Search for new physics in events with same-sign dileptons and jets in pp collisions at s√ = 8 TeV

CMS Collaboration, Freya Blekman, Stijn Blyweert, Natalie Heracleous, Jorgen D'Hondt, Alexis Kalogeropoulos, James Keaveney, Tae Jeong Kim, Steven Lowette, Michael Maes, Annik Olbrechts, Derek Strom, Stefaan Tavernier, Walter Van Doninck, Petra Van Mulders, Gerrit Van Onsem, Ilaria Villella

Research output: Contribution to journalArticle

8 Citations (Scopus)


A search for new physics is performed based on events with jets and a pair of isolated, same-sign leptons. The results are obtained using a sample of proton-proton collision data collected by the CMS experiment at a centre-of-mass energy of 8 TeV at the LHC, corresponding to an integrated luminosity of 19.5 inverse femtobarns. In order to be sensitive to a wide variety of possible signals beyond the standard model, multiple search regions defined by the missing transverse energy, the hadronic energy, the number of jets and b-quark jets, and the transverse momenta of the leptons in the events are considered. No excess above the standard model background expectation is observed and constraints are set on a number of models for new physics, as well as on the same-sign top-quark pair and quadruple-top-quark production cross sections. Information on event selection efficiencies is also provided, so that the results can be used to confront an even broader class of new physics models.
Original languageEnglish
Article number14
Pages (from-to)1-18
Number of pages19
JournalThe Journal of high energy physics
Issue number1
Publication statusPublished - 7 Jan 2015


  • Supersymmetry
  • Hadron-Hadron Scattering


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