ar X iv : h ep - e x / 99 06 02 0 v 1 1 0 Ju n 19 99 1
نویسنده
چکیده
We have made a precise measurement of the inclusive jet cross section at √ s=1800 GeV. The result is based on an integrated luminosity of 92 pb −1 collected at the Fermilab Tevatron pp Collider with the DØ detector. The measurement is reported as a function of jet transverse energy (60 GeV ≤ ET ≤ 500 GeV), and in the pseudo-rapidity intervals |η| ≤ 0.5 and 0.1≤ |η| ≤0.7. A preliminary measurement of the pseudorapidity dependence of inclusive jet production (|η| ≤ 1.5) is also discussed. The results are in good agreement with predictions from next–to–leading order (NLO) quantum chromodynamics (QCD). DØ has also determined the ratio of jet cross sections at √ s=630 GeV and √ s=1800 GeV (|η| ≤ 0.5). This preliminary measurement differs from NLO QCD predictions.
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