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Inclusive Double Pomeron Exchange at the Fermilab Tevatron pˉp\bar{p}p Collider

Collaboration
Nov, 2003
7 pages
Published in:
  • Phys.Rev.Lett. 93 (2004) 141601
e-Print:
DOI:
Report number:
  • FERMILAB-PUB-03-043-E
Experiments:
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Abstract:
We report a study of pˉ+p→pˉ+X+Y\bar p+p\to \bar p+X+Y at s=1800\sqrt s=1800 GeV, where YY is a proton or system of mass-squared MY2≲8M_Y^2\lesssim 8 GeV2^2. In a sample of events with a leading pˉ\bar p of fractional momentum loss 0.035<ξpˉ<0.0950.035<\xi_{\bar p}<0.095 and 4-momentum transfer squared ∣tpˉ∣<1.0|t_{\bar p}|<1.0 GeV2^2, the proton fractional momentum loss ξpX\xi_p^X to the system XX was evaluated from the momenta of the particles comprising XX. In the region ξpX<0.02\xi_p^X<0.02, the ξpX\xi_p^X distribution behaves as ∼1/(ξpX)1.1\sim 1/(\xi_p^X)^{1.1}, as expected for double Pomeron exchange. The fraction of events with ξpX<0.02\xi_p^X<0.02 is found to be 0.194±0.001(stat)±0.012(syst)0.194\pm 0.001 {\rm (stat)}\pm 0.012 {\rm (syst)}.
Note:
  • 7 pages, 3 figures, Submitted to Phys. Rev. Letters
  • 12.40.Nn
  • 11.55.Jy
  • proton-proton interactions
  • renormalisation
  • Pomerons
  • Reggeon field theory
  • exchange models
  • quantum chromodynamics
  • anti-p p: colliding beams
  • anti-p p: inclusive reaction