4.7 Article

A measurement of the ratio of the W and Z cross sections with exactly one associated jet in pp collisions at √s=7 TeV with ATLAS

Journal

PHYSICS LETTERS B
Volume 708, Issue 3-5, Pages 221-240

Publisher

ELSEVIER
DOI: 10.1016/j.physletb.2012.01.042

Keywords

W boson; Z boson; Standard Model; Perturbative QCD

Funding

  1. ANPCyT, Argentina
  2. YerPhI, Armenia
  3. ARC, Australia
  4. BMWF, Austria
  5. ANAS, Azerbaijan
  6. SSTC, Belarus
  7. CNPq, Brazil
  8. FAPESP, Brazil
  9. NSERC, Canada
  10. NRC, Canada
  11. CFI, Canada
  12. CERN
  13. CONICYT, Chile
  14. CAS, China
  15. MOST, China
  16. NSFC, China
  17. COLCIENCIAS, Colombia
  18. MSMT CR, Czech Republic
  19. MPO CR, Czech Republic
  20. VSC CR, Czech Republic
  21. DNRF, Denmark
  22. DNSRC, Denmark
  23. Lundbeck Foundation, Denmark
  24. ARTEMIS
  25. IN2P3-CNRS, France
  26. CEA-DSM/IRFU, France
  27. GNAS, Georgia
  28. BMBF, Germany
  29. DFG, Germany
  30. HGF, Germany
  31. MPG, Germany
  32. AvH Foundation, Germany
  33. GSRT, Greece
  34. ISF, Israel
  35. MINERVA, Israel
  36. GIF, Israel
  37. DIP, Israel
  38. Benoziyo Center, Israel
  39. INFN, Italy
  40. MEXT, Japan
  41. JSPS, Japan
  42. CNRST, Morocco
  43. FOM, Netherlands
  44. NWO, Netherlands
  45. RCN, Norway
  46. MNiSW, Poland
  47. FCT, Portugal
  48. GRICES, Portugal
  49. MERYS (MECTS), Romania
  50. MES of Russia
  51. ROSATOM
  52. JINR
  53. MSTD, Serbia
  54. MSSR, Slovakia
  55. ARRS, Slovenia
  56. MVZT, Slovenia
  57. DST/NRF, South Africa
  58. MICINN, Spain
  59. SRC, Sweden
  60. Wallenberg Foundation, Sweden
  61. SER, Switzerland
  62. SNSF, Switzerland
  63. Canton of Bern, Switzerland
  64. Canton of Geneva, Switzerland
  65. NSC, Taiwan
  66. TAEK, Turkey
  67. STFC, United Kingdom
  68. Royal Society, United Kingdom
  69. Leverhulme Trust, United Kingdom
  70. DOE, United States of America
  71. NSF, United States of America
  72. European Union
  73. Russian Federation
  74. Science and Technology Facilities Council [PP/E003699/1, ST/M001431/1, ST/M001512/1, ST/H001026/1, PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/H001093/1, ST/K001361/1, ST/H001069/2, ST/K001337/1, ST/K001264/1 ATLAS, ST/I005803/1 GRIDPP, ST/K001248/1, ST/K001361/1 ATLAS, ST/I003525/1, ST/K001329/1 ATLAS, ST/K001361/1 MINOS/MINOS+, ST/H001026/2, ST/I005803/1, ST/M001474/1, ST/I003142/1, ST/G502320/1, ST/H001093/2, ST/J004944/1, ST/K001418/1, ATLAS, ST/J004928/1 ATLAS Upgrade, ST/K001361/1 LHCb, ST/J002798/1, ST/K001248/1 ATLAS, ST/K001361/1 ATLAS Upgrades, ST/F007337/1, ST/K00073X/1, GRIDPP, PP/E003699/2, ST/L001144/1, ST/I003517/1, PP/E003087/1, ST/J004928/1, ST/I006080/1, ST/K001337/1 ATLAS, ST/I000186/1, ST/J005576/1] Funding Source: researchfish
  75. Direct For Mathematical & Physical Scien
  76. Division Of Physics [1119200] Funding Source: National Science Foundation
  77. STFC [ST/F007337/1, ST/M000753/1, ST/I003142/1, ST/H001026/1, ST/H001093/1, ST/M001431/1, ST/I006080/1, ST/G502320/1, ST/J004928/1, ST/J004944/1, PP/E003699/2, ST/J005576/1, ST/H001069/2, ST/K001361/1, ST/I003525/1, ST/I005803/1, PP/E003087/1, ST/I000186/1, ST/J002798/1, ST/K001329/1, ST/H001093/2, ST/K001248/1, ST/K00073X/1, ST/M001512/1, PP/E003699/1, ST/H001026/2, ST/K001337/1, PP/E000347/1, ST/I003517/1, ST/L001144/1] Funding Source: UKRI
  78. ICREA Funding Source: Custom

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The ratio of production cross sections of the W and Z bosons with exactly one associated jet is presented as a function of jet transverse momentum threshold. The measurement has been designed to maximise cancellation of experimental and theoretical uncertainties, and is reported both within a particle-level kinematic range corresponding to the detector acceptance and as a total cross-section ratio. Results are obtained with the ATLAS detector at the LHC in pp collisions at a centre-of-mass energy of 7 TeV using an integrated luminosity of 33 pb(-1). The results are compared with perturbative leading-order, leading-log, and next-to-leading-order QCD predictions, and are found to agree within experimental and theoretical uncertainties. The ratio is measured for events with a single jet with p(T) > 30 GeV to be 8.73 +/- 0.30(stat) +/- 0.40(syst) in the electron channel, and 8.49 +/- 0.23(stat) +/- 0.33(syst) in the muon channel. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.

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