4.7 Article

Measurement of color flow in t(t)over-bar events from p(p)over-bar collisions at √s=1.96 TeV

Journal

PHYSICAL REVIEW D
Volume 83, Issue 9, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.83.092002

Keywords

-

Funding

  1. DOE
  2. NSF (USA)
  3. CEA
  4. CNRS/IN2P3 (France)
  5. FASI, Rosatom
  6. RFBR (Russia)
  7. CNPq
  8. FAPERJ
  9. FAPESP
  10. FUNDUNESP (Brazil)
  11. DAE
  12. DST (India)
  13. Colciencias (Colombia)
  14. CONACyT (Mexico)
  15. KRF
  16. KOSEF (Korea)
  17. CONICET
  18. UBACyT (Argentina)
  19. FOM (The Netherlands)
  20. STFC
  21. Royal Society (United Kingdom)
  22. MSMT
  23. GACR (Czech Republic)
  24. CRC
  25. NSERC (Canada)
  26. BMBF
  27. DFG (Germany)
  28. SFI (Ireland)
  29. Swedish Research Council (Sweden)
  30. CAS
  31. CNSF (China)
  32. STFC [PP/E000487/1, ST/F00754X/1, ST/H001166/1, ST/F007418/1, ST/H00095X/1, ST/J501074/1, ST/H00095X/2, PP/F000863/1, ST/I505756/1] Funding Source: UKRI
  33. Science and Technology Facilities Council [ST/H001166/1, ST/H00095X/2, PP/E000487/1, ST/J501074/1, ST/H00095X/1, ST/F007418/1, ST/I505756/1, ST/F00754X/1, PP/D004284/1, PP/F000863/1] Funding Source: researchfish

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We present the first measurement of the color representation of the hadronically decaying W boson in t (t) over bar events, from 5.3 fb(-1) of integrated luminosity collected with the D0 experiment. A novel calorimeter-based vectorial variable, jet pull, is used, sensitive to the color-flow structure of the final state. We find that the fraction of uncolored W bosons is 0.56 +/- 0.42(stat + syst), in agreement with the standard model.

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