Searches For Light And Heavy Flavor Three Jet Resonances In Proton Proton Collisions With The Cms Detector At Sqrts
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Searches for Light- and Heavy-flavor Three-jet Resonances in Proton-proton Collisions with the CMS Detector at $\sqrt{s}$
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Total Pages | : 173 |
Release | : 2014 |
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Download Searches for Light- and Heavy-flavor Three-jet Resonances in Proton-proton Collisions with the CMS Detector at $\sqrt{s}$ Book in PDF, Epub and Kindle
A search for three-jet hadronic resonance production in proton-proton collisions at 8 TeV center-of-mass energy has been conducted by the CMS Collaboration at the LHC. The data set corresponds to an integrated luminosity of 19.4 fb-1. The search method is modelindependent. Events are selected that contain a large number of jets with high transverse momentum. An ensemble of jets is used to extract a new possible signal from copious QCD background. Event selection is optimized using a benchmark model where supersymmetric gluinos are pair-produced and each of the gluinos decays exclusively into three jets. Two scenarios of this decay are considered denoted by the RPV couplings [lambda]'' 112 and [lambda]'' 113 or [lambda]'' 223. The first coupling allows for gluinos to decay into only light-flavor jets, while the latter two allow decays into one heavy-flavor and two light-flavor jets. No significant deviation is found between the selected events and the expected standard model multijet and t$\bar{t}$ background. For gluinos decaying through 00 112, masses below 650 GeV are excluded at the 95% confidence level. The search including heavy-flavor jets in the final state with the couplings [lambda]'' 113 or [lambda]'' 223 is the first of its kind. Gluinos decaying into one heavy-flavor and two light-flavor jets are excluded for masses between 200 and 835 GeV.
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