Searches for New Physics using Dijet Angular Distributions in proton-proton collisions at $\sqrt{s} = 7 TeV $collected with the ATLAS Detector

Angular distributions of jet pairs (dijets) produced in proton-proton collisions at a centre-ofmass energy ps = 7 TeV have been studied with the ATLAS detector at the Large Hadron Collider using the full 2011 data set with an integrated luminosity of $4.8 fb^{-1}$, and reaching dijet masses up to 4:5 TeV. All angular distributions are consistent with QCD predictions. Analysis of the dijet angular distribution, using a novel technique simultaneously employing the dijet mass, is employed. This analysis is sensitive to both resonant new physics and phenomena with a slow-onset in mass. Using this technique, new exclusion limits have been set at 95% credibility level for several hypotheses of physics beyond the standard model including: quantum gravity scales, with 6 extra dimensions, below 4.11 TeV, quark contact interactions below a compositeness scale of 7.6 TeV, and excited quarks with a mass below 2.75 TeV. In a large and complex scientic experiment, such as ATLAS, the collection, management and usability of coherent data and metadata is a challenging operation. The availability of these data to physicists within the experiment is essential to all analysis eorts. A new web-based interface called RunBrowser", which makes ATLAS and LHC operations data available to the ATLAS Collaboration, is introduced.