Search for a heavy narrow resonance decaying to eµ, eτ , or µτ with the ATLAS detector in √s = 7 TeV pp collisions at the LHC

Aad, G. and Abajyan, T. and Abbott, B. and Abdallah, J. and Khalek, S. A. and Abdelalim, A. A. and Abdinov, O. and Aben, R. and Abi, B. and Abolins, M. and Abi, B. and Abolins, M. and AbouZeid, O. S. and Abramowicz, H. and Abreu, H. and Acharya, B. S. and Adamczyk, L. and Adams, D. L. and Addy, T. N. and Adelman, J. and Adomeit, S. and Adragna, P. and Adye, T. and Aefsky, S. and Aguilar-Saavedra, J. A. and Agustoni, M. and Ahlen, S. P. and Ahles, F. and Ahmad, A. and Ahsan, M. and Krasznahorkay, Attila and Nagai, Yoshikazu and Pásztor, Gabriella and Tóth, József (2013) Search for a heavy narrow resonance decaying to eµ, eτ , or µτ with the ATLAS detector in √s = 7 TeV pp collisions at the LHC. PHYSICS LETTERS B, 723 (1-3). pp. 15-32. ISSN 0370-2693

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Abstract

This letter presents the results of a search for a heavy particle decaying into an e ±µ ∓, e ±τ ∓, or µ ±τ ∓ final state in pp collisions at √ s = 7 TeV. The data were recorded with the ATLAS detector at the LHC during 2011 and correspond to an integrated luminosity of 4.6 fb−1 . No significant excess above the Standard Model expectation is observed, and exclusions at 95% confidence level are placed on the cross section times branching ratio for the production of an R-parity-violating supersymmetric tau sneutrino. These results considerably extend constraints from Tevatron experiments.

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