ATLAS collaboration (2900 authors)Aguilar Saavedra, Juan AntonioAmor Dos Santos, Susana PatriciaAraque Espinosa, Juan PedroCastro, Nuno FilipeConde Muino, PatriciaDa Cunha Sargedas De Sousa, Mario JoseDias DO Vale, TiagoFiolhais, MiguelGalhardo, BrunoGomes, AgostinhoGoncalo, RicardoJorge, PedroMachado Miguens, JoanaMaio, AmeliaManeira, JoseOleiro Seabra, Luis FilipeOnofre, AntonioCosta Batalha Pedro, RutePereira Peixoto, Ana PaulaSantos, HelenaSaraiva, JoaoSilva, Jose ManuelTavares Delgado, AdemarVeloso, FilipeWolters, Helmut2019-02-052019-02-052018-09-10http://dx.doi.org/10.1007/JHEP09(2018)050http://hdl.handle.net/10400.26/27628A search for supersymmetric partners of top quarks decaying as $ {\tilde{t}}_1\to c{\tilde{\upchi}}_1^0 $ and supersymmetric partners of charm quarks decaying as $ {\tilde{c}}_1\to c{\tilde{\upchi}}_1^0 $ , where $ {\tilde{\upchi}}_1^0 $ is the lightest neutralino, is presented. The search uses 36.1 fb$^{−1}$ pp collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS experiment at the Large Hadron Collider and is performed in final states with jets identified as containing charm hadrons. Assuming a 100% branching ratio to $ c{\tilde{\upchi}}_1^0 $ , top and charm squarks with masses up to 850 GeV are excluded at 95% confidence level for a massless lightest neutralino. For $ {m}_{{\tilde{t}}_1,{\tilde{c}}_1}-{m}_{{\tilde{\upchi}}_1^0} $ < 100 GeV, top and charm squark masses up to 500 GeV are excluded.engjournal article2019-02-05