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Diffractive Dijet Production at s=630\sqrt{s} = 630 GeV and 1800 GeV at the Fermilab Tevatron

Collaboration
Sep, 2001
9 pages
Published in:
  • Phys.Rev.Lett. 88 (2002) 151802
e-Print:
DOI:
Report number:
  • FERMILAB-PUB-01-299-E
Experiments:
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Abstract: (arXiv)
We report a measurement of the diffractive structure function FjjDF_{jj}^D of the antiproton obtained from a study of dijet events produced in association with a leading antiproton in pˉp\bar pp collisions at s=630\sqrt s=630 GeV at the Fermilab Tevatron. The ratio of FjjDF_{jj}^D at s=630\sqrt s=630 GeV to FjjDF_{jj}^D obtained from a similar measurement at s=1800\sqrt s=1800 GeV is compared with expectations from QCD factorization and with theoretical predictions. We also report a measurement of the ξ\xi (xx-Pomeron) and β\beta (xx of parton in Pomeron) dependence of FjjDF_{jj}^D at s=1800\sqrt s=1800 GeV. In the region 0.035<ξ<0.0950.035<\xi<0.095, ∣t∣<1|t|<1 GeV2^2 and β<0.5\beta<0.5, FjjD(β,ξ)F_{jj}^D(\beta,\xi) is found to be of the form β−1.0±0.1ξ−0.9±0.1\beta^{-1.0\pm 0.1} \xi^{-0.9\pm 0.1}, which obeys β\beta-ξ\xi factorization.
Note:
  • LaTeX, 9 pages, Submitted to Phys. Rev. Letters
  • anti-p p: colliding beams
  • anti-p p: inclusive reaction
  • jet: pair production
  • anti-p: structure function
  • diffraction: structure function
  • energy dependence
  • quantum chromodynamics: factorization
  • momentum spectrum: pomeron
  • pomeron: structure function
  • momentum spectrum: parton