Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1996-03-27
Phys.Rev.Lett.77:595-600,1996
Physics
High Energy Physics
High Energy Physics - Experiment
6 pages with 4 figures, all uuencoded and gzipped
Scientific paper
10.1103/PhysRevLett.77.595
This study reports the first measurement of the azimuthal decorrelation between jets with pseudorapidity separation up to five units. The data were accumulated using the D{\O}detector during the 1992--1993 collider run of the Fermilab Tevatron at $\sqrt{s}=$ 1.8 TeV. These results are compared to next--to--leading order (NLO) QCD predictions and to two leading--log approximations (LLA) where the leading--log terms are resummed to all orders in $\alpha_{\scriptscriptstyle S}$. The final state jets as predicted by NLO QCD show less azimuthal decorrelation than the data. The parton showering LLA Monte Carlo {\small HERWIG} describes the data well; an analytical LLA prediction based on BFKL resummation shows more decorrelation than the data.
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