Probing BFKL Dynamics in the Dijet Cross Section at Large Rapidity Intervals in ppbar Collisions at sqrts=1800 and 630 GeV
D0 Collaboration, B. Abbott
Abstract
Inclusive dijet production at large pseudorapidity intervals (deltaeta) between the two jets has been suggested as a regime for observing BFKL dynamics. We have measured the dijet cross section for large deltaeta in ppbar collisions at sqrts=1800 and 630 GeV using the DO detector. The partonic cross section increases strongly with the size of deltaeta. The observed growth is even stronger than expected on the basis of BFKL resummation in the leading logarithmic approximation. The growth of the partonic cross section can be accommodated with an effective BFKL intercept of aBFKL(20GeV)=1.65+/-0.07.
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