4.4 Article

Suppression of high transverse momentum D mesons in central Pb-Pb collisions at √sNN=2.76 TeV

Journal

JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 9, Pages -

Publisher

SPRINGER
DOI: 10.1007/JHEP09(2012)112

Keywords

Heavy Ions

Funding

  1. Calouste Gulbenkian Foundation from Lisbon and Swiss Fonds Kidagan, Armenia
  2. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
  3. Financiadora de Estudos e Projetos (FINEP)
  4. Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)
  5. National Natural Science Foundation of China (NSFC)
  6. Chinese Ministry of Education (CMOE)
  7. Ministry of Science and Technology of China (MSTC)
  8. Ministry of Education and Youth of the Czech Republic
  9. Danish Natural Science Research Council
  10. Carlsberg Foundation
  11. Danish National Research Foundation
  12. European Research Council under the European Community
  13. Helsinki Institute of Physics
  14. Academy of Finland
  15. French CNRS-IN2P3
  16. Region Pays de Loire
  17. Region Alsace
  18. Region Auvergne
  19. CEA, France
  20. German BMBF
  21. Helmholtz Association
  22. General Secretariat for Research and Technology, Ministry of Development, Greece
  23. Hungarian OTKA
  24. National Office for Research and Technology (NKTH)
  25. Department of Atomic Energy and Department of Science and Technology of the Government of India
  26. Istituto Nazionale di Fisica Nucleare (INFN) of Italy
  27. MEXT
  28. Joint Institute for Nuclear Research, Dubna
  29. National Research Foundation of Korea (NRF)
  30. CONACYT
  31. DGAPA, Mexico
  32. ALFA-EC
  33. HELEN Program (High-Energy physics Latin-American-European Network)
  34. Stichting voor Fundamenteel Onderzoek der Materie (FOM)
  35. Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands
  36. Research Council of Norway (NFR)
  37. Polish Ministry of Science and Higher Education
  38. National Authority for Scientific Research - NASR (Autoritatea Nationala pentru Cercetare Stiintifica - ANCS)
  39. Federal Agency of Science of the Ministry of Education and Science of Russian Federation
  40. International Science and Technology Center
  41. Russian Academy of Sciences
  42. Russian Federal Agency of Atomic Energy
  43. Russian Federal Agency for Science and Innovations
  44. CERN-INTAS
  45. Ministry of Education of Slovakia
  46. Department of Science and Technology, South Africa
  47. CIEMAT
  48. EELA
  49. Ministerio de Educacion y Ciencia of Spain
  50. Xunta de Galicia (Conselleria de Educacion)
  51. CEADEN
  52. Cubaenergia, Cuba
  53. IAEA (International Atomic Energy Agency)
  54. Swedish Research Council (VR)
  55. Knut AMP
  56. Alice Wallenberg Foundation (KAW)
  57. Ukraine Ministry of Education and Science
  58. United Kingdom Science and Technology Facilities Council (STFC)
  59. United States Department of Energy
  60. United States National Science Foundation
  61. State of Texas
  62. State of Ohio
  63. STFC [ST/I003398/1, ST/J000140/1, ST/G008833/1, ST/J000108/1] Funding Source: UKRI
  64. Science and Technology Facilities Council [ST/I003398/1, ST/J000108/1, ST/G008833/1, GRIDPP, ST/J000140/1] Funding Source: researchfish
  65. Direct For Mathematical & Physical Scien
  66. Division Of Physics [0969966, 0968903] Funding Source: National Science Foundation
  67. Grants-in-Aid for Scientific Research [20224014, 23340074] Funding Source: KAKEN

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The production of the prompt charm mesons D-0, D+, D*(+), and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at the LHC, at a centre-of-mass energy root s(NN) = 2.76 TeV per nucleon-nucleon collision. The p(t)-differential production yields in the range 2 < p(t) < 16 GeV/c at central rapidity, vertical bar y vertical bar < 0.5, were used to calculate the nuclear modification factor R-AA with respect to a proton-proton reference obtained from the cross section measured at root s = 7 TeV and scaled to root s = 2.76 TeV. For the three meson species, R-AA shows a suppression by a factor 3-4, for transverse momenta larger than 5 GeV/c in the 20% most central collisions. The suppression is reduced for peripheral collisions.

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