Karapınar, GülerKarapınar, Güler01. Izmir Institute of Technology2021-01-242021-01-2420140031-90071079-7114https://doi.org/10.1103/PhysRevLett.112.171801https://hdl.handle.net/11147/10626PubMed: 24836237A search for the production of heavy partners of the top quark with charge 5/3 is performed in events with a pair of same-sign leptons. The data sample corresponds to an integrated luminosity of 19.5 fb(-1) and was collected at root s = 8 TeV by the CMS experiment. No significant excess is observed in the data above the expected background, and the existence of top-quark partners with masses below 800 GeV is excluded at a 95% confidence level, assuming they decay exclusively to tW. This is the first limit on these particles from the LHC, and it is significantly more restrictive than previous limits.eninfo:eu-repo/semantics/openAccessArticle10.1103/PhysRevLett.112.171801Top10%