Femtoscopy with identified charged pions in proton-lead collisions at √sNN =5.02 TeV with ATLAS

ATLAS Collaboration

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Bose-Einstein correlations between identified charged pions are measured for p+Pb collisions at sNN=5.02TeV using data recorded by the ATLAS detector at the CERN Large Hadron Collider corresponding to a total integrated luminosity of 28nb-1. Pions are identified using ionization energy loss measured in the pixel detector. Two-particle correlation functions and the extracted source radii are presented as a function of collision centrality as well as the average transverse momentum (kT) and rapidity (yππ) of the pair. Pairs are selected with a rapidity -2<yππ<1 and with an average transverse momentum 0.1<kT<0.8GeV. The effect of jet fragmentation on the two-particle correlation function is studied, and a method using opposite-charge pair data to constrain its contributions to the measured correlations is described. The measured source sizes are substantially larger in more central collisions and are observed to decrease with increasing pair kT. A correlation of the radii with the local charged-particle density is demonstrated. The scaling of the extracted radii with the mean number of participating nucleons is also used to compare a selection of initial-geometry models. The cross term Rol is measured as a function of rapidity, and a nonzero value is observed with 5.1σ combined significance for -1<yππ<1 in the most central events.

Original languageEnglish
Article number064908
JournalPhysical Review C
Volume96
Issue number6
DOIs
StatePublished - 28 Dec 2017

Funding

FundersFunder number
AvH Foundation
Benoziyo Center, Israel
CEA-DSM/IRFU
Cantons of Bern and Geneva
DNSRCIN2P3-CNRS
DST/NRF
EU-ESF
MES of Russia
MESTD
MIZŠ
MNE/IFA
MSMT
MSSR
Minerva, Israel
RGC
Royal Society and Lev-erhulme Trust
Région Auvergne
VSC CR, Czech Republic
National Science Foundation1624739
National Science Foundation
U.S. Department of Energy
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
Biomedical Research Foundation
Arizona-Nevada Academy of Science
CERN
National Research Council
College of Arts and Sciences, University of Nebraska-Lincoln
Glycemic Index Foundation
Natural Sciences and Engineering Research Council of Canada
Science and Technology Facilities CouncilST/K001574/1, PP/E000452/1, ST/H001158/1, ST/N000234/1, ST/N000331/1, ST/H001158/2, GRIDPP, ST/N000277/1, ST/I006145/1
Science and Technology Facilities Council
British Skin Foundation
Australian Research Council
Singapore Eye Research Institute
Helmholtz-Gemeinschaft
Deutsche Forschungsgemeinschaft
Agence Nationale de la Recherche
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Danmarks Grundforskningsfond
Canada Foundation for Innovation
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Natural Science Foundation of China
Fundação para a Ciência e a Tecnologia
Bundesministerium für Bildung und Forschung
Austrian Science Fund
Generalitat de Catalunya
Comisión Nacional de Investigación Científica y Tecnológica
Agencia Nacional de Promoción Científica y Tecnológica
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministerio de Economía y Competitividad
Generalitat Valenciana
Bundesministerium für Wissenschaft, Forschung und Wirtschaft
General Secretariat for Research and Technology
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Science and Technology
Joint Institute for Nuclear Research
Israel Science Foundation
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Javna Agencija za Raziskovalno Dejavnost RS
Ministerstwo Nauki i Szkolnictwa Wyższego
Ministry of Science and Technology, Taiwan
Shota Rustaveli National Science Foundation
Centre National pour la Recherche Scientifique et Technique
Marianne and Marcus Wallenberg Foundation
Fondation Partager le Savoir
National Research Center "Kurchatov Institute"
Ministry of Health of the Russian Federation

    Fingerprint

    Dive into the research topics of 'Femtoscopy with identified charged pions in proton-lead collisions at √sNN =5.02 TeV with ATLAS'. Together they form a unique fingerprint.

    Cite this