Recent measurements of jet and multijet production cross sections from p{bar p} collisions recorded with the Collider Detector at Fermilab (CDF) are summarized. First Run II results of the inclusive one jet cross section at (square root)s = 1.96 TeV as well as prospects for future extensions of this measurement are presented. We also studied the properties of three-jet events in Run Ib data at (square root)s = 1.8 TeV. All results are compared to predictions of Quantum Chromodynamics at next-to-leading order perturbation theory.

We present measurements of differential cross sections in inclusive Z/[gamma]* plus jet production in a data sample of 1 fb−1 collected with the D0 detector in proton antiproton collisions at √s = 1.96 TeV. Measured variables include the Z/[gamma]* transverse momentum (p{sub T}{sup Z}) and rapidity (y{sup Z}), the leading jet transverse momentum (p{sub T}{sup jet}) and rapidity (y{sup jet}), as well as various angles of the Z+jet system. We compare the results to different Monte Carlo event generators and next-to-leading order perturbative QCD (NLO pQCD) predictions, with non-perturbative corrections applied.

In this study, a comparison of the differential cross sections for the processes Z/[gamma] * + jets and photon ([gamma])+jets is presented. The measurements are based on data collected with the CMS detector at √s = 8 TeV corresponding to an integrated luminosity of 19.7 fb-1. The differential cross sections and their ratios are presented as functions of pT. The measurements are also shown as functions of the jet multiplicity. Differential cross sections are obtained as functions of the ratio of the Z/[gamma]* pT to the sum of all jet transverse momenta and of the ratio of the Z/[gamma]* pT to the leading jet transverse momentum. The data are corrected for detector effects and are compared to simulations based on several QCD calculations.

Inclusive jet cross-sections have been measured in {bar p}p collisions at (square root)s = 546 and 1,800 GeV, using the CDF detector at the Fermilab Tevatron. The ratio of low E{sub t} (25--75 GeV) jet cross sections vs. E{sub t} has been formed, and the authors have used this as a tool to investigate some implications of the published 1989 CDF ''jet scaling'' results. In particular, results at 1,800 GeV have given no indication of any unsuspected errors in CDF's low E{sub t} jet measurements.