Two-particle Bose–Einstein correlations in pp collisions at √s = 0.9 and 7 TeV measured with the ATLAS detector

ATLAS Collaboration

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53 Scopus citations

Abstract

The paper presents studies of Bose–EinsteinCorrelations (BEC) for pairs of like-sign charged particles measured in the kinematic range pT > 100 MeV and |η| < 2.5 in proton–proton collisions at centre-of-mass energies of 0.9 and 7 TeV with the ATLAS detector at the CERN Large Hadron Collider. The integrated luminosities are approximately 7 μb−1, 190 μb−1 and 12.4 nb−1 for 0.9 TeV, 7 TeV minimum-bias and 7 TeV high-multiplicity data samples, respectively. The multiplicity dependence of the BEC parameters characterizing the correlation strength and the correlation source size are investigated for charged-particle multiplicities of up to 240. A saturation effect in the multiplicity dependence of the correlation source size parameter is observed using the high-multiplicity 7 TeV data sample. The dependence of the BEC parameters on the average transverse momentum of the particle pair is also investigated.

Original languageEnglish
Article number466
JournalEuropean Physical Journal C
Volume75
Issue number10
DOIs
StatePublished - 2015

Funding

FundersFunder number
Not addedST/N000420/1
CEA-DSM
Cantons of Bern and Geneva
Czech Republic
DNSRC
GridKA
INFNCNAF
IRFU
MES of Russia
MIZŠ
MNE
NDGFCC-IN2P3
NSRF
RGC
VSC CR
Wallenberg Foundation
National Science Foundation1119200
U.S. Department of Energy
Alexander von Humboldt-Stiftung
Alabama Space Grant Consortium
Brookhaven National Laboratory
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
Karlsruhe Institute of Technology
Türkiye Atom Enerjisi Kurumu
Biomedical Research Foundation
Seventh Framework Programme246806
Multiple Sclerosis Scientific Research Foundation
CERN
Glycemic Index Foundation
Réseau de cancérologie Rossy
Azərbaycan Milli Elmlər Akademiyası
Natural Sciences and Engineering Research Council of Canada
National Research Council Canada
Canada Foundation for Innovation
Science and Technology Facilities CouncilPP/E000347/1, ST/L001195/1, ST/J00474X/1, ST/M001407/1, ST/L006480/1, ST/M002306/1, ST/M006980/1, ST/K001361/1, ST/L003414/1, GRIDPP, ST/K001310/1, ST/M001733/1, ST/L00352X/1, PP/D002915/1, ST/H00100X/1, ST/L001144/1, ST/L003112/1, ST/J005525/1, ST/K00073X/1, ST/H00100X/2, ST/K000705/1, ST/L003511/1, ST/M001504/1, ST/K001248/1, ST/M000761/1, ST/I000178/1, ST/L000326/1, ST/G50228X/1, ST/N000307/1, PP/E000355/1, ST/H001093/2, ST/M001431/1, ST/K001418/1, ST/K00140X/1, ST/M001474/1, ST/H001093/1, ST/I00372X/1, PP/E002846/1, ST/J005487/1, ST/I006056/1, ST/K001302/1, PP/E000444/1, ST/K00137X/1, ST/N000463/1, ST/K001329/1, ST/N000277/1, ST/L001179/1
Leverhulme Trust
Royal Society
European CommissionIN2P3-CNRS
European Research Council
Australian Research Council
National Stroke Foundation
Neurosurgical Research Foundation
Department of Science and Technology, Ministry of Science and Technology, India
Helmholtz-Gemeinschaft
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 Forschung156083, 149246
Stichting voor Fundamenteel Onderzoek der Materie
Danmarks Grundforskningsfond
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Natural Science Foundation of China
Ministerstvo Školství, Mládeže a Tělovýchovy
National Science Council
Fundação para a Ciência e a Tecnologia
Bundesministerium für Bildung und Forschung
Chinese Academy of Sciences
Austrian Science Fund
Comisión Nacional de Investigación Científica y Tecnológica
Agencia Nacional de Promoción Científica y Tecnológica
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministerio de Economía y Competitividad
Bundesministerium für Wissenschaft, Forschung und Wirtschaft
General Secretariat for Research and Technology
Lundbeckfonden
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Joint Institute for Nuclear Research
Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science
Israel Science Foundation
Instituto Nazionale di Fisica Nucleare
Max-Planck-Gesellschaft
Narodowe Centrum Nauki
Javna Agencija za Raziskovalno Dejavnost RS
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
Ministerstwo Edukacji i Nauki
Ministry of Science and Technology, Taiwan
Georgian National Science Foundation
Israeli Centers for Research Excellence
Centre National pour la Recherche Scientifique et Technique
State Atomic Energy Corporation ROSATOM
Council on grants of the President of the Russian Federation
Sociedad Española de Reumatología
Institutul de Fizică Atomică

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