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Search for "Displaced Supersymmetry" in events with an electron and a muon with large impact parameters

Abstract : A search for new long-lived particles decaying to leptons is presented using proton-proton collisions produced by the LHC at sqrt(s) = 8 TeV. Data used for the analysis were collected by the CMS detector and correspond to an integrated luminosity of 19.7 inverse femtobarns. Events are selected with an electron and a muon that have transverse impact parameter values between 0.02 cm and 2 cm. The search has been designed to be sensitive to a wide range of models with non-prompt e-mu final states. Limits are set on the "displaced supersymmetry" model, with pair production of top squarks decaying into an e-mu final state via R-parity violating interactions. The results are the most restrictive to date on this model, with the most stringent limit being obtained for a top squark lifetime corresponding to c tau = 2 cm, excluding masses below 790 GeV at 95% confidence level.
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http://hal.in2p3.fr/in2p3-01065524
Contributor : Dominique Girod <>
Submitted on : Thursday, September 18, 2014 - 11:25:02 AM
Last modification on : Wednesday, November 25, 2020 - 4:10:43 PM

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V. Khachatryan, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, et al.. Search for "Displaced Supersymmetry" in events with an electron and a muon with large impact parameters. Physical Review Letters, American Physical Society, 2015, 114 (6), pp.061801. ⟨10.1103/PhysRevLett.114.061801⟩. ⟨in2p3-01065524⟩

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