4.7 Article

Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at √s=8 TeV

Journal

EUROPEAN PHYSICAL JOURNAL C
Volume 75, Issue 2, Pages -

Publisher

SPRINGER
DOI: 10.1140/epjc/s10052-014-3232-5

Keywords

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Funding

  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. MoER (Estonia)
  19. ERC IUT (Estonia)
  20. ERDF (Estonia)
  21. Academy of Finland (Finland)
  22. MEC (Finland)
  23. HIP (Finland)
  24. CEA (France)
  25. CNRS/IN2P3 (France)
  26. BMBF (Germany)
  27. DFG (Germany)
  28. HGF (Germany)
  29. GSRT (Greece)
  30. OTKA (Hungary)
  31. NIH (Hungary)
  32. DAE (India)
  33. DST (India)
  34. IPM (Iran)
  35. SFI (Ireland)
  36. INFN (Italy)
  37. NRF (Republic of Korea)
  38. WCU (Republic of Korea)
  39. LAS (Lithuania)
  40. MOE (Malaysia)
  41. UM (Malaysia)
  42. CINVESTAV (Mexico)
  43. CONACYT (Mexico)
  44. SEP (Mexico)
  45. UASLP-FAI (Mexico)
  46. MBIE (New Zealand)
  47. PAEC (Pakistan)
  48. MSHE (Poland)
  49. NSC (Poland)
  50. FCT (Portugal)
  51. JINR (Dubna)
  52. MON (Russia)
  53. RosAtom (Russia)
  54. RAS (Russia)
  55. RFBR (Russia)
  56. MESTD (Serbia)
  57. SEIDI (Spain)
  58. CPAN (Spain)
  59. Swiss Funding Agencies (Switzerland)
  60. MST (Taipei)
  61. ThEPCenter (Thailand)
  62. IPST (Thailand)
  63. STAR (Thailand)
  64. NSTDA (Thailand)
  65. TUBITAK (Turkey)
  66. TAEK (Turkey)
  67. NASU (Ukraine)
  68. SFFR (Ukraine)
  69. STFC (United Kingdom)
  70. DOE (USA)
  71. NSF (USA)
  72. Marie-Curie programme
  73. European Research Council
  74. EPLANET (European Union)
  75. Leventis Foundation
  76. A. P. Sloan Foundation
  77. Alexander von Humboldt Foundation
  78. Belgian Federal Science Policy Office
  79. Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
  80. Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
  81. Ministry of Education, Youth and Sports (MEYS) of the Czech Republic
  82. Council of Science and Industrial Research, India
  83. HOMING PLUS programme of Foundation for Polish Science
  84. European Union, Regional Development Fund
  85. Compagnia di San Paolo (Torino)
  86. Consorzio per la Fisica (Trieste)
  87. MIUR (Italy) [20108T4XTM]
  88. Thalis programme
  89. Aristeia programme
  90. EU-ESF
  91. Greek NSRF
  92. National Priorities Research Program by Qatar National Research Fund
  93. STFC [ST/J004901/1, ST/K003542/1, ST/M005356/1, ST/K003844/1, ST/K001604/1, ST/H00081X/2, ST/J005665/1, ST/I505580/1, ST/J50094X/1, ST/I005912/1, ST/L00609X/1, ST/K001639/1, ST/L005603/1, ST/M004775/1] Funding Source: UKRI
  94. Science and Technology Facilities Council [ST/K001604/1, CMS] Funding Source: researchfish
  95. Direct For Mathematical & Physical Scien
  96. Division Of Physics [1120138, 1211067] Funding Source: National Science Foundation
  97. Division Of Physics
  98. Direct For Mathematical & Physical Scien [1205960, 1151640, 1306951, 1314131] Funding Source: National Science Foundation

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The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton-proton collisions at root s = 8 TeV, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 19.7 fb(-1). The electroweak cross section for the lljj final state (with l = e or mu and j representing the quarks produced in the hard interaction) in the kinematic region defined by M-ll > 50 GeV, M-jj > 120 GeV, transverse momentum p(Tj) > 25 GeV, and pseudorapidity vertical bar eta(j)vertical bar < 5, is found to be sigma(EW) (lljj) = 174 +/- 15 (stat) +/- 40 (syst) fb, in agreement with the standard model prediction. The associated jet activity of the selected events is studied, in particular in a signal-enriched region of phase space, and the measurements are found to be in agreement with QCD predictions.

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