Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in √s=7 TeV pp collisions at the LHC
ATLAS Collaboration (Including: Farrington, Sinead). (2011) Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in √s=7 TeV pp collisions at the LHC. Physical Review Letters, Vol.106 (No.25). p. 251801. ISSN 0031-9007
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.106.251801
This Letter presents the first search for a heavy particle decaying into an e±μ∓ final state in √s=7 TeV pp collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35 pb-1. No excess above the standard model background expectation is observed. Exclusions at 95% confidence level are placed on two representative models. In an R-parity violating supersymmetric model, tau sneutrinos with a mass below 0.75 TeV are excluded, assuming all R-parity violating couplings are zero except λ311′=0.11 and λ312=0.07. In a lepton flavor violating model, a Z′-like vector boson with masses of 0.70–1.00 TeV and corresponding cross sections times branching ratios of 0.175–0.183 pb is excluded. These results extend to higher mass R-parity violating sneutrinos and lepton flavor violating Z’s than previous constraints from the Tevatron.
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