Probing Charm Quark Dynamics via Multiparticle Correlations in Pb-Pb Collisions at sNN =5.02 TeV

CMS Collaboration

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Multiparticle azimuthal correlations of prompt D0 mesons are measured in Pb-Pb collisions at a nucleon-nucleon center-of-mass energy of sNN=5.02 TeV. For the first time, a four-particle cumulant method is used to extract the second Fourier coefficient of the azimuthal distribution (v2) of D0 mesons as a function of event centrality and the D0 transverse momentum. The ratios of the four-particle v2 values to previously measured two-particle cumulant results provide direct experimental access to event-by-event fluctuations of charm quark azimuthal anisotropies. These ratios are also found to be comparable to those of inclusive charged particles in the event. However, hints of deviations are seen in the most central and peripheral collisions. To investigate the origin of flow fluctuations in the charm sector, these measurements are compared to a model implementing fluctuations of charm quark energy loss via collisional or radiative processes in the quark-gluon plasma. These models cannot quantitatively describe the data over the full transverse momentum and centrality ranges, although the calculations with collisional energy loss provide a better description of the data.

Original languageEnglish
Article number022001
JournalPhysical Review Letters
Volume129
Issue number2
DOIs
Publication statusPublished - 8 Jul 2022

Bibliographical note

Publisher Copyright:
© 2022 CERN.

Funding

We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid and other centers for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC, the CMS detector, and the supporting computing infrastructure provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES and BNSF (Bulgaria); CERN; CAS, MoST, and NSFC (China); MINCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); MoER, ERC PUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); MCIN/AEI and PCTI (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA).

FundersFunder number
ERC PUT
GSRI
MCIN
MINCIENCIAS
MSES
MoER
PCTI
STAR
National Science Foundation
U.S. Department of Energy
Hispanics in Philanthropy
Maryland Ornithological Society
Direktion für Entwicklung und Zusammenarbeit
Secretaría de Educación Pública
Türkiye Atom Enerjisi Kurumu
Horizon 2020 Framework Programme724704, 675440, 752730, 765710
Louisiana Academy of Sciences
CERN
Thailand Center of Excellence in Physics
Cosmetic Surgery Foundation
Institute for the Promotion of Teaching Science and Technology
Ministerstwo Obrony Narodowej
Science and Technology Facilities Council
Department of Science and Technology, Ministry of Science and Technology, India
Ministry of Education - Singapore
Department of Atomic Energy, Government of India
Science Foundation Ireland
Helmholtz-Gemeinschaft
Deutsche Forschungsgemeinschaft
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Natural Science Foundation of China
National Science Council
Fundação para a Ciência e a Tecnologia
Russian Foundation for Basic Research
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Academy of Finland
Bundesministerium für Bildung und Forschung
Chinese Academy of Sciences
Austrian Science Fund
Fonds De La Recherche Scientifique - FNRS
Russian Academy of Sciences
Fonds Wetenschappelijk Onderzoek
Consejo Nacional de Ciencia y Tecnología
Ministerio de Educación, Cultura y Deporte
Bulgarian National Science Fund
Ministry of Business, Innovation and Employment
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Science, ICT and Future Planning
National Research Foundation of Korea
Joint Institute for Nuclear Research
Instituto Nazionale di Fisica Nucleare
National Science and Technology Development AgencyThailand
Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul
Secretaría de Educación Superior, Ciencia, Tecnología e Innovación
Universiti Malaya
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
Ministerstwo Edukacji i Nauki
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Ministry of Science and Technology, Taiwan
National Academy of Sciences of Ukraine
Centre National de la Recherche Scientifique
Universidad Autónoma de San Luis Potosí
Ministry of Education and Science
Institute for Research in Fundamental Sciences
Benemérita Universidad Autónoma de Puebla
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
European Regional Development Fund
State Atomic Energy Corporation ROSATOM
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional
Pakistan Atomic Energy Commission
Ministry of Science,Technology and Research
Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie
Agencia Estatal de Investigación
Institut National de Physique Nucléaire et de Physique des Particules
Nemzeti Kutatási, Fejlesztési és Innovaciós Alap
National Research Center "Kurchatov Institute"
Laboratorio Nacional de Supercómputo del Sureste de Mexico

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