Probing Hard Color-Singlet Exchange in ppbar Collisions at root-s=630 GeV and 1800 GeV

Details Probing Hard Color-Singlet Exchange in ppbar Collisions at root-s=630 GeV and 1800 GeV Probing Hard Color-Singlet Exchange in ppbar Collisions at root-s=630 GeV and 1800 GeV

1998-09-16

arxiv.org/abs/hep-ex/9809016v1

Phys.Lett.B440:189-202,1998

Physics

High Energy Physics

High Energy Physics - Experiment

16 pages, 6 figures

Scientific paper

10.1016/S0370-2693(98)01238-6

We present results on dijet production via hard color-singlet exchange in proton-antiproton collisions at root-s = 630 GeV and 1800 GeV using the DZero detector. The fraction of dijet events produced via color-singlet exchange is measured as a function of jet transverse energy, separation in pseudorapidity between the two highest transverse energy jets, and proton-antiproton center-of-mass energy. The results are consistent with a color-singlet fraction that increases with an increasing fraction of quark-initiated processes and inconsistent with two-gluon models for the hard color-singlet.

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