TL;DR
This paper reports on measurements of jet production and substructure in proton-proton collisions at 7 TeV at the LHC, comparing data to QCD predictions and exploring new techniques for identifying boosted particles.
Contribution
It presents the first detailed measurements of inclusive and di-jet cross sections at 7 TeV and tests novel jet substructure methods for boosted state identification.
Findings
Measured inclusive and di-jet cross sections agree with NLO QCD predictions.
Tested and validated jet substructure techniques for boosted particle identification.
Provided data for tuning QCD models and improving jet analysis methods.
Abstract
Hard QCD results in proton-proton collisions at sqrt(s) = 7 TeV with jets from data recorded up to the end of 2010 by the CMS and ATLAS experiments at the LHC are reported. Inclusive jet and di-jet cross section measurements as well as observables sensitive to multi-jet activity are shown and compared to simulations based on leading log parton showers as well as NLO QCD predictions. Novel approaches to identify highly boosted massive final states by exploiting the jet substructure are tested on the dominant QCD background.
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