☆ 4.7 Article

First measurement of the cross section for top-quark pair production in proton-proton collisions at √s=7 TeV

PHYSICS LETTERS B (2011)

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Journal

PHYSICS LETTERS B
Volume 695, Issue 5, Pages 424-443

Publisher

ELSEVIER
DOI: 10.1016/j.physletb.2010.11.058

Keywords

CMS; LHC; Physics; Top quark; Cross section

Categories

Astronomy & Astrophysics Physics, Nuclear Physics, Particles & Fields

Funding

  1. FMSR (Austria)
  2. FNRS
  3. FWO (Belgium)
  4. CNPq
  5. CAPES
  6. FAPERJ
  7. FAPESP (Brazil)
  8. MES (Bulgaria)
  9. CERN
  10. CAS
  11. MoST
  12. NSFC (China)
  13. COLCIENCIAS (Colombia)
  14. MSES (Croatia)
  15. RPF (Cyprus)
  16. Academy of Sciences
  17. NICPB (Estonia)
  18. Academy of Finland
  19. ME
  20. HIP (Finland)
  21. CEA
  22. CNRS/IN2P3 (France)
  23. BMBF
  24. DFG
  25. HGF (Germany)
  26. GSRT (Greece)
  27. OTKA
  28. NKTH (Hungary)
  29. DAE
  30. DST (India)
  31. IPM (Iran)
  32. SFI (Ireland)
  33. INFN (Italy)
  34. NRF
  35. WCU (Korea)
  36. LAS (Lithuania)
  37. CINVESTAV
  38. CONACYT
  39. SEP
  40. UASLP-FAI (Mexico)
  41. PAEC (Pakistan)
  42. SCSR (Poland)
  43. FCT (Portugal)
  44. JINR (Armenia)
  45. JINR (Belarus)
  46. JINR (Georgia)
  47. JINR (Ukraine)
  48. JINR (Uzbekistan)
  49. MST
  50. MAE (Russia)
  51. MSTD (Serbia)
  52. MICINN
  53. CPAN (Spain)
  54. Swiss Funding Agencies (Switzerland)
  55. NSC (Taipei)
  56. TUBITAK
  57. TAEK (Turkey)
  58. STFC (United Kingdom)
  59. DOE
  60. NSF (USA)
  61. STFC [ST/I505572/1, ST/H00081X/2, ST/G502347/1, ST/F006748/1, ST/I000410/1, ST/I005912/1, ST/I002839/1, ST/F007094/1, ST/G502412/1, PP/E002722/1, ST/I002200/1] Funding Source: UKRI
  62. Science and Technology Facilities Council [PP/E002722/1, ST/I000410/1, ST/I505572/1, ST/I002839/1, ST/F007094/1, ST/G502412/1, ST/I005912/1, GRIDPP, ST/G502347/1, ST/F006748/1, PP/D004284/1, ST/I005912/1 GRIDPP, ST/I002200/1] Funding Source: researchfish
  63. Direct For Mathematical & Physical Scien
  64. Division Of Physics [0970024, 0802184] Funding Source: National Science Foundation

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The first measurement of the cross section for top-quark pair production in pp collisions at the Large Hadron Collider at center-of-mass energy root s = 7 TeV has been performed using a data sample corresponding to an integrated luminosity of 3.1 +/- 0.3 pb(-1) recorded by the CMS detector. This result utilizes the final state with two isolated, highly energetic charged leptons, large missing transverse energy, and two or more jets. Backgrounds from Drell-Yan and non-W/Z boson production are estimated from data. Eleven events are observed in the data with 2.1 +/- 1.0 events expected from background. The measured cross section is 194 +/- 72(stat.) +/- 24(syst.) +/- 21(lumi.) pb, consistent with next-to-leading order predictions. (C) 2010 CERN. Published by Elsevier B.V. All rights reserved.

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