Search for a Heavy Particle Decaying into an Electron and a Muon with the ATLAS Detector in sqrt s =7 TeV pp collisions at the LHC.
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Abstract | :
This Letter presents the first search for a heavy particle decaying into an e^{±}μ^{∓} final state in sqrt[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 λ_{311}^{'}=0.11 and λ_{312}=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. |
Year of Publication | :
1969
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Journal | :
Physical review letters
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Volume | :
106
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Issue | :
25
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Number of Pages | :
251801
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Date Published | :
2011 Jun 24
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ISSN Number | :
0031-9007
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URL | :
http://link.aps.org/abstract/PRL/v106/p251801
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Short Title | :
Search for a Heavy Particle Decaying into an Electron and a Muon
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