4.8 Article

Measurement of Υ(1S) Elliptic Flow at Forward Rapidity in Pb-Pb Collisions at √sNN=5.02 TeV

期刊

PHYSICAL REVIEW LETTERS
卷 123, 期 19, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.192301

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资金

  1. Worldwide LHC Computing Grid (WLCG)
  2. A. I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation (ANSL), Armenia
  3. State Committee of Science, Armenia
  4. World Federation of Scientists (WFS), Armenia
  5. Austrian Academy of Sciences, Austria
  6. Austrian Science Fund (FWF), Austria [M 2467-N36]
  7. Nationalstiftung fur Forschung, Technologie und Entwicklung, Austria
  8. Ministry of Communications and High Technologies, National Nuclear Research Center, Azerbaijan
  9. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil
  10. Universidade Federal do Rio Grande do Sul (UFRGS), Brazil
  11. Financiadora de Estudos e Projetos (Finep), Brazil
  12. Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazil
  13. Ministry of Science & Technology of China (MSTC), China
  14. National Natural Science Foundation of China (NSFC), China
  15. Ministry of Education of China (MOEC), China
  16. Croatian Science Foundation, Croatia
  17. Ministry of Science and Education, Croatia
  18. Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear (CEADEN), Cubaenergia, Cuba
  19. Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic
  20. Danish Council for Independent Research | Natural Sciences, Denmark
  21. Carlsberg Foundation, Denmark
  22. Danish National Research Foundation (DNRF), Denmark
  23. Helsinki Institute of Physics (HIP), Finland
  24. Commissariat a l'Energie Atomique (CEA), France
  25. Institut National de Physique Nucleaire et de Physique des Particules (IN2P3), France
  26. Centre National de la Recherche Scientifique (CNRS), France
  27. Region des Pays de la Loire, France
  28. Bundesministerium fur Bildung und Forschung (BMBF), Germany
  29. GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Germany
  30. General Secretariat for Research and Technology, Ministry of Education, Research and Religions, Greece
  31. National Research, Development and Innovation Office, Hungary
  32. Department of Atomic Energy Government of India (DAE), India
  33. Department of Science and Technology, Government of India (DST), India
  34. University Grants Commission, Government of India (UGC), India
  35. Council of Scientific and Industrial Research (CSIR), India
  36. Indonesian Institute of Science, Indonesia
  37. Centro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Italy
  38. Istituto Nazionale di Fisica Nucleare (INFN), Italy
  39. Institute for Innovative Science and Technology, Japan
  40. Japan Society for the Promotion of Science (JSPS) KAKENHI, Japan
  41. Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
  42. Consejo Nacional de Ciencia (CONACYT) y Tecnologia, through Fondo de Cooperacion Internacional en Ciencia y Tecnologia (FONCICYT), Mexico
  43. Direccion General de Asuntos del Personal Academico (DGAPA), Mexico
  44. Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands
  45. Research Council of Norway, Norway
  46. Commission on Science and Technology for Sustainable Development in the South (COMSATS), Pakistan
  47. Pontificia Universidad Catolica del Peru, Peru
  48. Ministry of Science and Higher Education, Poland
  49. National Science Centre, Poland
  50. Korea Institute of Science and Technology Information, Republic of Korea
  51. National Research Foundation of Korea (NRF), Republic of Korea
  52. Ministry of Education and Scientific Research, Institute of Atomic Physics, Romania
  53. Ministry of Research and Innovation, Romania
  54. Joint Institute for Nuclear Research (JINR), Russia
  55. Ministry of Education and Science of the Russian Federation, Russia
  56. National Research Centre Kurchatov Institute, Russia
  57. Russian Science Foundation, Russia
  58. Russian Foundation for Basic Research, Russia
  59. Ministry of Education, Science, Research and Sport of the Slovak Republic, Slovakia
  60. National Research Foundation of South Africa, South Africa
  61. Swedish Research Council (VR), Sweden
  62. Knut & Alice Wallenberg Foundation (KAW), Sweden
  63. European Organization for Nuclear Research, Switzerland
  64. National Science and Technology Development Agency (NSDTA), Thailand
  65. Suranaree University of Technology (SUT), Thailand
  66. Office of the Higher Education Commission under NRU project of Thailand, Thailand
  67. Turkish Atomic Energy Agency (TAEK), Turkey
  68. National Academy of Sciences of Ukraine, Ukraine
  69. Science and Technology Facilities Council (STFC), United Kingdom
  70. National Science Foundation of the United States of America (NSF), United States of America
  71. United States Department of Energy, Office of Nuclear Physics (DOE NP), United States of America
  72. Institute of Atomic Physics, Romania
  73. Nagasaki Institute of Applied Science (IIST), Japan
  74. STFC [2017 STFC Nuclear Physics CG, ST/M001601/1, ALICE, ST/M00158X/1, ST/P005047/1, ST/M00340X/1, ST/P005438/1, ST/M001598/1, ST/P004199/1, ST/L005670/1, ST/N00261X/1, 1963192, 1796881, 1843572, ST/P004598/1] Funding Source: UKRI
  75. Science and Technology Facilities Council [1843572, 2017 STFC Nuclear Physics CG] Funding Source: researchfish

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The first measurement of the Upsilon(1S) elliptic flow coefficient (v(2)) is performed at forward rapidity (2.5 < y < 4) in Pb-Pb collisions at root s(NN) = 5.02 TeV with the ALICE detector at the LHC. The results are obtained with the scalar product method and are reported as a function of transverse momentum (pT) up to 15 GeV/c in the 5%-60% centrality interval. The measured Upsilon(1S)v(2) is consistent with 0 and with the small positive values predicted by transport models within uncertainties. The v(2) coefficient in 2 < p(T) < 15 GeV=c is lower than that of inclusive J/psi mesons in the same p(T) interval by 2.6 standard deviations. These results, combined with earlier suppression measurements, are in agreement with a scenario in which the Upsilon(1S) production in Pb-Pb collisions at LHC energies is dominated by dissociation limited to the early stage of the collision, whereas in the J/psi case there is substantial experimental evidence of an additional regeneration component.

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