Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in √s=7TeV pp collisions at the LHC

Search for a heavy particle decaying into an electron and a muon with the ATLAS detector in √s=7TeV pp collisions at the LHC

This Letter presents the first search for a heavy particle decaying into an e±μss final state in √s=7TeV pp collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35pb-1. No excess above the standard model background expecta...

Full description

Bibliographic Details
Main Authors: Aad, G, Abbott, B, Abdallah, J, Abdelalim, A, Abdesselam, A, Abdinov, O, Abi, B, Abolins, M, Abramowicz, H, Abreu, H, Acerbi, E, Acharya, B, Adams, D, Addy, T, Adelman, J, Aderholz, M, Adomeit, S, Adragna, P, Adye, T, Aefsky, S, Aguilar-Saavedra, J, Aharrouche, M, Ahlen, S, Ahles, F, Ahmad, A
Format: Journal article
Language:English
Published: 2011
Description
Summary:This Letter presents the first search for a heavy particle decaying into an e±μss final state in √s=7TeV pp collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35pb-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. © 2011 American Physical Society.

Similar Items