High Mass Resonances at ATLAS

Analyses of high mass resonances at ATLAS and CMS

Several plausible extensions of the Standard Model predict the existence of high mass resonances that can be reconstructed (either fully or partially) in the ATLAS and CMS detectors using leptons, jets and missing transverse energy (/ ET ). We present the results of recent detailed studies of these searches performed by both collaborations, focusing on the potential for discovery and limits set...

Search for high-mass resonances decaying to dimuons at CDF.

We present a search for high-mass neutral resonances using dimuon data corresponding to an integrated luminosity of 2.3 fb(-1) collected in pp[over ] collisions at sqrt[s]=1.96 TeV by the CDF II detector at the Fermilab Tevatron. No significant excess above the standard model expectation is observed in the dimuon invariant-mass spectrum. We set 95% confidence level upper limits on sigmaBR(pp-->...

Search for high mass dilepton resonances in pp collisions at √s=7 TeV with the ATLAS experiment

Vector Boson Scattering at High Mass with ATLAS

In the absence of a light Higgs boson, the mechanism of electroweak symmetry breaking will be best studied in processes of vector boson scattering at high mass. Various models predict resonances in this channel. Scalar and vector resonances have been investigated in the WW , WZ and ZZ channels. The ability of ATLAS to measure the di-boson crosssection over a range of centre-of-mass energies has...

High-mass dimuon resonances in Pb-Pb collisions at 5.5 TeV in CMS

The measurement of the charmonium (J/ψ, ψ′) and bottomonium (Υ, Υ′, Υ′′) resonances and Z boson in nucleus-nucleus collisions provides crucial information on high density QCD matter. The observation of anomalous suppression of J/ψ at the CERN-SPS and RHIC is well established but the clarification of some important questions requires equivalent studies of the Υ family, only possible at LHC energ...