Charged-particle multiplicities in pp interactions at root s=900 GeV measured with the ATLAS detector at the LHC ATLAS Collaboration
- NázevTitle
- Charged-particle multiplicities in pp interactions at root s=900 GeV measured with the ATLAS detector at the LHC ATLAS CollaborationCharged-particle multiplicities in pp interactions at root s=900 GeV measured with the ATLAS detector at the LHC ATLAS Collaboration
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- G. Aad, E. Abat, B. Abbott, J. Abdallah, A. A. Abdelalim, T. Holý, J. Jakůbek, V. Král, F. Krejčí, S. Pospíšil, T. Slavíček, K. Smolek, M. Solar, J. Šolc, V. Sopko, I. Štekl, D. Tureček, K. Augsten, T. Horažďovský, Z. Hubáček, Z. Kohout, V. Šimák, J. Sodomka, B. Sopko, V. Vacek, M. Vlasák, P. Vokáč
- Klíčová slovaKeywords
- charged-particle, multiplicity, 900 GeV, atlas, lhc, minimum bias
- ExperimentCollaboration
- ATLAS
- DOIDOI
- 10.1016/j.physletb.2010.03.064
- Časopis / citaceJournal / citation
- Physics Letters B 688(1), 21-42 (2010) · ISSN 0370-2693
- RokYear
- 2010
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Mezinárodní experiment ATLAS-CERNInternational Experiment ATLAS-CERN; Fundamentální experimenty ve fyzice mikrosvětaFundamental Experiments in Physics of Microworld
- CitovánoCited by
- 325 (INSPIRE-HEP)
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
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.
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.