QCD, Tevatron results and LHC prospects

TL;DR

This paper summarizes recent QCD measurements from Tevatron experiments, highlighting precision results on jet production, photon processes, and the upcoming LHC experiments, emphasizing the progress and future prospects in high-energy particle physics.

Contribution

It provides the most recent Tevatron QCD measurements with improved precision and discusses the transition to LHC experiments for future discoveries.

Findings

Good agreement with pQCD for jet production

Extended measurements to forward rapidity regions

Need for improved theory for photon+jets processes

Abstract

We present a summary of the most recent measurements relevant to Quantum Chromodynamics (QCD) delivered by the D0 and CDF Tevatron experiments by May 2008. CDF and D0 are moving toward precision measurements of QCD based on data samples in excess of 1 fb-1. The inclusive jet cross sections have been extended to forward rapidity regions and measured with unprecedented precision following improvements in the jet energy calibration. Results on dijet mass distributions, bbbar dijet production using tracker based triggers, underlying event in dijet and Drell-Yan samples, inclusive photon and diphoton cross sections complete the list of measurements included in this paper. Good agreement with pQCD within errors is observed for jet production measurements. An improved and consistent theoretical description is needed for photon+jets processes. Collisions at the LHC are scheduled for early fall 2008, opening an era of discoveries at the new energy frontier, 5-7 times higher than that of the Tevatron.