4.7 Article

Measurement of W+W- production and search for the Higgs boson in pp collisions at √s=7 TeV

Journal

PHYSICS LETTERS B
Volume 699, Issue 1-2, Pages 25-47

Publisher

ELSEVIER
DOI: 10.1016/j.physletb.2011.03.056

Keywords

CMS; Physics; Software; Computing

Funding

  1. FMSR (Austria)
  2. FNRS (Belgium)
  3. FWO (Belgium)
  4. CNPq (Brazil)
  5. CAPES (Brazil)
  6. FAPERJ (Brazil)
  7. FAPESP (Brazil)
  8. MES (Bulgaria)
  9. CERN (China)
  10. CAS (China)
  11. MoST (China)
  12. NSFC (China)
  13. COLCIENCIAS (Colombia)
  14. MSES (Croatia)
  15. RPF (Cyprus)
  16. Academy of Sciences (Estonia)
  17. NICPB (Estonia)
  18. Academy of Finland (Finland)
  19. ME (Finland)
  20. HIP (Finland)
  21. CEA (France)
  22. CNRS/IN2P3 (France)
  23. BMBF (Germany)
  24. DFG (Germany)
  25. HGF (Germany)
  26. GSRT (Greece)
  27. OTKA (Hungary)
  28. NKTH (Hungary)
  29. DAE (India)
  30. DST (India)
  31. IPM (Iran)
  32. SFI (Ireland)
  33. INFN (Italy)
  34. NRF (Korea)
  35. WCU (Korea)
  36. LAS (Lithuania)
  37. CINVESTAV (Mexico)
  38. CONACYT (Mexico)
  39. SEP (Mexico)
  40. UASLP-FAI (Mexico)
  41. PAEC (Pakistan)
  42. SCSR (Poland)
  43. FCT (Portugal)
  44. JINR (Armenia)
  45. JINR (Georgia)
  46. JINR (Ukraine)
  47. JINR (Uzbekistan)
  48. MST (Russia)
  49. MAE (Russia)
  50. MSTD (Serbia)
  51. MICINN (Spain)
  52. CPAN (Spain)
  53. Swiss Funding Agencies (Switzerland)
  54. NSC (Taipei)
  55. TUBITAK (Turkey)
  56. TAEK (Turkey)
  57. STFC (United Kingdom)
  58. DOE (USA)
  59. NSF (USA)
  60. Marie-Curie programme
  61. European Research Council (European Union)
  62. Leventis Foundation
  63. A.P. Sloan Foundation
  64. Alexander von Humboldt Foundation
  65. Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy)
  66. Belgian Federal Science Policy Office
  67. Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
  68. Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
  69. STFC [ST/G502347/1, ST/F006748/1, ST/I000410/1, ST/I005912/1, ST/F007094/1, ST/I002200/1, ST/I505572/1, ST/H00081X/2] Funding Source: UKRI
  70. Science and Technology Facilities Council [ST/F007094/1, ST/I005912/1, GRIDPP, ST/G502347/1, CMS, ST/F006748/1, PP/D004284/1, ST/I002200/1, ST/I005912/1 GRIDPP, ST/I505572/1, ST/I000410/1] Funding Source: researchfish
  71. Direct For Mathematical & Physical Scien
  72. Division Of Physics [0802184] Funding Source: National Science Foundation
  73. Direct For Mathematical & Physical Scien
  74. Division Of Physics [1314131] Funding Source: National Science Foundation

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A measurement of W+W- production in pp collisions at root s = 7 TeV and a search for the Higgs boson are reported. The W+W- candidates are selected in events with two leptons, either electrons or muons. The measurement is performed using LHC data recorded with the CMS detector, corresponding to an integrated luminosity of 36 pb(-1). The pp -> W+W- cross section is measured to be 41.1 +/- 15.3 (stat) +/- 5.8 (syst) +/- 4.5 (lumi) ph. consistent with the standard model prediction. Limits on WW gamma and WWZ anomalous triple gauge couplings are set. The search for the standard model Higgs boson in the W+W- decay mode does not reveal any evidence of excess above backgrounds. Limits are set on the production of the Higgs boson in the context of the standard model and in the presence of a sequential fourth family of fermions with high masses. In the latter context, a Higgs boson with mass between 144 and 207 GeV/c(2) is ruled out at 95% confidence level. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.

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