Measurement of flow harmonics correlations with mean transverse momentum in lead-lead and proton-lead collisions at root s(NN)=5.02 TeV with the ATLAS detector
Delitzsch, C M
Johns, K A
Rutherfoord, J P
Varnes, E W
AffiliationUniv Arizona, Dept Phys
MetadataShow full item record
CitationATLAS Collaboration, Aad, G., Abbott, B. et al. Eur. Phys. J. C (2019) 79: 985. https://doi.org/10.1140/epjc/s10052-019-7489-6
JournalEUROPEAN PHYSICAL JOURNAL C
RightsCopyright © CERN for the benefit of the ATLAS collaboration 2019. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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AbstractTo assess the properties of the quark gluon plasma formed in ultrarelativistic ion collisions, the ATLAS experiment at the LHC measures a correlation between the mean transverse momentum and the flow harmonics. The analysis uses data samples of lead-lead and proton-lead collisions obtained at the centre-of-mass energy per nucleon pair of 5.02 TeV, corresponding to total integrated luminosities of 22 mu b(-1) and 28 mu b(-1), respectively. The measurement is performed using a modified Pearson correlation coefficient with the charged-particle tracks on an event-by-event basis. The modified Pearson correlation coefficients for the 2nd-, 3rd-, and 4th-order flow harmonics are measured in the lead lead collisions as a function of event centrality quantified as the number of charged particles or the number of nucleons participating in the collision. The measurements are performed for several intervals of the charged-particle transverse momentum. The correlation coefficients for all studied harmonics exhibit a strong centrality evolution, which only weakly depends on the charged-particle momentum range. In the proton lead collisions, the modified Pearson correlation coefficient measured for the 2nd-order flow harmonics shows only weak centrality dependence. The lead-lead data is qualitatively described by the predictions based On the hydrodynamical model.
NoteOpen access journal
VersionFinal published version
SponsorsCERN; ANPCyT, ArgentinaANPCyT; YerPhI, Armenia; ARC, AustraliaAustralian Research Council; BMWFW; FWF, AustriaAustrian Science Fund (FWF); ANASAzerbaijan National Academy of Sciences (ANAS); SSTC, Belarus; CNPqNational Council for Scientific and Technological Development (CNPq); FAPESP, BrazilFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); NSERCNatural Sciences and Engineering Research Council of Canada; CFI, CanadaCanada Foundation for Innovation; CONICYTComision Nacional de Investigacion Cientifica y Tecnologica (CONICYT); NSFC, ChinaNational Natural Science Foundation of China; COLCIENCIAS, ColombiaDepartamento Administrativo de Ciencia, Tecnologia e Innovacion Colciencias; MSMT CRMinistry of Education, Youth & Sports - Czech Republic; MPO CR; VSC CR, Czech RepublicCzech Republic Government; DNRF; DNSRC, DenmarkDanish Natural Science Research Council; IN2P3-CNRS, CEA-DRF/IRFU, France; BMBFFederal Ministry of Education & Research (BMBF); MPG, GermanyMax Planck Society; GSRT, GreeceGreek Ministry of Development-GSRT; RGC, Hong Kong SAR, ChinaHong Kong Research Grants Council; ISFIsrael Science Foundation; Benoziyo Center, Israel; INFN, ItalyIstituto Nazionale di Fisica Nucleare; MEXTMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT); JSPS, JapanMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSWMinistry of Science and Higher Education, Poland; NCN, Poland; FCT, PortugalFundacao para a Ciencia e a Tecnologia (FCT); MNE/IFA, Romania; NRC KI, Russian Federation; MESTD, Serbia; MSSR, Slovakia; ARRS andMIZS, Slovenia; MINECO, Spain; SRC; Wallenberg Foundation, Sweden; SNSFSwiss National Science Foundation (SNSF); MOST, TaiwanMinistry of Science and Technology, Taiwan; TAEK, TurkeyMinistry of Energy & Natural Resources - Turkey; STFCScience & Technology Facilities Council (STFC); DOEUnited States Department of Energy (DOE); NSFNational Science Foundation (NSF); BCKDF; CANARIE; COST, ERC; ERDFEuropean Union (EU); Marie Sklodowska-Curie Actions, European UnionEuropean Union (EU); Investissements d' Avenir LabexFrench National Research Agency (ANR); ANR, FranceFrench National Research Agency (ANR); DFGGerman Research Foundation (DFG); AvH Foundation, Germany - EUESFAlexander von Humboldt Foundation; Greek NSRF, Greece; BSF-NSF; GIF, IsraelGerman-Israeli Foundation for Scientific Research and Development; CERCA Programme Generalitat de Catalunya, Spain; Royal SocietyRoyal Society of London; Leverhulme Trust, United KingdomLeverhulme Trust; NDGF(Denmark, Norway, Sweden); KIT/GridKA (Germany); INFN-CNAF (Italy); NL-T1 (Netherlands), PIC (Spain); ASGC (Taiwan); BNL (USA)