Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2011-08-31
Phys.Lett.B 708 (2012) 37-54
Physics
High Energy Physics
High Energy Physics - Experiment
7 pages plus author list (20 pages total), 4 figures, 2 tables, submitted to Physics Letters B
Scientific paper
10.1016/j.physletb.2012.01.035
Invariant mass distributions of jet pairs (dijets) produced in LHC proton-proton collisions at a centre-of-mass energy sqrt(s)=7 TeV have been studied using a data set corresponding to an integrated luminosity of 1.0 fb^-1 recorded in 2011 by ATLAS. Dijet masses up to ~4 TeV are observed in the data, and no evidence of resonance production over background is found. Limits are set at 95% CL for several new physics hypotheses: excited quarks are excluded for masses below 2.99 TeV, axigluons are excluded for masses below 3.32 TeV, and colour octet scalar resonances are excluded for masses below 1.92 TeV.
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