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Article
Report number arXiv:1012.0791 ; CERN-PH-EP-2010-063 ; CERN-PH-EP-2010-063
Title Measurement of underlying event characteristics using charged particles in pppp collisions at ss = 900 GeV and 7 TeV with the ATLAS Detector
Related titleMeasurement of underlying event characteristics using charged particles in pp collisions at s=900GeVs=900GeV and 7 TeV with the ATLAS detector
Author(s) ATLAS Collaboration  Εμφάνιση και των 3070 συγγραφέων
Affiliation (CERN)
Publication 2011
Imprint 26 Nov 2010
Number of pages 37
Note Submitted to PRD (3 Dec 2010)
36 pages plus author list (65 pages total), 12 figures, 2 tables
In: Phys. Rev. D 83 (2011) 112001
DOI 10.1103/PhysRevD.83.112001
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Abstract Measurements of charged particle distributions, sensitive to the underlying event, have been performed with the ATLAS detector at the LHC. The measurements are based on data collected using a minimum-bias trigger to select proton{proton collisions at center-of-mass energies of 900 GeV and 7 TeV. The "underlying event" is defined as those aspects of a hadronic interaction attributed not to the hard scattering process, but rather to the accompanying interactions of the rest of the proton. Three regions are defined in azimuthal angle with respect to the the highest-pTpT charged particle in the event, such that the region transverse to the dominant momentum-flow is most sensitive to the underlying event. In each of these regions, distributions of the charged particle multiplicity, pTpT density, and average pTpT are measured. The data show a higher underlying event activity than that predicted by Monte Carlo models tuned to pre-LHC data.
Copyright/License publication: © 2011-2025 CERN (License: CC-BY-3.0)
preprint: © 2010-2025 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: giuseppe.iacobucci@cern.ch


 Δημιουργία εγγραφής 2010-11-26, τελευταία τροποποίηση 2024-03-14


APS Open Access article:
Κατέβασμα πλήρες κειμένουPDF
Πλήρες κείμενο:
arXiv:1012.0791 - Κατέβασμα πλήρες κειμένουPDF
UE-tracks.v4 - Κατέβασμα πλήρες κειμένουPDF
εξωτερικοί σύνδεσμοι:
Κατέβασμα πλήρες κειμένουall figures including auxiliary figures
Κατέβασμα πλήρες κειμένουRivet analyses reference
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