Long-Range Transverse-Momentum Correlations and Radial Flow in Pb-Pb Collisions at the LHC
- INFN
- European Organization for Nuclear Research (CERN)
- Dipartimento di Fisica dell’Università and Sezione INFN
- Dipartimento DISAT del Politecnico and Sezione INFN
- Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN
- Homi Bhabha National Institute
- Aligarh Muslim University
- Korea Institute of Science and Technology Information
- P.J. Šafárik University
- National Research and Innovation Agency—BRIN
- CERN
- Johann Wolfgang Goethe-Universität Frankfurt
- Research Division and ExtreMe Matter Institute EMMI
- Central China Normal University
- Universidad Nacional Autónoma de México
- University of Houston
- Sungkyunkwan University
- University of Bergen
- Technische Universität München
- Horia Hulubei National Institute of Physics and Nuclear Engineering
- University of Derby
- Universität Münster
- Ruprecht-Karls-Universität Heidelberg
- Lawrence Berkeley National Laboratory
- Université Grenoble-Alpes
- Universidade de São Paulo (USP)
- University of Oslo
- Yale University
- University of Tokyo
- Gangneung-Wonju National University
- University of Science and Technology of China
- Indian Institute of Technology
- University of Jammu
- Université Paris-Saclay
- AGH University of Krakow
- University of Kansas
- Dipartimento Interateneo di Fisica “M. Merlin” and Sezione INFN
- National and Kapodistrian University of Athens
- Gauhati University
- HUN-REN Wigner Research Centre for Physics
- Nantes Université
- Université Clermont Auvergne
- Lund University Department of Physics
- Pontificia Universidad Católica del Perú
- Niels Bohr Institute
- Université de Strasbourg
- Universidad Autónoma de Sinaloa
- Universidad Autónoma de Puebla
- Panjab University
- Czech Technical University in Prague
- Nuclear Physics Institute of the Czech Academy of Sciences
- Bose Institute
- Oak Ridge National Laboratory
- Pusan National University
- INFN; Università di Brescia
- Institute of Space Science (ISS)
- Dipartimento Interateneo di Fisica “M. Merlin” and Sezione INFN; Politecnico di Bari and Sezione INFN
- Sofia University
- STFC Daresbury Laboratory
- Stefan Meyer Institut für Subatomare Physik (SMI)
- iThemba LABS; University of the Witwatersrand
- Polish Academy of Sciences
- Università and Gruppo Collegato INFN
- Universitatea Nationala de Stiinta si Tehnologie Politehnica Bucuresti
- Warsaw University of Technology
- University of Liverpool
- Fudan University
- Université de Lyon
- Inha University
- Saha Institute of Nuclear Physics
- Nikhef
- University of Tsukuba
- University of Birmingham
- INFN; Università del Piemonte Orientale
- Universidade Federal do ABC
- Università di Pavia
- Università di Brescia
- University of California
- Università degli Studi di Foggia
- Comenius University Bratislava
- Hiroshima University
- Laboratori Nazionali di Frascati
- The University of Texas at Austin
- iThemba LABS
- Saga University
- National Institute of Science Education and Research
- Chicago State University
- Universidade Federal do Rio Grande do Sul (UFRGS)
- INFN; Research Division and ExtreMe Matter Institute EMMI
- University of Tennessee
- Wayne State University
- University of Split
- Institute for Gravitational and Subatomic Physics (GRASP)
- A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation; CERN
- China Institute of Atomic Energy
- Nagasaki Institute of Applied Science
- Yonsei University
- University of Jyväskylä
- Rheinische Friedrich-Wilhelms-Universität Bonn
- Environmental and Social Sciences
- Centro de Investigación y de Estudios Avanzados (CINVESTAV)
- Johann-Wolfgang-Goethe Universität Frankfurt Institut für Informatik
- Ohio State University
- University of California; Lawrence Berkeley National Laboratory
- Technical University of Košice
- Universidade Estadual de Campinas (UNICAMP)
- European Organization for Nuclear Research (CERN); Research Division and ExtreMe Matter Institute EMMI
- Suranaree University of Technology
- Slovak Academy of Sciences
- Yildiz Technical University
- Jeonbuk National University
- European Organization for Nuclear Research (CERN); Jeonbuk National University
- Sejong University
- California Polytechnic State University
- University of Zagreb
- Slovak Academy of Sciences; University of Birmingham
- National Centre for Nuclear Research
- University of South-Eastern Norway
- Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN)
- Research Division and ExtreMe Matter Institute EMMI; University of Science and Technology of China
- Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN; INFN
- Università di Messina; INFN
- European Organization for Nuclear Research (CERN); Universidade de São Paulo (USP)
- INFN; Università degli Studi di Foggia
- Dipartimento di Fisica dell’Università and Sezione INFN; Université Clermont Auvergne
- Helsinki Institute of Physics (HIP)
- European Organization for Nuclear Research (CERN); Ruprecht-Karls-Universität Heidelberg
- CERN; CERN
- University of the Witwatersrand
- Chungbuk National University
- China University of Geosciences
- European Organization for Nuclear Research (CERN); INFN
- Dipartimento di Fisica dell’Università and Sezione INFN; European Organization for Nuclear Research (CERN)
- Creighton University
- Oak Ridge National Laboratory; University of Tennessee
- National Nuclear Research Center
- Institute of Physics
- European Organization for Nuclear Research (CERN); Technische Universität München
- European Organization for Nuclear Research (CERN); Johann Wolfgang Goethe-Universität Frankfurt
- Eberhard-Karls-Universität Tübingen
- Nara Women’s University (NWU)
- European Organization for Nuclear Research (CERN); Universitatea Nationala de Stiinta si Tehnologie Politehnica Bucuresti
- European Organization for Nuclear Research (CERN); Universität Münster
- Politecnico di Bari and Sezione INFN
- Università di Messina; European Organization for Nuclear Research (CERN); INFN
- National Academy of Sciences of Ukraine
- Institute of Physics of the Czech Academy of Sciences
- Central China Normal University; Université Clermont Auvergne
- Central China Normal University; Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN
- Central China Normal University; INFN
This Letter presents measurements of long-range transverse-momentum correlations using a new observable, 𝑣0(𝑝T), serving as a probe of event-by-event radial-flow fluctuations, the underlying radial expansion, and the medium’s properties in heavy-ion collisions. Results are reported for inclusive charged particles, pions, kaons, and protons across various centrality intervals in Pb-Pb collisions at $$\sqrt{𝑠_{\textrm{NN}}}$$ = 5.02 TeV, recorded by the ALICE detector. A pseudorapidity-gap technique, similar to that used in anisotropic-flow studies, is employed to suppress short-range correlations. At low 𝑝T, a characteristic mass ordering consistent with hydrodynamic collective flow is observed. At higher 𝑝T (>3 GeV/𝑐), protons exhibit larger 𝑣0(𝑝T) than pions and kaons, in agreement with expectations from quark-recombination models. Comparisons to viscous hydrodynamic calculations with varying bulk viscosity and equation of state demonstrate the sensitivity of the 𝑣0(𝑝T) observable to these key medium properties. The findings establish 𝑣0(𝑝T) as a valuable addition to the set of observables used in Bayesian analyses for extracting the transport properties and constraining the equation of state of strongly interacting matter, while also helping to systematically explore its sensitivity and impact within such global studies.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- Grant/Contract Number:
- AC02-05CH11231; AC05-00OR22725
- OSTI ID:
- 3029520
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 136; ISSN 1079-7114; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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