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of any resonant structure. The experimental limits are determined for the σ sig ≡ σ · B · A , where σ is the theoretical new particle production rate, B is probability of its decaying into two jets and A is the kinematic acceptance of the resulting particle jets to have | y | < 1 . 0. The upper limits on σ sig are evaluating using a likelihood function 

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where µ$_{i}$ = n sig i + n QCD i is the predicted number of events in bin i . The QCD dijet background n QCD i is determined using Equation (9) by evaluating L i · ϵ$_{i}$ · Δ m$_{jj}$ · dσ/dm$_{jj}$ | i where Δ m$_{jj}$ , ϵ$_{i}$ , and L $_{i}$, are the bin width, the trigger efficiency and the integrated luminosity for bin i respectively. The expected signal events n sig i is given by σ sig · L i · ϵ$_{i}$ · ( n$_{i}$/n$_{tot}$ ) where ϵ$_{i}$ is the 

