thacker, Evelina
AU - Brodbeck, Timothy
AU - Catmore, James
AU - Cheatham, Sue
AU - Chilingarov, Alexandre
AU - Davidson, Ruth
AU - de Mora, Lee
AU - Henderson, Robert
AU - Hughes, Gareth
AU - Jones, Roger
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 - This article is distributed under the terms of the Creative Commons Attribution License 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.
PY - 2010/4/26
Y1 - 2010/4/26
N2 - The first measurements from proton–proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy of 900 GeV. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity, and the relationship between mean transverse momentum and charged- particle multiplicity are measured for events with at least one charged particle in the kinematic range |η| < 2.5 and pT > 500 MeV. The measurements are compared to Monte Carlo models of proton–proton collisions and to results from other experiments at the same centre-of-mass energy. The charged-particle multiplicity per event and unit of pseudorapidity at η = 0 is measured to be 1.333 ± 0.003(stat.) ± 0.040(syst.), which is 5–15% higher than the Monte Carlo models predict.
AB - The first measurements from proton–proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy of 900 GeV. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity, and the relationship between mean transverse momentum and charged- particle multiplicity are measured for events with at least one charged particle in the kinematic range |η| < 2.5 and pT > 500 MeV. The measurements are compared to Monte Carlo models of proton–proton collisions and to results from other experiments at the same centre-of-mass energy. The charged-particle multiplicity per event and unit of pseudorapidity at η = 0 is measured to be 1.333 ± 0.003(stat.) ± 0.040(syst.), which is 5–15% higher than the Monte Carlo models predict.
U2 - 10.1016/j.physletb.2010.03.064
DO - 10.1016/j.physletb.2010.03.064
M3 - Journal article
VL - 688
SP - 21
EP - 42
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
IS - 1
ER -