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Search for Dilepton Resonances in pp Collisions at √s=7  TeV with the ATLAS Detector

Author(s)
Taylor, Frank E.
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Abstract
This Letter reports on a search for narrow high-mass resonances decaying into dilepton final states. The data were recorded by the ATLAS experiment in pp collisions at √s=7  TeV at the Large Hadron Collider and correspond to a total integrated luminosity of 1.08 (1.21)  fb[superscript -1] in the e[superscript +]e[superscript -] (μ[superscript +]μ[superscript -]) channel. No statistically significant excess above the standard model expectation is observed and upper limits are set at the 95% C.L. on the cross section times branching fraction of Z′ resonances and Randall-Sundrum gravitons decaying into dileptons as a function of the resonance mass. A lower mass limit of 1.83 TeV on the sequential standard model Z′ boson is set. A Randall-Sundrum graviton with coupling k/M̅ [subscript Pl]=0.1 is excluded at 95% C.L. for masses below 1.63 TeV.
Date issued
2011-12
URI
http://hdl.handle.net/1721.1/71530
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
G. Aad et al. "Search for Dilepton Resonances in pp Collisions at √s=7  TeV with the ATLAS Detector" Physical Review Letters 107, 272002 (2011). © 2011 CERN, for the ATLAS Collaboration
Version: Final published version
ISSN
0031-9007
1079-7114

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