Search for dilepton resonances in pp collisions at √s=7 TeV with the ATLAS detector
ATLAS Collaboration (Including: Farrington, Sinead). (2011) Search for dilepton resonances in pp collisions at √s=7 TeV with the ATLAS detector. Physical Review Letters, Vol.107 (No.27). p. 272002. ISSN 0031-9007
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.107.272002
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-1 in the e+e- (μ+μ-) 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 Pl=0.1 is excluded at 95% C.L. for masses below 1.63 TeV.
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