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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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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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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ATLAS Collaboration; Mitsou, Vasiliki; Ferrer Soria, Antonio Perfil; Valls Ferrer, Juan Antonio; Castillo Giménez, María Victoria Perfil; Cabrera Urbán, Susana Perfil; Fuster Verdú, Juan A. Perfil; Fiorini, Luca; Ros Martínez, Eduardo; Hernández Jiménez, Yesenia; Lacasta Llácer, Carlos; Higón Rodríguez, Emilio Perfil; Salt Cairols, José Perfil; González de la Hoz, Santiago; García García, Carmen Perfil; Martí García, Salvador; Villaplana Pérez, Miguel; Lacuesta Miquel, Vicente
Aquest document és un/a article, creat/da en: 2011

Este documento está disponible también en : http://dx.doi.org/10.1103/PhysRevLett.106.251801
This Letter presents the first search for a heavy particle decaying into an e\mu 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. 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 single coupling dominance and the couplings lambda'_{311}=0.11, lambda_{312}=0.07. In a lepton flavor violating model, a Z'-like vector boson with masses of 0.70 to 1.00 TeV and corresponding cross sections times branching ratios of 0.175 to 0.183 pb is excluded. These results extend to higher mass RPV sneutrinos and LFV Z's than previous constraints from the Tevatron.

    ATLAS Collaboration Mitsou, Vasiliki Ferrer Soria, Antonio Valls Ferrer, Juan Antonio Castillo Giménez, María Victoria Cabrera Urbán, Susana Fuster Verdú, Juan A. Fiorini, Luca Ros Martínez, Eduardo Hernández Jiménez, Yesenia Lacasta Llácer, Carlos Higón Rodríguez, Emilio Salt Cairols, José González de la Hoz, Santiago García García, Carmen Martí García, Salvador Villaplana Pérez, Miguel Lacuesta Miquel, Vicente 2011 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 Physical Review Letters 106 25-251801 1 18
http://dx.doi.org/10.1103/PhysRevLett.106.251801
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