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

Details Search for high mass dilepton resonances in pp collisions at sqrt{s}=7 TeV with the ATLAS experiment Search for high mass dilepton resonances in pp collisions at sqrt{s}=7 TeV with the ATLAS experiment

2011-03-31

arxiv.org/abs/1103.6218v1

Phys.Lett.B 700 (2011) 163-180

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages (+12 for author list), 5 figures, 6 tables, submitted to Physics Letter B

Scientific paper

10.1016/j.physletb.2011.04.044

This article presents a search for high mass e e or mu mu resonances in pp collisions at sqrt{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. 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 E(6)-motivated Z' models.

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