Abstract
Results are presented of a search for the production of new particles decaying to pairs of partons (quarks, antiquarks, or gluons), in the dijet mass spectrum in proton-proton collisions at sqrt(s) = 8 TeV. The data sample corresponds to an integrated luminosity of 4.0 inverse femtobarns, collected with the CMS detector at the LHC in 2012. No significant evidence for narrow resonance production is observed. Upper limits are set at the 95% confidence level on the production cross section of hypothetical new particles decaying to quark-quark, quark-gluon, or gluon-gluon final states. These limits are then translated into lower limits on the masses of new resonances in specific scenarios of physics beyond the standard model. The limits reach up to 4.8 TeV, depending on the model, and extend previous exclusions from similar searches performed at lower collision energies. For the first time mass limits are set for the Randall-Sundrum graviton model in the dijet channel.
Highlights
Results are presented of a search, in the for the production dijet mass spectrum of in pnreowtonp-aprrtoictolenscdoellcisaiyoinnsgattoppffisffia1⁄4irs8oTf epVa.rtTohnes data sample corresponds to an integrated luminosity of 4:0 fbÀ1, collected with the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC) in 2012
Results are presented of a search, in the for the production dijet mass spectrum of in pnreowtonp-aprrtoictolenscdoellcisaiyoinnsgattoppffisffia1⁄4irs8oTf epVa.rtTohnes data sample corresponds to an integrated luminosity of 4:0 fbÀ1, collected with the CMS detector at the LHC in 2012
Upper limits are set at the 95% confidence level on the production cross section of hypothetical new particles decaying to quarkquark, quark-gluon, or gluon-gluon final states
Summary
The dijet mass spectrum from wide jets (points) compared with a smooth fitted curve (solid line) and with the predicted QCD background [28] (dashed line). We use the dijet previous searches [3,6,7,35] to describe both data and mass spectrum from wide jets, the background parametri-. The bottom part determined for each process (denoted qq, qg, gg) of the figure shows the difference between the data and the because of the dependence of the signal line shape on the fit value, normalized to the statistical uncertainty in the final state, induced by the different amount of FSR for data. Assuming a pure qq" final state, the largest upward gluons and quarks
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