Abstract
This Letter presents a search for resonances in of LHC proton-proton collision data collected by the ATLAS detector at a center-of-mass energy of 7 TeV. Events with a lepton, missing transverse momentum, and two jets are selected and the invariant mass of the corresponding final state is reconstructed. The search exploits the shape of the invariant mass distribution compared to the expected standard model backgrounds. The model of a right-handed with standard model-like couplings is chosen as the benchmark model for this search. No statistically significant excess of events is observed in the data, and upper limits on the cross section times the branching ratio of resonances at 95% C.L. lie in the range of 6.1–1.0 pb for masses ranging from 0.5 to 2.0 TeV. These limits are translated into a lower bound on the allowed right-handed mass, giving at 95% C.L.
- Received 4 May 2012
DOI:https://doi.org/10.1103/PhysRevLett.109.081801
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© 2012 CERN, for the ATLAS Collaboration