4.4 Article

Search for standard model production of four top quarks in the lepton plus jets channel in pp collisions at √S=8 TeV

期刊

JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 11, 页码 -

出版社

SPRINGER
DOI: 10.1007/JHEP11(2014)154

关键词

Hadron-Hadron Scattering; Top physics

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 (Finland)
  16. CSF (Finland)
  17. HIP (Finland)
  18. CEA (France)
  19. CNRS/IN2P3 (France)
  20. BMBF (Germany)
  21. DFG (Germany)
  22. HGF (Germany)
  23. GSRT (Greece)
  24. OTKA (Hungary)
  25. NIH (Hungary)
  26. DAE (India)
  27. DST (India)
  28. IPM (Iran)
  29. SFI (Ireland)
  30. INFN (Italy)
  31. NRF (Republic of Korea)
  32. WCU (Republic of Korea)
  33. LAS (Lithuania)
  34. MOE (Malaysia)
  35. UM (Malaysia)
  36. CINVESTAV (Mexico)
  37. CONACYT (Mexico)
  38. SEP (Mexico)
  39. UASLP-FAI (Mexico)
  40. MBIE (New Zealand)
  41. PAEC (Pakistan)
  42. MSHE (Poland)
  43. NSC (Poland)
  44. FCT (Portugal)
  45. JINR (Dubna)
  46. MON (Russia)
  47. RosAtom (Russia)
  48. RAS (Russia)
  49. RFBR (Russia)
  50. MESTD (Serbia)
  51. SEIDI (Spain)
  52. CPAN (Spain)
  53. Swiss Funding Agencies (Switzerland)
  54. MST (Taipei)
  55. ThEPCenter (Thailand)
  56. IPST (Thailand)
  57. STAR (Thailand)
  58. NSTDA (Thailand)
  59. TUBITAK (Turkey)
  60. TAEK (Turkey)
  61. NASU (Ukraine)
  62. SFFR (Ukraine)
  63. STFC (United Kingdom)
  64. DOE (U.S.A.)
  65. NSF (U.S.A.)
  66. Marie-Curie programme (European Union)
  67. European Research Council (European Union)
  68. EPLANET (European Union)
  69. Leventis Foundation
  70. A. P. Sloan Foundation
  71. Alexander von Humboldt Foundation
  72. Belgian Federal Science Policy Office
  73. Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
  74. Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
  75. Ministry of Education, Youth and Sports (MEYS) of the Czech Republic
  76. Council of Science and Industrial Research, India
  77. HOMING PLUS programme of Foundation for Polish Science, cofinanced from European Union, Regional Development Fund
  78. Compagnia di San Paolo (Torino)
  79. Consorzio per la Fisica (Trieste)
  80. MIUR (Italy) [20108T4XTM]
  81. Thalis and Aristeia programmes cofinanced by EU-ESF
  82. Greek NSRF
  83. National Priorities Research Program by Qatar National Research Fund
  84. STFC [ST/L00609X/1, ST/K001639/1, ST/J50094X/1, ST/I005912/1, ST/I505580/1, ST/H00081X/2, ST/K003844/1, ST/K003542/1, ST/J004901/1, ST/J005665/1] Funding Source: UKRI
  85. Science and Technology Facilities Council [ST/K003542/1, ST/K003844/1, ST/J50094X/1, ST/I005912/1, GRIDPP, ST/K003844/1 GRIDPP, ST/K001639/1, ST/I505580/1, ST/I005912/1 GRIDPP, ST/J004901/1, 1207881, ST/L00609X/1, ST/J005665/1, ST/K001256/1, ST/L00609X/1 GRIDPP] Funding Source: researchfish
  86. Direct For Mathematical & Physical Scien
  87. Division Of Physics [1306951, 1211067, 1151640] Funding Source: National Science Foundation
  88. Direct For Mathematical & Physical Scien
  89. Division Of Physics [1314131, 1120138, 1205960] Funding Source: National Science Foundation

向作者/读者索取更多资源

A search is presented for standard model (SM) production of four top quarks (WO in pp collisions in the lepton + jets channel. The data correspond to an integrated luminosity of 19.6 fb(-1) recorded at a centre-of-mass energy of 8 TeV with the CMS detector at the CERN LHC. The expected cross section for SM t (t) over bart (t) over bar production is sigma(SM)(t ($t) over bart (t) over bar) approximate to 1 fb. A combination of kinematic reconstruction and multivariate techniques is used to distinguish between the small signal and large background. The data are consistent with expectations of the SM, and an upper limit of 32 fb is set at a 95% confidence level on the cross section for producing four top quarks in the SM, where a limit of 32 + 17 fb is expected.

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