4.8 Article

Observation of Top Quark Production in Proton-Nucleus Collisions

期刊

PHYSICAL REVIEW LETTERS
卷 119, 期 24, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.242001

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资金

  1. BMWFW (Austria)
  2. FWF (Austria)
  3. FNRS (Belgium)
  4. FWO (Belgium)
  5. CNPq (Brazil)
  6. CAPES (Brazil)
  7. FAPERJ (Brazil)
  8. FAPESP (Brazil)
  9. MES (Bulgaria)
  10. CERN
  11. CAS (China)
  12. MoST (China)
  13. NSFC (China)
  14. COLCIENCIAS (Colombia)
  15. MSES (Croatia)
  16. CSF (Croatia)
  17. RPF (Cyprus)
  18. SENESCYT (Ecuador)
  19. MoER (Estonia)
  20. ERC IUT (Estonia)
  21. ERDF (Estonia)
  22. Academy of Finland (Finland)
  23. MEC (Finland)
  24. HIP (Finland)
  25. CEA (France)
  26. CNRS/IN2P3 (France)
  27. BMBF (Germany)
  28. DFG (Germany)
  29. HGF (Germany)
  30. GSRT (Greece)
  31. OTKA (Hungary)
  32. NIH (Hungary)
  33. DAE (India)
  34. DST (India)
  35. IPM (Iran)
  36. SFI (Ireland)
  37. INFN (Italy)
  38. MSIP (Republic of Korea)
  39. NRF (Republic of Korea)
  40. LAS (Lithuania)
  41. MOE (Malaysia)
  42. UM (Malaysia)
  43. BUAP (Mexico)
  44. CINVESTAV (Mexico)
  45. CONACYT (Mexico)
  46. LNS (Mexico)
  47. SEP (Mexico)
  48. UASLP-FAI (Mexico)
  49. MBIE (New Zealand)
  50. PAEC (Pakistan)
  51. MSHE (Poland)
  52. NSC (Poland)
  53. FCT (Portugal)
  54. JINR (Dubna)
  55. MON (Russia)
  56. RosAtom (Russia)
  57. RAS (Russia)
  58. RFBR (Russia)
  59. RAEP (Russia)
  60. MESTD (Serbia)
  61. SEIDI (Spain)
  62. CPAN (Spain)
  63. PCTI (Spain)
  64. FEDER (Spain)
  65. Swiss Funding Agencies (Switzerland)
  66. MST (Taipei)
  67. ThEPCenter (Thailand)
  68. IPST (Thailand)
  69. STAR (Thailand)
  70. NSTDA (Thailand)
  71. TUBITAK (Turkey)
  72. TAEK (Turkey)
  73. NASU (Ukraine)
  74. SFFR (Ukraine)
  75. STFC (United Kingdom)
  76. DOE (USA)
  77. NSF (USA)
  78. State Fund for Fundamental Researches
  79. STFC [1707996, ST/H000925/1, 1708249, PP/E000479/1] Funding Source: UKRI
  80. Science and Technology Facilities Council [PP/E000479/1, GRIDPP, ST/H000925/1, CMS] Funding Source: researchfish
  81. Division Of Physics
  82. Direct For Mathematical & Physical Scien [1506168, 1404281, 1151640] Funding Source: National Science Foundation
  83. Division Of Physics
  84. Direct For Mathematical & Physical Scien [1606321, 1508869, 1506130] Funding Source: National Science Foundation

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The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of root(S)(NN) = 8.16 TeV. The measurement is performed using events with exactly one isolated electron or muon candidate and at least four jets. The data sample corresponds to an integrated luminosity of 174 nb(-1). The significance of the tt signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is sigma(tt) = 45 +/- 8 nb, consistent with predictions from perturbative quantum chromodynamics.

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