Observation of Energetic Jet Production in pp Collisions at sqrt(s) = 7 TeV using the ATLAS Experiment at the LHC

TL;DR

This paper reports the first observation of energetic jet production in proton-proton collisions at 7 TeV using the ATLAS detector, demonstrating the detector's capability to identify high-energy jets and analyzing their properties.

Contribution

First observation of energetic jets at 7 TeV in pp collisions with detailed jet shape and particle flow analysis using ATLAS.

Findings

Jets with pT up to 500 GeV observed

Dijet mass up to 1 TeV measured

Jet shapes confirm collimated particle flows

Abstract

We report the observation of energetic jet production in proton-proton collisions at sqrt(s) = 7 TeV, based on about 1 nb^-1 of integrated luminosity collected by the ATLAS detector. The anti-kT algorithm is used to reconstruct jets with pT > 30 GeV and |y| < 2.8. Jets with pT up to ~500 GeV and events with dijet mass up to ~1 TeV are observed. The jet shapes and charged particle flow confirm that the observed jet signal corresponds to collimated flows of particles in the final state.