Search for supersymmetry in final states with charm jets and missing transverse momentum in 13 TeV pp collisions with the ATLAS detector

A search for supersymmetric partners of top quarks decaying as ${\stackrel{˜}{t}}_{1}\to c{\stackrel{˜}{\chi }}_{1}^{0}$ and supersymmetric partners of charm quarks decaying as ${\stackrel{˜}{c}}_{1}\to c{\stackrel{˜}{\chi }}_{1}^{0}$ , where ${\stackrel{˜}{\chi }}_{1}^{0}$ 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 $c{\stackrel{˜}{\chi }}_{1}^{0}$ , top and charm squarks with masses up to 850 GeV are excluded at 95% confidence level for a massless lightest neutralino. For ${m}_{{\stackrel{˜}{t}}_{1},{\stackrel{˜}{c}}_{1}}-{m}_{{\stackrel{˜}{\chi }}_{1}^{0}}$ < 100 GeV, top and charm squark masses up to 500 GeV are excluded.