Probing BFKL dynamics in the dijet cross section at large rapidity intervals in $p\bar{p}$ collisions at $\sqrt{s} = 1800$ GeV and 630-GeV

Inclusive dijet production at large pseudorapidity intervals (delta_eta) between the two jets has been suggested as a regime for observing BFKL dynamics. We have measured the dijet cross section for large delta_eta in ppbar collisions at sqrt{s}=1800 and 630 GeV using the DO detector. The partonic cross section increases strongly with the size of delta_eta. 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 a_{BFKL}(20GeV)=1.65+/-0.07.

Note:

Published in Physical Review Letters Report-no: Fermilab-Pub-99/363-E Journal-ref: Phys.Rev.Lett. 84 (2000) 5722-5727

D0
anti-p p: colliding beams
anti-p p: inclusive reaction
jet: hadroproduction
jet: pair production
channel cross section
rapidity: gap
Lipatov equation
leading logarithm approximation
DZERO

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Probing BFKL dynamics in the dijet cross section at large rapidity intervals in ppˉp\bar{p}ppˉ​ collisions at s=1800\sqrt{s} = 1800s​=1800 GeV and 630-GeV

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Probing BFKL dynamics in the dijet cross section at large rapidity intervals in $p\bar{p}$ collisions at $\sqrt{s} = 1800$ GeV and 630-GeV