Measurements of underlying-event properties using neutral and charged particles in pp collisions at √s = 900 GeV and √s = 7 TeV with the ATLAS detector at the LHC

The ATLAS collaboration

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39 Scopus citations

Abstract

We present first measurements of charged and neutral particle-flow correlations in pp collisions using the ATLAS calorimeters.Data were collected in 2009 and 2010 at centre-of-mass energies of 900 GeV and 7 TeV.Events were selected using a minimum-bias trigger which required a charged particle in scintillation counters on either side of the interaction point.Particle flows, sensitive to the underlying event, are measured using clusters of energy in the ATLAS calorimeters, taking advantage of their fine granularity.No Monte Carlo generator used in this analysis can accurately describe the measurements.The results are independent of those based on charged particles measured by the ATLAS tracking systems and can be used to constrain the parameters of Monte Carlo generators.

Original languageEnglish
Article number1636
JournalEuropean Physical Journal C
Volume71
Issue number5
DOIs
StatePublished - 2011

Funding

FundersFunder number
AvH Foundation
Benoziyo Center, Israel
CEA-DSM/IRFU
Cantons of Bern and Geneva
DIP
DNSRC
DST/NRF
GNAS
INFN-CNAF
KIT/GridKA
MECTS
MERYS
MES of Russia
MSMT
MSSR
MSTD
MVZT
NDGFCC-IN2P3
VSC CR
National Science Foundation0855405
National Science Foundation
U.S. Department of Energy
Healthcare Georgia Foundation
Arkansas Space Grant Consortium
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
School of Energy Resources, University of Wyoming
Türkiye Atom Enerjisi Kurumu
Arizona-Nevada Academy of Science
CERN
National Research Council
College of Arts and Sciences, University of Nebraska-Lincoln
Natural Sciences and Engineering Research Council of Canada
Science and Technology Facilities CouncilST/F007337/1, ST/I005803/1, PP/E000347/1, ST/H001069/1, ST/H001026/1, ST/I006080/1, PP/E003087/1, ST/H001077/1, ST/I000186/1, ST/H001093/2, GRIDPP, ST/H001093/1, ST/G502320/1, PP/E002838/1, ST/H001166/1, PP/E003699/2, ST/H001026/2, PP/E003699/1, ST/J002798/1, ST/K00073X/1, ST/H000887/2
Science and Technology Facilities Council
Leverhulme Trust
Royal Society
European CommissionIN2P3-CNRS
European Commission
Australian Research Council
Minerva Foundation
Deutsche Forschungsgemeinschaft
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Danmarks Grundforskningsfond
German-Israeli Foundation for Scientific Research and Development
Canada Foundation for Innovation
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Science Council
Fundação para a Ciência e a Tecnologia
Bundesministerium für Bildung und Forschung
Comisión Nacional de Investigación Científica y Tecnológica
Ministry of Science and Technology of the People's Republic of China
Agencia Nacional de Promoción Científica y Tecnológica
Ministerstvo Zdravotnictví Ceské Republiky
General Secretariat for Research and Technology
Lundbeckfonden
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Joint Institute for Nuclear Research
Israel Science Foundation
Instituto Nazionale di Fisica Nucleare
Max-Planck-Gesellschaft
Javna Agencija za Raziskovalno Dejavnost RS
Ministerstwo Nauki i Szkolnictwa Wyższego
Ministerio de Ciencia e Innovación
Centre National pour la Recherche Scientifique et Technique
Bundesministerium für Wissenschaft und Forschung
State Atomic Energy Corporation ROSATOM
Marianne and Marcus Wallenberg Foundation
Artemis Charitable Trust
Ministry of Health of the Russian Federation

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