Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC
- NázevTitle
- Charged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHCCharged-particle multiplicities in ppinteractions measured with the ATLAS detector at the LHC
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim, A. Abdesselam, K. Augsten, T. Holý, T. Horažďovský, Z. Hubáček, J. Jakůbek, Z. Kohout, F. Krejčí, V. Král, S. Pospíšil, V. Šimák, T. Slavíček, K. Smolek, J. Sodomka, M. Solar, J. Šolc, V. Sopko, B. Sopko, I. Štekl, D. Tureček, V. Vacek, M. Vlasák, P. Vokáč
- Klíčová slovaKeywords
- transverse-momentum spectra, atlas, multiplicity
- ExperimentCollaboration
- ATLAS
- DOIDOI
- 10.1088/1367-2630/13/5/053033
- Časopis / citaceJournal / citation
- New Journal of Physics 13(5), 053033 (2011) · ISSN 1367-2630
- RokYear
- 2011
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Centrum částicové fyzikyCenter for Particle Physics; Mezinárodní experiment ATLAS-CERNInternational Experiment ATLAS-CERN; Fundamentální experimenty ve fyzice mikrosvětaFundamental Experiments in Physics of Microworld; Matematické, počítačové a experimentální metody ve fyziceMathematical, Computer and Experimental Methods in Physics; Mezinárodní experiment ATLAS-CERNInternational Experiment ATLAS-CERN
- CitovánoCited by
- 746 (INSPIRE-HEP)
- Plný text (open access)Full text (open access)
- https://iopscience.iop.org/article/10.1088/1367-2630/13/5/053033/pdf
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
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.
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.