TY - JOUR AU - ATLAS Collaboration (Aad, G. et al AU - Amoros, G. AU - Cabrera Urban, S. AU - Castillo Gimenez, V. AU - Costa, M. J. AU - Escobar, C. AU - Ferrer, A. AU - Fuster, J. AU - Garcia, C. AU - Gonzalez de la Hoz, S. AU - Hernandez Jimenez, Y. AU - Higon-Rodriguez, E. AU - Irles Quiles, A. AU - Kaci, M. AU - Lacasta, C. AU - Lacuesta, V. R. AU - Marti-Garcia, S. AU - Miñano, M. AU - Mitsou, V. A. AU - Moles-Valls, R. AU - Moreno Llacer, M. AU - Oliver Garcia, E. AU - Perez Garcia-Estañ, M. T. AU - Ros, E. AU - Salt, J. AU - Solans, C. A. AU - Soldevila, U. AU - Sanchez, J. AU - Torro Pastor, E. AU - Valladolid Gallego, E. AU - Valls Ferrer, J. A. AU - Villaplana Perez, M. AU - Vos, M. AU - Wildauer, A. PY - 2011 DA - 2011// TI - 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 T2 - Phys. Rev. Lett. JO - Physical Review Letters SP - 251801 - 18pp VL - 106 IS - 25 PB - Amer Physical Soc AB - This Letter presents the first search for a heavy particle decaying into an e(+/-)mu(-/+) final state in root 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 lambda(311)' = 0.11 and lambda(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. SN - 0031-9007 UR - http://fr.arxiv.org/abs/1103.5559 UR - https://doi.org/10.1103/PhysRevLett.106.251801 DO - 10.1103/PhysRevLett.106.251801 LA - English N1 - ISI:000291942400003 ID - ATLASCollaborationAad_etal2011 ER -