Search for Displaced Supersymmetry in Events with an Electron and a Muon with Large Impact Parametersopen access
- Authors
- Khachatryan, V; Sirunyan, AM; Tumasyan, A; Adam, W; Bergauer, T; Dragicevic, M; Eroe, J; Fruhwirth, R; Ghete, VM; Kim, Tae Jeong
- Issue Date
- Feb-2015
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.114, no.6, pp.1 - 15
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 114
- Number
- 6
- Start Page
- 1
- End Page
- 15
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/143243
- DOI
- 10.1103/PhysRevLett.114.061801
- ISSN
- 0031-9007
- Abstract
- A search for new long-lived particles decaying to leptons is presented using proton-proton collisions produced by the LHC at root s = 8 TeV. Data used for the analysis were collected by the CMS detector and correspond to an integrated luminosity of 19.7 fb(-1). Events are selected with an electron and muon with opposite charges that both have transverse impact parameter values between 0.02 and 2 cm. The search has been designed to be sensitive to a wide range of models with nonprompt 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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