Search for high mass dilepton resonances in pp collisions at √s=7 TeV with the ATLAS experiment
MetadataShow full item record
CitationAad, G, Abbott, B., Abdallah, J., Abdelalim, A.A., Abdesselam, A., Abdinov, O. ... ATLAS Collaboration. (2011). Search for high mass dilepton resonances in pp collisions at √s=7 TeV with the ATLAS experiment. Physics Letters B: Nuclear, Elementary Particle and High-Energy Physics, 700(3-4), 163-180. http://dx.doi.org/10.1016/j.physletb.2011.04.044
This Letter presents a search for high mass e+e- or μ+μ- resonances in pp collisions at √s=7 TeV at the LHC. The data were recorded by the ATLAS experiment during 2010 and correspond to a total integrated luminosity of ~40 pb-1. No statistically significant excess above the Standard Model expectation is observed in the search region of dilepton invariant mass above 110 GeV. Upper limits at the 95% confidence level are set on the cross section times branching ratio of Z' resonances decaying to dielectrons and dimuons as a function of the resonance mass. A lower mass limit of 1.048 TeV on the Sequential Standard Model Z' boson is derived, as well as mass limits on Z* and E6-motivated Z' models.